ML19208B296
| ML19208B296 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 11/30/1978 |
| From: | Cottrell D ROSENSTIEL SCHOOL OF MARINE & ATMOSPHERIC SCIENCE |
| To: | |
| Shared Package | |
| ML19208B284 | List: |
| References | |
| NUDOCS 7909190486 | |
| Download: ML19208B296 (98) | |
Text
{{#Wiki_filter:ANALYSIS OF SUSPENDED AND SURFICIAL SEDIMENT IN THE DI V " OGE 3ASINS OF CRYSTAL RIVER POWER GENERATING FACILI~T CRYSTAL RIVER, FLORIDA by Daniel J. Cottrell Rosenstiel School of Marine and Atmospheric Science Miami, Florida Submitted to FLORIDA POWER CORPORATION November, 1978 OO - O O , 3ol
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TABLE OF CONTENTS
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Introduction ............................................ ..... - 1 Materials and Methods ...................................... .- 3 ROSults ..... ... ..... .......... .......................... .. 3 Discussion ...................................................... 12 Conclusions ..................................................... 16 References Cited ................................................ 19 Figures 1 through 34 ............................................ 20 Appendix A Laboratory preparation and procedures ...................... 54 Appendix B Calculated rates of resuspension ........................... 63 Appendix C Regression analysis and t100 para eters ................... 80 Appendix D Grain size analyses for dredge samples ..................... 85 Appendix E Organic matter and carbonate analyses ...................... 91 f
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Introduction Prior to the operation of Crystal River Unit 3, a large-scale study of the ecological ef fects of thermal discharge, plant design and spoil dike placement were assessed. The results of this study were presented in a renort to the Florida Power Corporation in December, 1974. One concern whi:h emerged during this study was the e f fec t of suspended sediment on the benthic communities of the discharge estuary, and the overall effect of man-made structures in changing local hydrographic conditions. With the commencement of operation of Unit 3, the discharge current doubled in magnitude, and may have imposed further change in the local hydrographic conditions. It was thought that this velocity increase may have led to adverse erosional and depositional effects in the estuary . and perhaps out into the Gulf of Mexico. Initial studies by Cottrell (1974) postulated that sediment was being suspended in the shallow estuary and transported into the discharge canal system, where its fate was undetermined. Surface sediment samples reflected the presence of fine material in three basins which communicate with the discharge current. Two of these basins are also in close proximity to the Cross Florida Barge Canal, located to the north of the discharge area (Fig. 1). Preliminary sediment trap studies, performed in the shallower basins, showed that large amounts of sediment were being resuspended in the littoral zone near tidal creeks and marshes, and along the canal-estuary boundary. High altitude aerial photographs of the study area also revealed
" stringers" of apparently resuspended material initiating in the shallowest areas of the littoral zone. The aerial photographs, however, p r, n AMIdJd b
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did not leave any clues as to the direction of movement of the resuspension, nor its duration. These findings led us to believe that the discharge canal could be acting as a " conduit" for resuspended matter, and actively transporting this material into the outer basins where the sediment could be trapped and allowed to settle. Cottrell (1974) noted that a 100% increase in discharge velocities with the addition of Unit 3 could alter the hydrographic regime under which the surface sediment is presently stable. Subsequently, it was proposed thet a study of the surficial and suspended sediment occurring in areas of possible impact would confirm any future impact attributed to readjustment of the sediment to new hydrographic conditions imposed by increased discharge from the addition of Unit 3. This report contains the results of a cooperative study conducted by members.of Florida Power Corporation's Department of Environmental Affairs and the Rosenstiel School of Marine and Atmospheric Science. The study was designed to analyze sediment trap and surficial sediment parameters in order to compare the amount of material resuspended in particular localities with the local character of the sediment substrate, on a seasonal basis. Such a study provides useful information concerning the fate of suspended material in the water column, and can be used in conjunction eith hydrographic studies to assess the impact of the discharge
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It must be stressed that the methods used in this study serve only as a tool for drawing conclusions about sediment dispersal and settling. The conclusions must be used in context with hydrological, biological and meteorological data to fully understand the meaning of this information.
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Materials and Methods Sediment Traps Sixteen sediment traps (Fig. 2a, 2b, and 3) were constructed from 10 cm I.D. PVC pipe, cut into 45 cm lengths. Smaller PVC tubes, 2.5 cm I.D., were inserted into the larger pipe to act as baffles in order to p r n a.:: 12s3 of trapp2d 32di= ant. Tc. 2 ;ip23 were fittad .ith appropriate sized PVC caps. The bottoia cap was cemented to the pipe, while the top cap served only to seal the trap during collection and replacement procedures. Anchors for the traps were constructed of cement slabs, measuring 5 cm in thickness and approximately 50 cm square. Steel eyebolts were also placed in the cement as attachments for marker buoys. Fach anchor had a collar imbedded in the center of the slab. The collars were made from 10 cm pieces of 15 cm I.D. PVC pipe. Three stainless steel bolts were tapped into each collar in order to secure the trap in an upright j,osition. Collection schedules for the traps were carried out on a quarterly basis for ona year. Each quarter sampling consisted of retrieving the contents of the traps at intervals of one day, three days, five days, and eightyone days, when possible. The su=mation of the quantities of sediment in each sample represents the accumulation of material for one day, four days, nine days, and ninety days. The collection schedule was designed to provide data for constructing resuspension curves in order to estimate a maximum, minimum and average resuspension rate for each sample locality on a quarterly and annual basis. All samples were collected by Florida Power Corporation personnel, fixed with 5 mg HgCl2 , and shipped to Miami for subsequent analysis. In the laboratory, the samples were separated into the sand fraction (> 63 p) r s . g ;-)yl b j k kh
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and the silt and clay fraction (< 63 p), and analyzed for dry weight, weight of organic matter and inorganic carbonate, and residual weight (siliceous matter and oxides). The laboratory preparations and procedures for the sediment trap samples are outlined and explained in Appendix A. Substrate Samples Substrate samples were collected at 22 sample stations, including sediment trap localities (Fig. 3). The substrate samples were collected on the first day of each quarter with an aluminum hand-dredge (Fig. 2c) designed to sample the upper 2 cm of the sediment substrate. The samples were then shipped to Miami and analyzed for percent organic matter and inorganic carbonate, sand-silt-clay percentages, particle size distribution, and statistical measures of mean grain size, sorting, skewness, and kurtosis. Laboratory procedures are too lengthy to present in this section. A detailed outline and explanation of these procedures is presented in Appendix A. Resuspension Curves Since the sample collection schedule was designed to monitor the amounts of sediment collected for discrete time periods, a record of the amount of sediment which accumulates over time can be fit to a power curve equation to derive estimates of how much and how fast sediment accumulates. The estimate is for gross sedimentation since the traps are not designed to mimic the natural process of deposition with subsequent resuspension. The general equation: y = ax
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where y= amount of material in g/m x= number of days for the sample a= a coefficient which estimates g/m . day b= a coefficient which is an exponent of time. The data were prepared for the regression by calculating total g/m for each time interval of sampling. These data were then summed to find tae cotal accumulacion ror eaca sampiing interval. For example, g/ m ror one day plus g/m for three days equals total g/m for four days, and so on. It was found, however, that the resuspension data for each individual quarter for each trap had too many missing values, and so, an average accumulation for each time interval was calculated for all four quarters These accumulation c'ata then represent an average annual accumulation or resuspension curve. Since the use of regression coef ficients to express practical meaning is somewhat difficult, a parameter t100, was derived from the regression data. The parameter t expresses the length of time, in hours, it takes 100 each sample locality to accumulate 100 g/m of sediment. Results Resuspension Rates Resuspension is used in this report to refer to a ger.eral process whereby material is suspended in the water column and subsequently comes to rest on the substrate. The occurrence of sudden velocity changes, such as storm events, will resuspend the material once again. The sediment traps capture the resuspended sediment which accumulates during periods of quiescence. Thus, they provide a comparative measure of the resuspension activity occurring in a particular locality.
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The av rage daily resuspension rates were ca' i'eted on a grams per meter square per day basis by multiplying the wcight of the material captured in the traps by a f actor whic'n expands the area of the mouths of the traps to an area of one square meter, and the results are divided by the appropriate number of days for the sample. Appendix b lists the calculated rates for the first, second, third and fourth quarters. Table 1 summarires the average daily resuspension rates for these sampling periods, and Figures 4 through 19 are maps of the distribution of the data listed in Table 1. Some general trends are evident from the data. The one-day samples taken at the beginning of the second quarter show extremely high resuspension occurring in the discharge samples. This was found to be attributed to a small weather system which passed during the sampling period. Meterological records showed sustained winds of 15 to 20 mph, a drop in barometric pressure, and a shif t in w'nd direction from about 280 to 240 . The wind stress :ssociated with this system coupled with an ebbing tide produced the dry weight resuspension rates shown in Figure 20. The distribution of these data indicate the response of the suspended sediments to a small perturbation of the water column. Ninety-day samples for the four quarters show an increase in resuspension rates between the first, second and third quarters. However, the fourth quarter samples indicate a mixture of increasing and decreasing rates. Rates increased for stations B, 3 and 11 only. The ninety-day samples are most likely to provide the best indication of the average resuspension activity, since they tend to average out the ef fects of storms and periods of low water column activity. Resuspens'.on rates in Basin 3 remained at moderately high levels throughout the study, and resuspension rates in Basin 4 were moderate
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First Quarter Sanple dry weight organic matter carbonate siliceous x s.d. x s.d. x s.d. x s.d. STA A 56.8 8.3 20.5 1.9 13.5 4.9 33.4 5.4 STA B 82.5 83.0 16.6 13.7 28.8 33.1 37.2 16.4 STA C 38.2 13.0 8.2 3.4 11.1 4.8 18.9 6.0 STA E 43.1 27.9 10.4 6.0 14.9 9.5 20.7 15.4 STA F 74.1 13.3 12.9 2.9 23.0 4.4 38.2 15.3 STA 2 39.4 7.2 8.8 2.2 11.8 4,5 18.9 3.9 STA 3 73.5 20.9 11.1 5.1 28.0 6.5 34.4 10.0 STA 6 77.2 32.6 14.5 5.8 21.6 13.3 41.1 14.6 STA 9 96.0 42.3 17.8 7.1 34.7 17.6 43.6 19.4 STA 11 199.5 74.1 27.8 12.7 77.7 4v.2 94.0 28.1 STA 13 187.3 92.9 29.3 11.3 78.5 53.6 79.5 31.2 STA 16 83.8 37.7 13.8 9.8 19.1 7.6 50.9 36.3 STA 18 69.5 24.4 14.5 7.2 18.8 6.4 36.1 12.3 STA 20 163.9 143.4 29.6 24.8 60.4 55.2 73.8 63.7 STA 21 152.2 114.6 29.7 19.9 52.5 41.3 70.1 53.9 STA 24 48.1 14.5 9.5 2.7 16.5 6.3 23.2 8.7 Second Quarter STA A 58.9 75.6 14.5 12.3 14.7 13.9 46.4 32.7 STA B 267.4 333.2 53.4 67.2 37.4 109.1 126.8 157.0 STA C 134.8 163.3 29.3 37.4 32.5 33.5 70.7 88.8 STA E 92.4 90.2 18.4 15.4 26.3 29.2 46.9 45.4 STA F 190.1 138.3 37.7 28.0 42.3 32.6 110.0 79.5 STA 2 92.9 103.9 23.8 31.2 27.1 30.7 42.1 42.1 STA 3 308.1 391.4 64.4 87.8 91.9 106.2 151.9 197.7 STA 6 109.6 225.3 47.3 52.5 47.8 48.4 95.5 125.7 STA 9 234.4 189.2 44.9 39.2 80.0 55.0 109.5 95.2 STA 11 208.9 208.4 35.7 38.8 106.4 58.0 124.6 94.9 STA 13 503.7 589.2 82.0 93.7 210.4 256.3 211.2 239.5 STA 16 315.7 293.1 67.7 61.3 86.6 73.6 161.4 153.4 STA 18 233.0 211.0 50.3 45.6 64.5 55.7 118.2 109.8 STA 20 650.5 634.2 131.0 145.0 210.1 166.7 309.4 326.2 STA 21 652.7 501.6 135.7 111.6 200.8 137.9 316.3 252.2 STA 24 452.3 435.9 86.4 75.3 154.7 157.3 211.3 207.3 O 'l / )9
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e TABLE 1. Continueo. Values in g/m day. Third-Quarter O Sample ' dry weight organic matter carbonate ' ~ siliceous x s.d. x s.d. x s.d. x s.d. STA A 138.2 21. 30.8 15.3 26.3 5.1 81.1 14.2 STA B 214.6 42.7 27.4 14.6 37.4 10.2 59.9 23 1 STA C 128.5 19.3 27.7 7.5 28.7 9.0 72.1 8.6 STA E 82.9 12.5 18.9 3.4 21.6 8.1 42.3 4.9 STA F 427.8 225.1 65.7 30.1- 57.7 23.9 284.5 214.6 - STA 2 ,s110.1 24.2 22.8- ; 2[i ^ ' 31.3 11.6 54.0 14.5 STA 3 252.1 27.0 44.8 13.2 89.5 14.1 117.7 18.0 STA 6 189.8 44.0 37.4 17;2 50.0 9.0 102.4 77.4 STA 9 406.4 135.4 59.2 11.5 181.3 72.9 165.9 43.1 SIA 11. '?.11. 9 21.4 49. 0 ', 18.4 123.3 32.6 135.1 7.9
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STA 13 199.8 18.7 33.2 10.1 80.5 7.6 86.2 12.2 STA 16 244.2 71.? 48.9 22.8 68.3- 15.2 126.9 41.1 - STA 18 369.2 184.9 78.3 35.4 121.6 47.1 189.3 105.4 STA 20 586.7 230.2 94.3 24.1 237.3 119.3 e ?.5. 2 87.2 STA 21 536.2 230'.2 94.6 43.3 196.9 69.4 246.8 118.2 STA 24 421.8 257.5, 67.8 30.7 137.2 146.2 170.3 115.7 Fourth Quarter SIA A 119.4 65.6 24.3 13.6 34.8 16.2 60.4 35.9 STA B 156.5 58.0 28.7 11.2 56.8 22.0 71.0 24.9 STA C ns ns nr us' ns ns ns ns
?TA E 44.7 25.5 9.4 4.8 15.8 14.6 19.5 9.1 STA F 163.2 58.8 34.6 11.9 43.2 21.3 85.7 25.6 STA 2 82.9 8.8 17.2 0.4 24.7 6.9 41.1 2.2 I cTr ' 'AQ.1 03.7 64.3 8.3 129.9 90.5 173.9 11.2 si,, > .':~.5 d4.9 57.6 2.3 66.9 58.9 3.44.1 23.6 STA 9 <332.0 128.2 54.7 26.0 143.8 70.2 13344 60.5 STA 11 307.5 139.9 41.6 , 20.2 136.8 59.7 129.0 61.4 STA 13 72.0 44.0 12.1 11.6 26.1 12.3 33.8 21.2 STA 16 196.6 37.3 37.4 12.7 61.7 0.4 97.6 25.0 ~
STA 18 475.2 262.3 39.2 43.1
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during the first quarter, but soared to extremely high values during the second and third quarters and decreased in the fourth quarter. One sample station in Basin 5 (STA 24) experienced over eight times the amount of resuspension for the second and third quarters than during the first quarter, and the rate subsided in the fourth quarter. Figures 21 through 24 show contours of the distribution of c l00
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_ -e, nru ., g , ;it t- ,-. - residue. Appendix C lists the data used to calculats the regression coefficients, as well as the results of the regression and corresponding t 100 ** "*** Each figure displays the same general trend, although the time of accumulation varies for each type of analysis. Organic matter is the slowest to accumulate, while carbonate accumulated almo et twice as hist as organic matter. In each sample, roughly 50% of the sample is composed of siliceous residue (the weight of material lef t after ashing at 1000 C for 4 hours and corrected for the weight of Ca0). The is<pleths show this relationship in comparing Figure 21 with Figure 24. The c l00 Parameter is nearly two times larger for siliceous residue than for dry weight. There appear to be three areas which show a consistent pattern of resuspension, regardless of the particular chemical analysis. Basin 1 always shows a high value associated with Station F and the lowest value at Station A. Basins 2 and 3 share similar responses with moderately high values occurring at sample stations 3, 19, and 11, 13 respectively. Station 13 seems, however, to fit better into the resuspension regime of Basins 4 and 5. These basins (4 and 5) experience the highest, and the most rapid accumulation. Basins 6 and 7, the et,ntrol basins , reflect resuspension and accumulation similar to Basin 1 (neglecting Stacion F) and Basins 2 and 3, respectively.
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Substrate Characteristics Sand-silt-clay percentages were obtained from each sample station for each quarter. The sand fraction was also analyzed for statistical parameters of mean grain size, sorting, skewness and kurtosis. Figures 25 through 28 are maps of the distribution of the < 63 p fraction (% silt + % clay) in the substrate samples for each quarter. There is an evident increase in the percentage of fine grained material in the samples from the first quarter to the second quarter samples. Percentages are nearly the same for the second and third quarters. Fourth quarter samples show a mixture of increases and decreases. In general, increases of more than 5% occurred in the shallower basins (1, 6, 7, and 2a), while decreases occurred in Basin 3. All other stations remained about the same as the second and third quarter samples. This pattern was also observed in the , average daily resuspension rates. Statistical parameters of mean grain size, skewness and kurtosis were calculated for each substrate sample for each quarter. Appendix D lists the results of these analyses. Throughout the course of the project, replicate analyses were run on samples from Stations F and 21. These analyses were intended to provide an estimate of the variability of the substrate from quarter to quarter and, t . . c .g , . m ,i y ,. , ._ _ _ 5 . r eg ,, c.3,. t ;,, d f w- n eh e, e 5% organic matter are confined to Basins 3 aad 4. Calcium carbonate distributions are depicted in Figure 34. High percentages are found in areas where samples are located near the relict oyster bars of Basin 3 and the shell-sand shoals which define the western Limit of Basin 4. In these areas calcium carbonate particles have a cremendous influence on the composition of the substrate, and are produced locally by the attrition of shell material. Discussior. Throughout the course of this study it had been realized that there would be limitations to inferences concerning the sediment traraport and depositional processes occurring at Crystal River. The study was intended to yield data which would be complementary to those found in Cottrell (1974). That is, the emphasis of this study was clearly focused on sediment trap da:a while Cottrell's earlier study emphasized substrate properties. n 1l U
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The experimental design for the sediment trap portion of this study centered around obtaining estimates of how fast, and how much material can accumulate in the specially designed sediment traps. The data would yield discrete amounts for varying time intervals and thus allow the construction of an accumulation curve for each sample from each quarter. The purpose of deriving these curves was for comparison of slopes as an aid in u+ s t am?iv; the m m al behavior of the seU ent fic thrench the discharge estuary. The chemical analyses would also indicate if there were seasonal patterns of detrital organic matter production and transport. Calcium carbonate analyses were intended to indicate whether or not spoil bank and oyster bar erosion were important factors to the sediment supply. It appears that greatest scour occurs in pulses during spring tides and also under high wind stress. One such sedimentation event occurred during the one-day samples of the second quarter (June 6-7, 1977). Figure 20 shows the results of the combined effect of wind stress and an ebbing tide acting along vectors of nearly the same direction. It appears as though the synergistic effect of these two processes transported sediment into deeper, offshore areas (Basins 4 and 5). The quantity of material accumulated increases with increasing distance from shore. Unfortunately, it is not kn7wn if this material was again resuspended and swept back inshore on the next high tide. One could argue that the strength of the discharge current is too great to allow recuspended material to spread toward shore, but this is only an inference and cannot be demonstrated with the data. Grain size parameter data may yield helpful information about the despositirnal environment of the sediment (Folk and Ward, 1957; Mason and Folk, 1958). The parameters are designed to quantitatively describe the r s . . . . , A Us..Wf555 o - (- ^ ] '/
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dhape of the grain size distribution. Each parameter, or moment measure, offers a different piece of information wnich can aid in interpreting the depositional history of a particular sediment. They are, however, only a tool and cannot be used exclusively to draw conclusions concerning depositional environments. Mean grain cize distributions (Figure 29) indicate the presence of finer grained material in Basins 3 and 4. Although smaller grain sizes can be indicative of deposition, this pc.rameter alone cannot demonstrate that deposition is occurring in these areas. Also, deposition could occur in an area where coarse shell material exists, but the shell particlea would mask the ef fects of fine materials in the computation of mean grain size. Sorting is a measurement of the dispersion of grain size about the mean (standard deviation). The values shown in Figure 30 shows that the sediments become somewhat more poorly sorted (grain size varies considerably about the mean) with increasing distance from shore. However, the pattern is very weak, and in general all of these sediments are poorly sorted according to the criteria of Folk and Ward (1957). Skewness and kurtosis are both vital clues to the bimodality of the particle size distribution (Folk and Ward,1957). Valia and Cameron (1977) provide a good discussion of the use of skewness as a sensitive indicator of depositional environments. Folk and Ward (1957) point out that well-sorted sand which is transported , by storms, into the neritic environment where it is mixed with finer particles in a " medium of low sorting efficiency" may be characteristically positively skewed (a " tail" of fine particles) and leptokurtic (very peaked). Figures 31 and 32 show the dieribution of skewness and kurtosis. All values are positively skewed and leptokurtic. The positive skewness can result from addition of fine
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material to the blanket sand deposit laid down during sea level rise. Since the rise in sea level, the depositional environment has become less efficient in sorting the sediment. A low energy environment (low sorting activity) now exists and addition and mixing of fine material to the sand can account for the observed skewness and kurtosis values. There is, however, an area in Basins 3 and 4 which is more positively skewed and coincides with smaller grain sizes (see Figure 31). There is, therefnra, some suggestion that fines are being deposited in these more positively skewed areas. Kurtosis values are sensitive to bimodality and paakedness of the particle size distribution curve. No pattern is evident with kurtosis as it is with skewness. Organic matter is most abundant in Basins 3 and 4 (Figure 33). The percentages are somewhat higher in the same sediments which possess high values of positive skewness. The percent organic matter, skewness, and mean grain size data all suggest that high values of these parameters are associated with areas of moderate to high values of accumulation in the sediment traps in Basins 3 and 4. Calcium carbonate percentages (Figure 34) reflect proximity to shell sources. Most localities with high levels of calcium carbonate occur near reli;t Dyster bars or shell-sand shoals. Other areas with moderate amounts are more difficult to interpret without more information on carbonate particle identity and mineralogy. Cottrell (1974) pointed out that this coast has a complex relationship between quartz-rich sand and carbonate rock. The bottom topography is complex due to a paleo-karst developed on the Crystal River Formation during lower stands of sea level. The mixture of carbonate particles could reflect mixing during sea level rise, or the I
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surface subctrate might also contain carbonate particles from breakdown of the prodigious quantity of shell material which has accumulated in recent history. Comparison with Previous Studies Cottrell (1974) also performed sediment trap studies in Basins 1 and
- 6. Sedimentation rates were calculated to be 0.88 cu/yr and 0.26 cm/yr, respectively. This study found the following average sedimentation rates:
Basin 1 - 2 cm/yr Basin 2 3.75 cm/yr Basin 3 4.17 cm/yr Basin 4 6.75 cm/yr Basin 5 4.8 cm/yr Basin 6 1.0 cm/yr Basin 7 2.5 cm/yr These rates are for gross sedimentation (uncorrected for resuspension and redeposition). Substrate samples showed no surprising differences. Cottrell's earlier study contained many more samples from each of the basins. In general, the sample locations compare favorably with the earlier study in respect to grain size parameters. Conclusions Basin 4 appears to be a sink for sediments (or at least more so that any other) . The basin meets criteria which would suggest active deposition occurring. That is, a t .an grain size of 3.62 0, strongly positively skewed sediment (0.42 0), the highest percent of organic matter (6.7%) and i n muj
a high accumulation rate (sedimentation rate of 6.75 cm/yr). Only two parameters suggest that Basin 4 receives its sediment load from the discharge canal, skewness and weight percent organic matter. The only other possible source of sediment for thi.9 basin would be the Cross-Florida Barge Canal to the north. However, there is no conclusive evidence from this study to support this contention. w, . a :: H hr , - ,--, ,. g ,-i w i9 3fpe 3 t% , characteristics as Station 24 in Basin 4. Both stations are located near a source of coarse shell which will affect grain size parameters. Both stations have high resuspension rates and contain > 5% organic matter on the substrate. Most other stations in Basin 3 have moderately small grain size, strongly positive skewness, and moderate levels of organic matter. It seems apparent that Basin 3 experiences somewhat moderate levels of deposition with highest levels occurring in the western portion of the basin near Elbow Reef, possibly due to suspension by the discharge current with subsequent deposition behind the oyster bar complex which could provide an energy shadow zone. The scour ef fect of an ebbing tide under proper wind stress conditions can transport fairly large quantities of sediment to offshore areas. Unfortunately, t. dispersal of suspended sediment on an incoming tide could not be demonstrated with the data. This " blow-out" of the shallower basins is most likely the most significant mechanism for transporting suspension loads into the outer basins via the canal system. High suspension rates were obstr7ed at Station F in Basin 1. The locations of Station F is comparable to Cottrell's Station 11 in the 1974 study. This area is apparently experiencing high rate of resuspension due to its location near the mouth of tidal creek which is still eroding its channel, n- , - ,,_ J ( . t
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Seasonal changes in substrate characterstics cannot be deduced from the quarterly samples because of a high variation in the characteri of the local sediments. Sediment trap samples tend to show seasonal dif ferences but the contribution of different mechanisms would be difficult to isolate from the data. In general, the seesonal trap samples show higher incidences of accumulation occurring in the second and third quarters. This is most likely attributed to an increase in runoff during seasonal rains on higher rates of sediment supply for the second quarter. Third quarter values are possibly affected more by seasonally high spring tides and very low neap tides coupled with the passage of cold fronts or storms during October and November. Fourth quarter data is more patchy than the rest of the quarters, but winter storms most certainly play a large role in redistributing sediment in these shallow basins. First quarter samples show relatively little sediment activity when compared with the remaining quarter. This period is characterized by a diminished frequency of storms, low rainfall and thus a low activity of sediment readjustment. . O m w
References Cited Bouyoucos, A. 1962. Hydrometer method improved for making particle size analysis of soils. Agron. Jour., 19: 57-68. Cottrell, D.J. 1974. Sediment composition and distribution at Crystal River Power Plant: Erosion vs. deposition. Report C. In: Crystal River Power Plant Environmental Considerations, Final Report to Interagency Research Advisory Committee, pp. 309-376, v. II. Florida Power Corp., St. Patersburg. Dean, W.E. 1974. Determination of carbonate and organic matter in calcareous sediments and sedimentary rocks by loss on ignition: Comparison with other methods. Jour. Sed. Petr., 44: 242-248. Folk, R.L. 1966. Petrology of Sedimentary Rocks. Hemphill's, Austin. 170p. Folk, R.L. and W.C. Ward. 1957. Brazos River bar: A study in the significance of grain size parameters. Jour. Sed. Petr., 27: 3-27.
- Mason,C.C. and R.L. Folk. 1958. Differentiation of beach, dune and eolian environments by size analysis, Mustang Island, Texas. Jour. Sed. Petr.,
28: 211-226. Maxwell, J.A. 1968. Rock and Mineral Analysis. Wiley Interscience, New York. 584 p. Valia, H.S. and B. Cameron. 1977. Skewness as a paleoenvironmental indicator. Jour. Sed. Petr., 47: 784-793.
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- Figure 12. First 4uarter caIDO"dL content for Sedime"' '*# samP l e** values "## ff . day, averag'. daily resuspe"sion.
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Values are in S/5 . c.n
-
FiS uf" 14. n Ltd quarter garbonal# content for sedimeUE ' , averaSe daily reSud' P#"$ k '
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Tx: ? s ' .? Figure 15. Fourth quarter carbonate content for sediment traps. Values are in g/m' day, average daily F2 resuspension. O O O
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Figure 16. First quarter siliceous content for sediment trap samples. Values are in t/u'. day, average daily resuopensian.
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O 2 __ Figure 17. Second quarter r ~1iceous content for sediment trap saraples. Values are in '/m day, average daily % .. resuspension.
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N tJ' g ure g 13- nird R"** ' 3L1iCeouS conte"' tor sediment trap 3nnoles- - lues "I" i" u,Z. day. aver"Be dall Y resusPC""
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' Figure 19. Fourth quarter = liceous content for sediment trap samples. Values are in g/m day, average daily
.: resuspension.
rd
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ff
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s p.- . ~ ~ ~ . .. Figure 20. 'f* " bour TY WeiBgg( COutU for 60diment trap samples a gg paSM 'l > g{ a Storm
- values at in BI"
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,_ pigure 21- Distribution of 100 parametef for dry weidg content. Values are to woorsfloo./*2 r - t-- n. c O O O
.
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"* D,stribution ft 100 paramet** (or OfB""ic matter content- Values are gg .a . ,ars/100g/m -
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Figure 23. Distribution of t;gg parameter for carbonate content. Values are in hours /200g/m . tx?
-t C..'
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_ Figure 24. Distribution of t 100 P"
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O APPENDIX A LABOMTORY PREPARATION AND PROCEDURES SUBSTRATE SAMPLE PREPARATION Laboratory preparations for substrate and sediment trap samples vary somewhat because of differences in the inherent properties of each type of sample. Substrate samplec followed this sample preparation scheme: Substrate Sample se dry at 70 C
. u disaggregate weigh 100 grams '
sieve thrEugh 2m mesh
<2m size fraction se f
HYDROMETER weigh <2m fraction - weigh 1 gram PROCEDURE
, < v wet sieve through sieve <2m fraction 639 sieve, retain through 250p Sieve
>63p nortion
.ilbVE weigh 5 grams PROCEDURE <250u fraetion v
1r STATISTICAL CARBONATE ORGANIC MATTER PROCEDURE PROCEDURE PROCEDURE O
,
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SEDIMENT TRAP SAMPLE PREPARATION Two preparation procedures were used for the sediment trap samples. The diurnal and multiple diurnal ssmples containel small amounts of sediment compared to the quarterly samples, and analysis was able to be done using filtering techniques. The quarterly samples had to be subsampled and thus required a sligh* y difference scheme of sample preparation. Preparation schemes are as follows: Sediment Trap Sample (one, three, five day only) a decant sample container to near-solids level 4I transfer to 1 liter beaker, rinse and clean sample container wet sieve sample through 63p sieve, retain >63p fraction, 63p fraction retained in sample container
>63u fraction <63u fraction Filter through Whatman Allow slurry to settle, 41, pre-weighed filter decant to near-solids paper l transfer to 1 liter beaker
'
dry at 70 C filter slu ry through a pre-weighed Whatman 41
,, filter paper weigh, subtract filter paper weight for dry weight ORGANIC MATTER PROCEDURE a
CARBONATE PROCEDURE Quarterly Sediment Trap Sample i L -- p77 ,..
.
9 decant to near-solids level of sample container 1/ transfer contents to beaker, rinse and clean sample container wash through 2mm and 600p sieves, retain <600p in sample container, describe >2mm and
>600p fractions transfer contents to large container obtain two, 500ml subsamples with constant stirring a
500ml subsample measure total volume 500 m1 subsample of remaining sample transfer to soil wash through 63p sieve dispersion cup i HYDROMETER >63u <63u 9 PROCEDURE h discard subsample filter, dry place beaker weigh for in drying oven dry weight evaporate water until dry s { ORGANIC T grind and MATTER weigh sample PROCEDURE CARBONATE I' C C :"".2 ORGANIC MATTER PROCEDURE The organic matter procedure is a loss-on-ignition technique whereby an oven-dried sample of one gram of substrate sample is placed into a pre-combusted, preweighed crucible, and heated to 550 C for four hours in a muffle furnace. After cooling to room temperature in a dessicator, the e
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.
sample and crucible are weighed again to determine the weight loss of organic matter by ignition. This procedure has been compared to other existing methods for accuracy and precision by Dean (1974). Dean states that the procedure was found to equal or excel the accuracy and precision of several other methods. A slight modification of the above procedure was used in the analysis
,e ,a se % y . , a : -- > ., - ~, -, 9 , , , , , ~ , , ., : .. --t,-e,7 ,- p .y dictated by the dry weight of the sample fractions (>63 and <63u). These weights varied from less than one gram to nearly fif teen grams. All filter paper used in the analysis was ashless (0.01% ash).
CARBONATE PROCEDURE The procedure for analyzing inorganic carbonate in the substrate samples followed a modified procedure of Maxwell (1968) for limestone residues. This procedure utilizes the . weight loss of carbon as carbon dioxide upon acidification with 6N hcl for substrate samples which contain minor amounts of organic carbon (less than 4%). Approximately 10g of oven-dried sample was sieved through a 250p sieve in order to lessen the influence of coarse shell material produced in situ. A Sg sample was weighed out and placed in a 250 mi beaker. One hundred ml of 6N hcl was carefully added to the beaker with a few drops of ethanol to prevent fo aming . The sample was washed with distilled water and filtered with a Buchner funnel on a pre-weighed filter paper (Whatman 41). The remaining residue was then dried at 70 C and weighed again to determine the weight loss of carbonate in the sample. The weight loss is expressed as the weight percent of carbon dioxide as inorganic carbonate. A different method of analysis for carbonate was used on sediment trap samples. This particular method has been reported by Dean (174) and, like r- , ,, , ; . - , c - O l '7 gjr
-
J ggg
the ORGANIC MATTER PROCEUDRE, it utilizes a loss-on-ignition technique. The method was convenient because the samples could be analyzed for their carbonate content directly af ter weighing the weight loss at 550 C for organic matter centent. Inorganic carbonates (aragonite, calcite, dolomite) decompose into their oxides and carbon dioxide at about 800 C. The procedure used 1000 C for four hours for the analysis as suggested by Dean (1974). HYDROMETER PROCEDURE This procedure is modified af ter Bouyoecos (1962) and entails the following procedural design: Materials: Soil hydrometer, soil mixer, 1000 ml glass cylinders, dispersion cups with baffles, 5% Calgon solution, thermometer, 500 ml glass beakers, cover glasses, rubber stopper for cap of soil cylinder, plastic wash bottles, stop watch, amyl alcohol. Procedure:
- 1. Weigh 50 g of air-dry sediment or 100 g if very sandy, which has been passed through a 2mm sieve.
- 2. Transfer sediment to 500 ml beaker, add 100 ml of 5% Calgon solution, mix thoroughly, let stand covered with watch glass for 12-15 hours or overnight.
- 3. Transfer cnd wash contents into soil dispersion cup with distilled
;er, c.:._ .... ;... up a U. ;.. r Enree inches of the top.
- 4. Connect cuy to soil mixer and stir for 15 minutes.
- 5. Disconnect and wash contents into soil cylinder using water jet from plastic bottle, and fill to liter mark.
- 6. Place rubber stopper on cylinder and shake contents by turning cylinder completely upside down and then back again.at least 20 times.
- 7. Immediately start timer or stop watch, remove stopper, add three drops of amyl alcohol to dissipate froth, then gently place the hydrometer into suspension. Take reading at 40 seconds.
"
J ll i j y s yad gfr-'
- 8. Slowly remove hydrometer. Allow cylinder with sampI.e to set for one hour, re-insert hydrometer slowly and carefully, and read again.
.
- 9. Carefully remove hydrometer. Allow cylinder to set for an additonal hour (2 hours of time from agitation) and take the final reading.
- 10. Af ter the two hour reading, wash suspension on a 63u sieve, discarding the materials which pass through. Retain portion on the sieve, dry in oven at 70 C. Use this portion of the sample for SIEVE PROCEDURE.
cc- t i m s ,~ - e t -,: 14 " - 9 : wvn eteating 1- n Caim ,aciution, the hydrometer has a stem reading of approximately 4.5. This value must be subtracted from every hydrometer reading obtained according to this procedure. An additional correction for temperature may be necessary as the hydrometer is calibrated to read correctly at 68 F. If the temperature differs significantly, a correction must be made as follows: Tempera 5ure correcti n = .2 x (suspension temperature F - 68 F) Add this algebraically to the observed hydrometer reading. After all corrections have been made, obtain percentages of sand, coarse silt, fine silt, and clay as follows: At 40 seconds: p erected hydrometer reading X 100 = %(c. si. + f. si. + clay) Dry wt. of soil At one hour: Corrected hydrometer reading X 100 = %(f. si. + clay) Dry wt. of sotl At two hours: Corrected hydrometer reading X 100 = % clay Dry wt. of soil
% sand = 100 %(c. si. + f. si. + clay)
% coarse silt = %(c. si. + f. si. + clay) %(f. si. + clay)
% fine silt = %(f. si. + clay) % clay
._
ya +w
.
. . . s ,,a
A modified hydrometer procedure was used for quarterly sediment trap samples. It is not possible to obtain a dry weight on such a sample before the analysis since the dried material may lose much of the particulate properties inherent in the wet sample. In this case, a 500 mi subsample was obtained from the large sample and used in the analysis. The dry weight of the subsample was obtained after the procedure in order to calculate the percentages. Except for this departure from procedure, all other steps for the HYDROMETER PROCEDURE are the same as above. SITE PROCEDURE Af ter washing the silt and clay frem the sample used in the HYDROMETER PROCEDURE, the sand portion was receovered and used in this procedure to obtain the particle size distribution of the sand fraction. This sample was dried at 70 C, weighed and then sieved on a sieve shaker at 1/2 0 intervals (in mesh sizes of 25, 35, 45, 60, 80, 120 and 230, see STATISTICAL PROCEDURE for discussion of 0). After sieving for approximately 20 minutes, the quantity of sand retained on each screen was weighed and recorded for statistical analysis of parameters of particle size distribution. STATISTICAL PROCEDURE Data obtained form the SIEVE PROCEDURE were analyzed by a special statistical procedure developed by Folk (1966). These grain size parameters are calculated form a cumulative frequency curve of grain diameter versus weight percent (obtained by sieving at 1/2 0 intervals). The phi (0) scale is used as the principal measure of diameter and is expressed as -log 2mm, where mm is the diameter of the particle in O
- .,
// 9 /.t Q u
millimeters. Cumulative weight percents are plotted on log probability graph paper with their respective weights. From the graph, diameters at various percentiles are read and used in Folk's formulas in order to obtain the appropriate grain size parameters. For example, if the specific formula asks for 084, this indicates that the grain size (in phi units) occurring at the 84th percentile mark of the grain size distribution must oe reau t r ota cae draph and usec in ene calculation. ine tormulas anu significance of Folk's parameters are: Crachic mean diameter: Also called mean grain size, this parameter measures the average grain size of the sediment and is computed by the formula: (016 + 050 + 084)/3 Sorting coefficient: Also referred to as inclusive graphic standard deviation, it is calculated by the formula: 084 016 . 095 Of Sorting is a measure of the dispersion around the mean (standard deviation) and includes 90% of the grain size distribution in the calculation. Values for sorting are classified by the following scheme: Very well sorted .350 Well sorted .35 .500 Moderately well sorted .50 .710 Moderately sorted .71 1.00 Poorly sorted 1.0 2.00 Very poorly sorted 2.0 4.00 Extremely poorly sorted > 4.00 Inclusive graphic skewness: Skewness is a measure of the symmetry of the frequency curve. A perfectly symmetrical curve has a skewness of 0.0. Negative skewness values indicate that the distribution is skewed toward the coarser size classes. Positive values indicate that the direction of asy= metry is in the direction of the finer grain sizes. The formula for this parameter is: 016 + 084 2050
- 05 + 095 2050 2(084 016) 2(095 05) 4
- -.
Cll
.
} Li()
- W
Skewness values range from +1.00 to -1.00 Strongly fine-skewed +1.00 to +0.30 Fine-skewed +0. 30 t o +0.10 Near symmetrical +0.10 to -0.10 Coarse-skewed -0.10 to -0.30 Strongly coarse-skewed -0.30 to -1.00 Graphic kurotsis: Although kurtosis is always calculated as a measure of " peakedness" of the grain size distribution, its relationship to depositional environments is still questionable. It is calcualted by the formula: 095 05 2.44(075 025 Kurtosis values range from .41 to 8.00. The ranges and classifications are: Very platykurtic 0.41 to 0.67 Platykurtic (flat) 0.67 to 0.90 Mesokurtic 0.90 to 1.11 Leptokurtic (peaked) 1.11 to 1.50 Very leptokurtic 1.50 to 3.00 Extremely leptokurtic 3.00 to 8.00
.
O
,, i 250
.
> ,
A P P i :I D I X 3 Calculated Rates of Resuspension for Sediment Trap Samples
,
m. s e+* f
\
O [/'
!. .I) 'l
-
~
'-
APPFJ4 DIX B
,
,, TRAP A g/m . day 5 Days 90 Days 24 Iteurs 3 Days
% -
- t !
Dry vt. Dry vt. Dry wt. Dr: wr.
> 6 'u <63u Total Total > 6 3u <63u Total Total >63p <6F To+ a Total .,61u < 6 3u Total Total let 4 arter Dry weight 37.1 22.9 59.9 ----
21.1 25.4 46.* ---- 17.2 48.R 66.0 ---- 14.1 40.6 54.7 ---- Organic natter 6.2 7.8 10.6 23.3 4.2 5.0 9.2 19.8 3.3 9.6 12.9 19.6 0.7 9.9 10.6 19.3 Carbonate 3.5 7.1 10.6 17.7 37 8.0 11.9 25.5 3. P 14.0 17.1 25.9 0.3 7.0 7.3 13.4
%
Siliceous 27.4 B.0 35.3 59.0 23.0 L2
- 25.3 54.7 10.8 25.2 36.0 54.5 13.1 23.7 36.8 67.3 8
s 2nd O3ar_t g Dry weight - nat' sampled - 19.1 33.1 52.2 ---- 13.1 18.8 31.9 ---- 7.5 135.1 142.6 --- Organic matter - not sampled - 2.9 6.5 9.4 17.9 1.2 4.3 5.5 is.3 1.0 27.6 28_,5 20.1 Id8' c_, C,- ( Carbonate - not sampled - 2.7 6.7 9.4 18.1 t' . 7 3.4 4.1 12.9 0.6 29.9 30.5 21.4 _ f - Siliceous - not sanpled - 13.5 19.9 33.4 64.0 11.2 11.1 22.3 69.8 6.0 77.6 83.6 58.5. Q
-
J 1 C2. C' 3rd 92arter 8 b L c ,' Dry weight 3 '* . 9 18.9 113.8 ----
- not sampled - 25.7 115.f 141.2 ----
6.2 153.3 159.6 ---
$'
t>- Organic matter 1.; 14 4 18.4 16.2 - not sampled - 2.5 23.6 26.1 18.4 1.3 46.6 47.9 28.9
~
U Carbonate 7.4 23.2 30.6 26.9 - not sampled - 4.3 23.4 27.7 19.6 0.7 19.8 20.6 12.4 Siliceous 24.0 40.9 64.8 59.9 - not sampled - 18.9 68.6 87.4 62.0 4.3 86.9 91.1 58.7
-
4th Quarter _
,
Dry weight -i.ot sampled - - not sampled - 13.4 152.5 165.8 ---- 5.7 67.3 73.0 ---- Organic matter - isnt nampled - - not sampled - 3.3 30.7 33.9 20.4 1.2 13.4 14.7 20.1 Carbonate - not nampled - - not sampled -
-
1.6 44.6 46.2 27.9 0.7 22.6 23.3 31.9 Silicec e - vint sampled - - not nampled - 8.6 77.2 85.7 51.7 3.7 31.3 35.0 48.0 0
%,
N
=- ,
# 9 9
.
TRAP B g/m . day 24 Houre 3 Days 5 Days 90 Days
% % % %
Dry wt. Dry wt. ; r3 wt. Dry wt. Ist Quarter >63u <63p Total Total >63u <6's Total Total >63p <63w Total htI > 61s < 6 3.4 Total Total Dry weight 13.6 24.7 38.2 ---- 16.1 37.9 54.0 ---- 33.0 173.2 106.2 - -- 1.1 30.5 31.6 - - - Organic matter 4.3 7. 5 11.9 31.0 2.1 6.9 9.0 16.7 7.I 29.9 31.0 I).9 0.1 8.2 8.3 26.1 Carbonate 2.I 7.1 9.2 24.1 4.5 15.1 19.6 36.4 10.5 67.3 77.6 L.b 0.2 8.3 8.5 26.8 Siliceoue 7.2 10.1 17.1 44.9 9.5 15.9 25.4 46.9 95.4 76.0 91.4 ~.:. 3 0.8 14.0 14.8 47.1 2nd QJarrer Dry weight 29.3 730.8 760,1 ---- 10.1 39.9 50.1 ---- 21.9 56.3 78.4 - - - 9.8 171.4 181.2 - - - - o (" ' Organic matter 5.4 147.4 152.8 20.1 1.6 8.5 10.1 20.2 3.5 11.9 15.3 19.5 0.7 34.5 3 '. , 2 19.4 Carbonate 9.1 240.1 249.2 32.8 4.0 14.8 18.8 37.5 6.8 18.8 25.6 L F 3.3 52.5 55.8 30.7 . , '~5 Siliceous 14.8 343.3 358.1 47.1 4.5 16.6 21.2 42.3 11.6 25.6 37.5 W.7 5.8 84.4 90.2 49.9
^ !_ i C
x J 3rd Quarter L Dry weight 15.0 74.7 89.7 - - - - 18.6 117.7 116.4 ---- 12.6 79.7 72.3 - - - 3.7 176.2 179.9 ---- Organic matter 4.0 12.9 17.0 18.9 3.5 22.3 25.8 13.9 2.7 15.6 18.2 19.7 0.7 47.8 48.5 27.0
' Carbonate 5.3 23.5 28.8 4.5 45.0 49.5 36.4 3.1 25.9 29.0 11. 4 1.2 40.9 42.1 26.4 Siliceous 5.7 38. 3 43.9 49.0 10.6 50.4 61.144.7 6.8 38.2 45.1 '. t . 9 I.8 87.5 89.3 46.6
', 4th Quarter
.
Dry weight 40.7 66.6 107.3 ---- - not sampled - 21.3 120.5 141.b -- 47 215.8 220.5 ----
%
organic mattet 7.4 11.0 18.4 17.2 - not sampled - 4.3 22.8 27.1 19.1 1.1 39.6 40.7 18.5 Carbonate 10.7 29.1 39.8 37.1 - not sampled - 6.4 42.4 48.9 34.5 1.0 80.7 81.7 37.1 N ("-,* 26.5 49.1 45.7 10.6 55.3 65.8 An.4 2.6 95.5 95.1 44.4 Siliceous 22.6 - not may L J - L?
TRAP C g/m . day 74 ffeure 3 Days 5 Daye 90 Deye I I t ! Dry vt. Dry vt. Dry wt. Dry vt. Ist Quarter > 6 )u 61u Total Total >6 3u < 6 3u Total Total >63p < 6 3u Total Tot a l >63u <63p Total Tetal Dry weight l !. 3 42.6 57.3 ---- 4.9 23.2 2R.0 ---- 7.0 26.8 13.8 ---- 3.1 30.5 33.6 ---- Organic matter 1. 3 9.1 13.0 22.6 I.9 4.1 5.9 21.2 I.0 4.6 5.6 16.6 0.3 7.8 8.1 24.2 Carlsonate 0. .? 17.2 17.4 30.5 0.2 9.2 9.4 33.4 I.7 9.8 11.5 33.9 0.1 6.0 6.1 18.2 Siliceous 10.4 16.3 26.9 46.9 2.8 9.9 12.7 45.4 4.3 12.4 16.7 49.5 2.7 16.7 19.4 57.6 2nd Quarter Dry weight 31. t 115.6 367.6 ---- 16.1 17.0 33.0 ---- 16.0 21.5 38.5 ---- 4.1 86.8 90.9 ---- Organic matter 5.8 79.1 R4.6 23.0 2.3 3.2 5.5 16.5 2.3 4.9 7.2 18.6 0.3 19.7 20.0 22.0
.
Carbonat, 5. 7 7 '. 0 79.7 21.6 3.6 5.6 9.2 28.0 2.1 6.2 8.3 21. '. 0.4 32.3 32.7 35.9
' ' Siliceou, 20.I 1 R 2. 5 203.3 5%.4 10.2 8.2 18.3 55.5 11.6 I P. 4 23.0 60.0 3.4 34.8 38.2 42.1 (se U j (; ; 3rd Quarter i
'
C D ry weight 22.'3 16.9 99.8 ---- 17.3 117.8 134.9 ---- 29.5 10R.7 138.3 ---- 5.6 135.4 140.9 ----
$'
aJ
,
Organic matter 1. I 19.6 20.8 20.9 2.3 24.5 26.8 19.9 2.6 22.3 24.9 18.0 0.4 37.8 38.3 27.1 i Carbonate 2.1 16.1 IR.I 18.2 1.6 36.8 38.4 28.4 3.5 29.9 33.5 24.3 0.7 24.2 24.9 17.7 Siliceou, l '3. > 41.2 60.9 60.9 13.2 56.5 69.7 51.7 23.4 56.5 79.9 57.7 4.5 73.4 77.7 55.2 4th quarter Dry weight not sampled - - not sampled - - not nampled - - not sampled - Organic matter - not nampled - - not nampled - - nat nampled - - not sampled - Carbonate - not nampled - - not sampled - - not sampled - - not nampled -
- not sampled - - not sampled - - not sampled -
g Sillecous - not nampled - ~. ;
%Q b
J' n 9 O O
- T2AP E g/m . day 24 llauru 3 Days 5 Daye 90 Daye
*
% % %
Dry wt. Dry wt. Iry wt. Dry vt. Ist Quarter >63u <6b Total Total Total Total >639 <63u Total Total >63u <63u total Total
>63u }.<63u Dry weight 11.2 13.6 24.8 ----
10.2 9.6 19.8 ---- 18.9 62.2 81.1 ---- 2.0 44.5 46.5 ---- Organic matter 2.7 5.1 7.8 31.3 1.5 2.3 3.8 19.4 4.6 13.3 17.9 22.1 0.4 11.7 12.5 26.0 Carbonate 6.2 16.8 22.9 1.2 3.4 4.6 23.4 4.7 18 's 23.0 28.4 0.2 8.8 9.1 19.6 Siliceous 2.3 7. 5 3.9 !!.4 57.2 9.6 30.5 40.2 49.5 1.4 24.0 25.3 54.4 2 nd Qua r t e.- Dry weight 10.2 204.5 214.8 ---. 5. 5 13.8 19.3 ---- 15.9 13.9 29.8 ---- 5.3 100.5 105.8 ---- Organic matter 2.7 33.2 35.9 16.7 1.0 3.4 4.3 22.5 3.4 3.3 6.7 22.6 0.6 26.0 26.6 25.1 Carbonate 1.2 66.7 67.9 31.6 1.1 3. 5 4.6 23.9 4.0 3.7 7.7 15.9 1.2 23.6 24.8 23.4 siliceous 6.3 104.6 111.0 51.7 3.4 6.9 10.4 53.6 8.5 6.9 15.4 51.5 3.5 50.9 54.4 51.5 _3rd ouarter 1 Dry weight 35.0 56.0 91.0 ---- 22.8 72.5 95.4 ---- 22.5 45.9 (28. 3 ---- 3.2 73.1 76.9 ----
$
4 Organic matter b.1 12.9 18.9 20.8 5.4 15.5 20.9 22.0 5.3 8.9 14.2 10.8 0.6 21.2 21.8 28.4 Carbonate 16.7 12.8 M. 5 M.3 4.4 U.6 M.9 h.2 4.4 13.9 18.3 h.8 0.4 11.5 !!.9 15.5
'.) Siliceous 12.2 30.3 42.6 46.9 13.0 34.4 47.6 49.8 12.8 23.1 35.8 42.4 2.2 41.0 43.2 56.1 .
4th Quarter .,) Ory weight - not sampled - - not sampled - 5.8 18.7 24.5 ---- 2.3 62.5 64.8 ----
,
,_'1 6. g.. . . t'er - not sainpled - - not sampled - 1.5 4.5 6.0 24.5 0.8 12.0 12.5 19.8 Carbonate - not sampled - - not sampled - 1.0 4.5 5.5 22.6 0.1 26.0 26.1 40.3 Sillceous - not sampled - - not aampled - 3.2 9.8 13.0 52.9 1.5 24.5 25.9 39.9
TRAP r g/m . day 3 Days 5 Pays 90 Days J4linurs % %
% %
Dry wt. Dry vt. Dry vt. Pty vt. Ist rN a r t e r 63u Total Total >63u *63u Total Total <63u Total Total >63u <63p Total Total
'6's >632 Dry weight 's.4 f. 3.1 68.4 ---- 15.6 44.7 58.3 ----
20.3 61.6 81.9 ---- 16.4 71.3 87.7 ---- Organic matter 5.6 3.9 9.4 11.8 3.5 8.1 11.6 19.8 3.2 11.9 15.0 18.4 1.4 I4.1 15.5 17.7 Carbonate 10.0 14.8 24.a 36.4 16.4 27.5 47.3 3.3 19.2 22.5 27.5 1.0 16.3 17.2 19.6 Siliceoue 9.R 24.4 34.1 49.8 20.2 19.2 32.9 13.8 30.5 44.4 54.1 14.0 40.9 55.0 62.7 2nd Q;arter Dry weight 61.1 110.8 392.1 ---- 30.8 57.1 88.0 ---- 41.0 73.1 116.1 ---- 14.8 149.3 164.0 ----
--
Organic matter R.8 69.2 78.0 19.9 4.2 13.3 17.4 19.8 5.4 14.7 20.1 17.3 1.5 33.9 '35.4 21.6
- , %q Carbonate 4.6 RI.2 85.8 21.8 3.7 10.8 14.5 16.4 3.8 16.6 20.4 17.5 0.9 47.7 48.6 29.6 3 Siliceou, 47.9 180.4 228.3 SR.3 22.9 33.2 56.1 63.8 31.8 43.8 75.6 65.2 12.4 67.7 80.0 48.8 m
n( 3 C ') I y gl 3rd Q;arter e
> Dry weight 464.6 2'84.6 759.2 ----
75.5 264.8 340.3 ---- 63.2 291.2' 354.4 ---- 13.0 244.2 257.2 ---- os I
-' 20.1 60.5 80.6 10.6 11.4 $5.9 67.3 19.8 9.5 55.6 65.1 18.4 1.9 127.7 129.6 50.4 Organic matter 24.0 59.2 81.3 10.9 3.2 55.9 59.1 17.3 3.8 58.9 62.7 17.7 1.3 24.3 25.5 10.0 Carbonate Siliceous 420.5 174.9 595.3 78.5 60.9 I?3.0 213.9 62.9 49.9 176.7 226.6 63.9 9.8 92.2 102.1 39.6 4th quarter Dry weight - not sampled - - not nampled - 19.3 185.5 204.8 ---- 9.9 111.7 121.6 ---
Organte matter - not sampled - - not sampled - 4.8 38.0 42.8 20.9 2.3 23.6 25.9 21.3 Carbonate - not sampled - - not sampled - 2.1 56.1 58.2 28.4 0.7 27.4 28.1 23.1 Siliceous - not sampled - - not nampled - 12.4 91.4 103.8 50.7 6.9 60.7 67.6 55.6 e-
's
**e..I
.4 We e e
a TRAP 2 g/m day 24 Hours 3 Days 5 Days 90 Days
^
1 % 1 Dry wt. Dry vt. Iry wt. Dry wt. Ist Quarter sh ip <63u Total Total >63u <63p Total Total >63p <63u Total '. c t a l Q <63a Total Total Dry weight 10.6 33.7 44.3 ---- 6.5 26.3 32.8 ---- 7.5 39.3 46.8 - - - 4.9 28.8 33.7 ---- Organic matter 4.0 7.9 11.9 26.9 1.3 6.1 7.3 22.4 1.1 7.6 8.7 It .5 0.2 7.0 1.2 21.4 Carbonate 2.6 14.0 16.6 37.5 1.5 8.1 9.7 29.6 1.6 12.7 14.I 4.5 0.2 b.3 6.5 19.1 S111ccous 4.0 11.8 15.8 15.6 3.7 12.1 15.8 48.0 4.8 19.0 23.8 'a l 0 4.5 15.5 20.0 59.5 2nd Quarter Dry weight 22.8 221.7 244.5 ---- 11.6 18.5 30.1 ---- 9.5 !!.7 21.2 - - - - 2.3 73.4 75.8 ---- 5.9 19.5 3.6 0.4 15.3 15.7 20.7 ( ) Organic matter 5.8 64.1 69.9 28.6 1.6 4.3 1.0 2.6 17.0 1.6 69.4 71.0 29.1 2.7 4.7 7.4 24.6 0.9 3.7 4.6 '!.6 0.4 24.9 25.3 33.4 o Carbonate i 15.4 88.2 103.6 42.3 7.3 9.5 16.8 55.9 7.6 5.4 13.0 it .4 1.5 33.2 34.8 45.9 a Siliceous rQ L._J E./ , ,p 3rd Quarter 1
-
C 20.1 87.1 107.2 ---- 21.8 102.4 124.2 ---- 20.5 !!!.2 131.7 -- 2.1 ?$.1 77.2 ----
$I Dry weight ha Organic mattec 5.5 13.6 19.1 17.8 2.8 22.9 25.7 20.7 2.9 21.6 24.6 It . 7 0.5 21.3 21.8 26.3 >
Carbonate 3.4 39.8 43.2 40.3 5.2 30.1 35.4 28.4 3.7 34.1 37.8 Jr.7 0.1 16.5 lb.6 21.4 11.2 33.7 44.$ 42.0 13.8 49.4 63.1 50.9 13.9 55.5 69.3 %.7 1.5 37.3 38.8 50.3 Siliceous 4th p arter Dry weight - not sampled - - not sampled - 13.1 76.0 89.1 - - - - 3.2 71.5 7b.7 ---- Organic nut ter - not sampled - - not sampled - 2.6 14.3 16.9 19.0 1.1 16.4 17.5 22.7 Carbonate - not sampfad - - not sampled - 3. 0 26.6 29.6 6: .' O.2 19.6 19.8 25.8 g siliceous - not sampled - - not sampled - 7.6 35.1 42.7 !. . . H 2.0 37.5 39.5 51.5
-J
-
i
.
TRAP 3 g/m . day 5 Days 90 Days 24 Houre 3 Days %
% % %
Dry vt. Dry vt. Dry vt. Dry vt.
>63p <63u Total Total > 6 3p <63p Total Total Ist Qu.i r t e r > A_? ' < ^ 3 u,
_ Total Total >63u M Total Total 4.3 47.4 51.7 12.1 89.6 101.6 ---- 7.5 65.9 73.5 ---- Dry weight 6.i 00.8 67.2 ---- ----
- 1. 2 10.5 0.0 7.7 7.7 14.9 2.4 15.8 18.2 17.9 0.5 18.0 11.5 15.7 Organte matter 1. 9 7.I
.
1.1 20.2 21.3 41.2 3.9 12.3 36.3 35.7 2.5 27.0 29.5 40.3 Carbonate 1. 1 21.6 24.9 37.1 3.2 19.5 22.7 43.9 5.8 41.5 47.1 46.4 4.5 27.9 32.5 44.1 Siliceous 1.1 l '. 0 35.2 52.4 N 2nd (Narter (PJ Dry weight 36.0 l 'n . 6 882.5 ---- 34.9 40.2 75.0 ---- 10.2 35.0 45.2 ---- 26.7 203.0 229.7 ---- 194.1 22.0 5.5 8.1 13.6 IR.1 1.6 6.4 8.0 17.7 1.3 40.4 41.7 18.1 o Organic eatter 10.0 18 .1 i . 245.6 27.8 12.7 13.2 25.9 34.6 3.7 12.6 16.4 36.2 4.9 74.8 79.7 34.8 Carbemate 6.7 ?1H.8 442.8 50.3 16.7 18.9 35.5 47.3 4.9 16.0 20.8 46.1 20.5 87:8 108.3 47.1 20.' '22.7
.
i
.F > Siliceoun f) p ---
..
[ 3rd Quarter 13.7 244.8 258.5 I 25.4 261.0 286.4
----
32.5 207.5 240.0 ----
---- 22.5 200.9 223.4 ----
Dry weight 0i r-U Organic matter 4.9 10.2 35.0 14.6 5.0 47.2 52.2 18.2 3.6 28.6 32.3 14.4 1.3 58.2 59.5 23.0 42.8 91.7 96.7 33.7 5.9 82.4 88.3 39.6 3.2 67.3 70.5 27.3 Carbonate 14.6 88.3 102.9 5.0 15.4 48.1 13.0 89.9 102.8 46.0 9.2 119.3 128.5 49.7 S111ccous 11.0 89.0 102.1 42.7 122.1 137.5 4 t h Qqr t e r Dry weight - not mampled - - not sampled - 7.1 427.1 4 34.2 ---- 10.5 291.6 302.1 ----
- not sampled - - not sampled - 1.1 57.3 58.4 13.5 1.6 68.5 70.2 23.2 organic matter
- not sampled - - not sampled - 2.3 191.6 193.9 44.7 2.6 63.3 65.9 21.8 Carbonate m ' - not nampled - 3.6 178.2 181.8 41.8 6.2 159.8 166.0 55.0 Sillecoug - not nampled -
;
%
0,' 3
.
0-- O O O
.
TRAP 6 g/m . day 3 Days 5 Days 90 Days 24 llours 1 % %
%
Dry wt. . Iry wt. Dry wt. Dry wt.
>63u < 6 3p Total Total Ist Quarter >63s <6 3p Total Total > 6 3u <63u Total Tc,t a l >63u <63u Total htf Dry weight b l. 3 19.3 34.8 54.1 ----
20.0 105.4 125.4 - - - - 4.6 61.2 65.8 ---- 22.3 41.0 ---- 10.1 14.7 23.2 0.9 5.8 6.8 12.5 3.5 17.6 21.0 I t. 8 0.5 14.8 15.3 23.2 Organic matter 4.6 Carbonate 1.3 13.2 14.5 23.0 1.4 14.1 15.4 28.4 5.2 36. 3 41.5 is.0, 0.5 14.6 15.0 23.0 16.4 17.7 34.1 53.8 17.0 14.9 31.C 59.1 11.3 51.5 62.9 $0.2 3.6 31.8 35.5 53.8 Siliceous 2nd Quarter 17.1 482.1 519.2 ---- 11.9 18.7 30.6 ---- 26.9 31.8 58.7 --- 9.2 144.6 151.8 ---- Dry weight
'
7.4 186.5 123.9 23.9 I.9 3.3 5.3 17.2 19.7 6.7 26.5 45.1 0.7 $2.7 33.4 21.7 Organic matter 7.4 107.9 115.3 22.3 J. 7 9.6 13.3 43.2 1.6 10.5 12.2 20.7 1.4 49.0 50.4 32.8 Carbonate 22.3 257.7 280.0 53.8 6.3 1.8 12.0 39.6 5.6 14.6 20.0 14 . 2 7.1 62.9 70.0 45.6 Siliceous ( . .J h ") 3rd Quarter l ') Dry weight 22.9 123.7 146.6 ---- 31.5 185.4 216.8 -- - 22.6 135.9 158.6 ---- 12.4 224.8 237.2 ---- 1.6 20.5 23.1 15.8 4.6 36.1 40.7 18.8 2.3 23.3 25.5 10.1 1.4 59.0 60.4 25.5 Organic matter 1.4 44.6 46.3 31.4 5. 3 56.7 b2.1 28.7 3.6 47.0 50. t, l! .h 1.2 39.9 41.1 17.3 Carbonate 18.9 58.6 /3.5 52.8 21.6 92.6 114.0 52.6 16.7 65.6 82.5 5. . ! 9.8 125.9 135.71 57.2 Siliceous 4th quatter Dry weight - not sampled - - not sampled - 1.6 340.9 448.5 - - - - 5.9 222.7 228.6 ---- Organic matter - not sampled - - not sampleJ - 0.9 58.3 59.2 1/.G 1.0 54.9 55.9 24.4
, Carbonate - not sampled - - not sampled - 1.2 127.3 128.5 3' . 9 1.1 44.1 45.2 19.8 Siliceous - not sampled - - not sampled - 5.5 155.3 160.8 41.. I 3.8 123.7 127.5 55.8 re U1 N)
TRAP 9 g/m . day 24 Itours 3 Days 5 Days 90 Days 2 1 % 2 Dry wt. Dry vt. Dry vt. Dry wt. Ist Quarter de ly < 6 3u Total Total > 6 3u <6)u Tots 1 Total >63p <63u Total Total ilu <63u Total Total Dry weight 10.8 44.2 55.0 ---- 13.2 73.1 86.3 ---- 20.9 134.4 155.3 ---- 5.1 82.4 87.5 ---- Organic matter 1.5 11.5 13.0 23.6 0.6 11.2 11.8 13.7 3.5 23.9 27.3 17.6 0.5 18.7 19.2 22.0 Carbonate 2.0 15.1 17.1 31.2 4.4 33.9 38.3 44.4 4.6 52.9 57.5 37.1 1.5 24.2 25.7 29.3 Siliceous 7. 3 17.6 24.9 45.2 8.2 28.0 36.2 4l.9 12.8 57.6 70.5 45.3 3.1 39.5 42.6 48.7 2nd Quarter Dry weight 9.1 273.6 282.8 ---- 14.0 83.5 97.5 ---- IC.0 56.7 75.6 ---- 25.7 455.8 481.5 ---- Organic matter 1.4 54.6 56.0 19.8 2.3 12.8 15.I 15.5 2.7 10.2 12.8 17.0 1.8 93.8 95.6 19.8 Cathonate 2.9 F8.7 91.6 32.5 5.6 39.6 45.2 46.4 7.2 23.3 30.4 40.3 10.7 141.9 152.6 31.6 Siliceous 4.8 1 10. 3 135.2 47.7 6.1 11.1 37.2 38.1 9.1 23.2 32.4 42.7 13.2 220.1 233.3 48.6 3rd Quarter , u Dry weight 72.1 246.7 318.8 ---- 85.0 259.7 344.8 ---- 72.9 285.5 358.4 ---- 23.2 580.2 603.4 ---- y Organic matter 11.3 42.0 53.3 16.7 12.5 44.1 56.6 16.4 11.6 36.5 48.1 13.4 2.3 76.4 78.7 13.0 Carbonate 30.9 101.0 131.9 42.1 27.8 107.0 114.8 39.1 30.8 137.7 168.5 47.1 11.2 276.8 287.9 47.8 Siliceous 29.9 101.7 131.6 41.2 44.7 108.6 153.4 44.5 30.5 111.3 141.8 39.5 9.7 227 0 236.8 39.2 4th quarter Dry weight AO.7 125.0 1R6.7 ----
- not sampled - 45.9 383.4 429.4 ----
19.0 360.8 379.8 ---- Organte matter 6.6 22.7 29.4 15.7 - not sampled - 5.4 48.0 53.4 12.4 2.3 79.1 41.4 21.4 Carbonate 34.4 57.2 91.6 49.t - not sampled - 25.3 198.3 223.6 52.1 7.3 109.1 116.3 30.6 Siliceoug 19.7 46.1 65.7 35.2 - not nampled - 15.2 137.1 152.4 35.5 9.4 172.6 182.1 48.b
,~,
w %i
~
m
.
9 9 9
TRAP 11 2 - g/m .d.sy 24 Hours 3 Days 5 Dave _ 90 Days
% ~ % %
Dry wt. Dry wt. .ry vt. Dry wt. let Quarter >63p <63u Total Total >63p <63u Total Total >63u <639 Total T4 tal > 6 3p <6b Total Total Dry veight 53.5 85.3 138.8 ---- 28.9 172.1 201.0 ---- 56.5 246.8 303.3 -- -- 22.6 132.1 154.7 ---- Organic matter 10.1 5.5 15.6 !!.2 2.8 24.9 27.8 13.8 7.0 38.4 45.3 I .0 1.5 20.8 22.3 14.4 Carbonate 2.6 27.3 29.9 21.6 7.8 82.9 90.8 45.3 22.1 102.8 125.0 1.2 7.7 57.4 65.1 42.1 Siliceous 40.8 52.5 93.3 67.2 18.3 64.3 82.4 40.9 27.4 105.6 133.0 43.8 13.4 53.9 67.3 43.5 2nd Quarter Dry weight 44.4 448.9 493.3 ---- 28.3 102.1 130.4 -- 43.4 167.8 211.2 - - - -
- uut s.ampled -
Organic matter 4.7 86.2 91.0 18.4 4.0 17.1 21.1 16.2 4.6 25.2 29.7 14.1 - not sampled - Carbonate 12.7 157.7 170.3 34.6 12.6 44.4 57.0 U.7 16.9 75.1 92.0 43.7 - not sampled - Siliceous 27.0 205.0 232.0 47.0 11.7 40.6 52.3 40.5 21.9 67.5 89.5 42.2 - not' sampled - i a h ) 3rd Quarter
' Dry weight - not sampled - - not sampled - 75.4 252.5 327.9 - - - -
33.9 262.8 296.7 ---- Organic matter - not sampled - - not sampled - 5.7 30.3 36.0 11.0 1.8 60.2 62.2 20.9
>_s) Carbonate - not sampled - - not sampled - 21.7 129.6 151.3 4. 2 16.6 88.6 105.2 35.5
' -nt sampled - - not sampled - 48.0 92.6 140.6 42.8 15.5 114.0 129.5 43.6 Siliceous 4th Quarty Dry weight 105.0 158.1 263.1 ----
- not sampled - 27.7 167.5 195.2 ----
32.6 431.6 464.2 ---- Organic matter 7.8 21.9 29.8 11.3 - not sampled - 2.8 27.4 30.2 15.4 3.0 62.0 65.0 14.0 Carbonate 46.3 81.8 128.1 48.7 - not sampled - 10.5 71.4 82.0 41.0 15.6 184.7 200.4 43.2
, Siliceous 50.9 54.4 105.2 40.0 - not sampled - 14.5 68 7 83.1 42.6 14.0 184.9 198.8 42.8 TN)
CN
- ~
- TRAP 11 g/m . day 24 Hours 3 Dayn 5 Days 90 Days
% % % %
Dry vt. Dry vt. Dry vt. Dry vt. Ist Quarter >6 b < 6 3p Tetei Total > 6 3u <63u Total Total >63p <63u Total Total >f 3u <63u Tetal Total Dry weight 37.9 81.4 114.3 --- 41.7 186.1 227.7 ---- 26.2 273.2 299.3 ---- 10.5 92.3 102.8 ---- Organte matter 3.A 20.1 21.8 20.0 6.5 28.4 36.9 15.3 4.4 17.3 41.8 14.0 1.0 15.5 16.5 16.0 Carbonate 3.6 21.4 25.0 20.9 14.6 87.2 101.8 44.8 10.6 131.7 142.4 47.5 4.4 40.4 44.8 43.7 Siliceous 30.5 19.9 70.5 59.1 20.6 70.5 91.0 39.9 11.2 104.2 115.I 38.5 5.1 36.4 41.5 40.3 2nd Quarter Dry weight 44.n 1139.4 1183.4 ---- 36.1 101.I 137.2 ---- 41.4 149.2 10C.4 ----
- not nampled -
Organic matter 7.9 1Al.9 189.8 16.0 1.6 IR.3 19.9 14.5 6.0 30.3 36.4 19.1 - not nampled -
# O Carbonate 18.3 4AR.I 506.4 42.8 16.5 41.4 57.9 42.1 15.9 51.3 67.3 35.3 - net sampled -
Siliceou, 17.8 169.4 487.2 41.2 18.0 41.4 59.4 43.4 19.5 67.6 86.9 45.6 - not sampled - I- - - -) G
\
}3rdQuarter I
~, a -
Dry weight 61.2 148.1 209.3 ---- 24.0 174.9 198.9 ---- 26.2 148.0 174.2 ---- 12.6 204.5 217.1 ---- d t>- I Organic matter 5.0 22.6 28.6 13.6 3.7 27.7 31.4 15.8 3.8 21.2 25.0 14.3 1.4 46.4 47.8 22.0 Carbenste 14.4 69.7 84.0 40.3 9.9 79.6 89.5 45.0 7.7 68.0 75.7 43.4 5.5 67.4 72.9 13.7 Sillecou, 40.9 55.8 96.7 46.1 10.4 67.6 78.0 39.2 14.7 58.8 73.5 42.3 5.7 90.7 96.4 44.3 4th quarter Dry weight 22.7 41.5 66.2 ---- - not mampled - 7.5 23.8 31.2 ---- 4.9 113.8 118.7 ---- Organte matter 0.9 4.8 5.7 8.7 - not sampled - 0.8 4.2 5.0 15.9 0.9 24.6 25.5 21.4 Carbonate 10.8 14.9 25.7 38.8 - not nampled - 3.7 10.3 14.0 44.9 2.0 36.6 38.6 32.5 Siliceoug 11.0 21.8 34.7 52.5 - not nampled - 2.9 9.4 12.2 39.2 2.1 52.6 54.7 46.1 C
.._i b
y-O 7 3 6 O O
TRAP 16 g/m = day 24 flours 3 Days 5 Days 90 Days
% % % %
Dry wt. Dry wt. Dry vt. Dry wt. Ist Quarter > 6 3s <63u Total Total >63u <63u Total Total >63u <h3p Total T4 tal >63u <63a Total Total Dry weight 86.8 35.1 121.9 ---- 6.6 26.3 32.9 ---- 27.7 70.5 98.2 --- 2.6 79.4 82.1 ---- Organic matter 5.0 1.1 6.1 5.0 0.0 5.0 5.0 12.4 6.7 18.2 24.9 2 '> . 4 0.4 18.8 19.2 ?).s Carbonate 2.0 12.7 14.7 12.0 1.8 11.6 13.4 40.7 8.0 22.1 30.1 10. 7-. 0.5 17.7 18.1 .!.i Siliceous 79.8 21.3 101.1 83.0 4.8 9.7 14.5 46.9 13.0 30.2 43.2 41.9 1.7 42.9 44.8 54.5 2nd quarter Dry weight 13.1 522.8 535.9 ---- 12.0 45.8 57.8 ---- 14.4 53.8 68.1 - -- 8.4 592.4 600.9 ---- Organic matter 2.4 118.3 120.7 22.5 4.9 'NO 14.8 25./ 2.9 11.3 14.2 20.8 1.1 !!9.7 120.8 20.1 (, 16.6 28.7 17.4 21.4 11.4 162 4 165.0 27.5 ' Carbonate 1.3 141.2 143.5 26.8 2.8 13.7 4.0 2.6 Siliceous 8.4 263.3 271.7 50.7 4.3 22.1 26.4 45.6 7.5 25.1 .5 4i.8 4.7 310.3 315.1 52.4 . ,% h -) 3rd Quarter I ' ' , Dry weight 54.4 178.3 232.7 ---- 60.5 194.4 254.9 ---- 31.5 126.4 157.9 ---- 7.7 323.5 331.2 ---- y Organic matter 8.7 33.4 42.1 18.1 8.0 32.4 40.4 15.8 6.4 24.5 30.9 19.6 1.0 81.3 82.3 24.9 Carbonate 12.0 58.7 70.8 30.5 8.2 76.5 84.6 33.2 6.0 42.0 48.0 10.5 2.5 67.6 70.0 21.2
'
Siliceous 33.7 86.2 119.8 51.4 44.3 85.5 129.9 51.0 19.1 59.9 79.0 49.9 4.2 74.6 178.9 53.9 h 4th qu.erter t 6.1 216.9 223.0 ----
- not sampled - - not sampled - 33.0 137.2 170.2 - --
Dry weight
- not sampled - 5.5 22.9 28.4 16.7 1.2 45.1 46.3 20.8 Organic matter - not sampled -
- not sampled - 9.7 52.2 61.9 3b.4 1.0 60.4 61.4 27.6 Carbonate - not sampled -
- not sampled - - not 6ampled - 17.8 62.1 79.9 46.9 3.9 111.4 115.3 51.6 3 Siliceous
,
1
TRAP 18 g/m . day 24 I!c.ir s 3 Days 5 Days 90 Pays I % 2 I Dry vt. Dry vt. Dry vt. Dry vt. Ist Quarter " 3u <63u Total Total >63u <63u Total Total St3u < 6 3u Total Total >63u <63u Total Total Dry weight not sampled - 18.3 52.3 70.6 ---- 10.6 33.9 44.5 ---- 6.2 87.0 93.3 ---- Organic matter nnt sampled - 2.1 9.2 11.3 16.0 1.8 7.7 9.5 21.3 0.7 22.0 22.7 24.3 Carbonate not sampled - 2.3 20.2 22.6 11.8 2.4 8.9 11.4 25.5 0.9 21.7 22.5 24.1 Siliceous not nampled 13.9 22.9 36.7 52.2 6.4 17.3 23.6 53.2 4.6 43.3 48.1 51.6 2nd Quarter Dry weight 10J 4 4. 7 4 8 '. . ! ---- 17.7 58.0 75.8 ---- 9.7 32.5 42.2 ---- 7.4 322.5 129.9 ---- 6.7 96.2 102.9 21.2 3.4 12.6 16.1 21.2 1.9 6.6 8.5 20.2 0.8 72.7 73.6 22.3 Organic matter
- 3. 0 128.1 131.1 27.1 5.9 18.8 24.7 32.5 1.8 11.0 12.8 30.3 1.9 87.6 89.5 27.1 Carbonate 10.1 2 '.0. 4 250.1 51.7 8.4 26.6 35.0 46.3 6.0 14.9 20.9 49.5 4.7 162.2 166.8 50.6 Siliceous 3rd Quarter i Dry weight not sampled - 27.8 297.7 3? ----
28.9 213.6 244.5 ---- 10.9 586.5 597.5 ---- y t not sampled - 4.6 67.6 72.2 22.2 5.8 40.7 46.4 19.0 1.4 114.9 116.3 19.5 Organic matter not ampled - 5.6 85.0 90.5 27.8 5.9 92.5 98.4 40.3 2.1 173.7 175.8 29.3 Carborate not sampled - 17.6 145.1 162.8 50.0 17.2 12.4 99.7 40.7 7.4 297. 305.4 51.2 Siliceous 4th Outrter Dry weight not sampled - - not nampled - 10.8 649.9 660.7 ---- 8.5 281.2 289.7 ---- Organic matter not sampled - - not nampled - 1.6 121.9 129.6 19.6 1.7 67.0 68.7 23.7 Carbonate not sampled - - not nampled - 1.6 213.1 214.8 32.5 1.3 57.3 58.6 20.2 O Siliceous not sampled - - not sampled - 7.6 308.8 316.3 47.9 5.5 156.9 162.4 56.1
.,
N G r. 9 9 e
TRAP 20 g/m day 24 Hours 3 Days 5 Davs 90 Days
% % % %
Dry wt. Dry wt. Pry wt. Dry vt. Ist Quarter >63u <63u Total Total >63u < 6 3u Total Total >63u <63u Total Total >63u <63; Total Total Dry welght 8.2 23.9 32.1 ---- 21.P 68.4 90.3 ---- 48.0 313.0 361.0 ---- 12.0 160.1 172.1 ---- Organic matter I.6 6.5 8.1 25.2 3.5 10.5 14.0 15.5 9.7 53.4 63.1 17.5 1.2 32.1 33.2 19.3 Carbonate 1.4 8.2 9.6 29.8 5.1 30.1 35.3 39.1 16.9 120.5 137.4 38.0 4.8' 54.7 59.4 34.6 Siliceous 5.2 9.2 14.4 45.0 13.2 27.8 41.0 45.4 21.4 139.1 160.5 44.5 6.0 73.3 19.5 46.1 2nd Quarter Dry welght 47.7 1491.2 1538.9 ---- 35.3 158.8 194.1 ---- 13.3 180.8 194.1 ---- 14.7 600.4 675.0 ---- Organic matter 10.0 329.3 339.4 22.1 5.9 25.5 31.3 16.1 2.4 30.8 33.2 17.1 1.9 118.4 120.2 17.8 Carbonate .4.0 409.7 423.7 27.5 14.0 68.2 82.2 42.3 4.7 68.4 73.1 U.8 6.7 254.7 261.4 38.7 Sillceous 23.7 752.2 775.8 50.4 23.5 65.1 80.6 41.6 6.2 81.6 87.8 45.1 6.1 287.3 293.4 43.5 3rd Quarter I w Dry weight 86.8 452.2 539.0 ---- 112.9 724.2 837.2 ---- 75.3 308.7 384.1 - - - - -
- not a.ampled - u a
Organic matter 14.1 78.8 92.9 17.2 18.2 100.9 119.1 14.2 15.3 55.7 71.0 18.5 - not sampled - Carbonate 35.7 175.7 211.3 39.1 41.4 326.0 367.4 43.9 22.6 110.5 133.1 14.6 - not sampled - Sillceous 37.0 197.8 234.8 43.7 53.3 297.3 350.7 41.9 37.4 142.5 180.0 .'6.9 - not sampled - 4th Quarter Dry weight - not sampled - - not sampled - - not sampled - - not sampled - N Organic matter - not sampled - - not sa vied - - not sampled - - not sampled - N Carbonate - not sampled - - not aampled - - not sampled - - ror sampled -
.
S!!!ceous - not sampled - - not sampled - - not sampled - - not sampled -
@
L9
TRAP 21 g/m . day 24 Hours 3 Days 5_ Day 90 Days I 1 % % Dry vt. Dry vt. Dry vt. Dry vt. Ist Q arter >A4 < 6 3p Tc+at Total >63u <63u Total Total >63u <63u Total Total >63u <63u Tetal Total Dry weight 11.4 .' R . 4 39.9 ---- 9.8 105.9 115.7 ---- 31.0 280.5 311.5 ---- 7.4 134.3 141.7 ---- Orranic matter 1.8 7. 2 11.0 27.7 1.0 19.1 20.2 17.4 6.4 50.6 57.0 18.3 1.4 29.1 30.5 21.5 Carbonate 0.8 12.0 12.8 32.3 2.7 41.8 44.4 38.4 10.7 99.9 110.6 35.5 3.0 39.0 42.0 29.6 Siliceous 6.8 9.2 16.1 40.0 6.1 45.0 51.1 44.2 13.9 130.0 143.9 46.2 3.0 66.2 69.2 48.9 2nd Quarter Dry weight 26.3 1254.5 1128u.8 ---- 51.8 174.1 225.9 ---- 13.7 257.5 271.1 ---- 31.6 801.5 833.1 ---- Organic matter 6.2 210.5 276.8 21.6 9.3 32.3 41.6 1R.4 2.1 48.9 51.0 1R.8 2.8 170.8 173.5 20.8 Carbonate 6.9 l' 4. 8 371.8 28.9 19.6 64.6 R4.2 37.3 4.9 BR.9 93.8 34.6 16.6 236.6 2 $ 3." 2 30.5 S111ecous 13.2 619.2 632.2 49.5 22.9 77.2 100.1 44.3 6.7 119.7 126.3 46.6 12.3 394.1 406.4 48.7 3rd Quarter i 71.9 u Dry velght 2H2.2 354.1 ---- 77.9 3R3.8 461.8 ---- 65.5 390.0 455.5 ---- 21.9 851.5 873.5 ---- cn i Organic matter 13.7 49.9 63.6 17.9 14.7 69.9 84.6 18.3 9.9 61.9 71.8 15.7 2.7 155.5 158.2 18.1 Carbonate 29.7 112.4 142.1 40.1 20.1 143.2 163.3 35.4 18.9 158.4 177.3 38.9 10.5 286.2 296.7 34.0 Siliceoug 2 8 . '+ 119.9 4R.4 42.0 43.1 170.7 213.9 46.3 36.7 169.7 206.4 45.4 8.7 409.8 418.6 47.9 4th quarter Dry weight 18.9 10.2 29.1 ---- - not nampled - 8.3 158.7 167.0 ---- - not sampled - Organic matter 0.6 4.1 4.7 15.9 - not sampled - 1.7 33.5 35.3 21.1 - not nampled - Carbonate 5.5 6.1 11.7 40.2 - not sampled - 3.1 48.8 51.9 31.1 - not nampled - Siliceous 12.R 0.0 12.8 43.9 - not sampled - 3.4 16.4 79.8 47.8 - not sampled - .0 . - . , e.-e O' C.' O O O
a TRAP 24 g/m . day 3 Days 5 Days 90 Days 24 Hours
% %
%
Dry wt. Isy wt. Dry wt. Dry wt. Total Total >639 <63p Total Total >63p gg Total dtd >63p <63u Total Total Ist Quarter >63s <tiu Dry weight 21.8 23.7 47.5 ---- 2.6 25.2 27.8 ---- 5.9 51.3 57.2 -- 1.2 58.5 59.7 ---- Organic matter 4.1 6.1 10.2 21.5 0.8 4.9 5.7 20.7 0.9 8.9 9.9 li.) 0.0 12.2 12.2 20.5 Carbonate 0.2 11.3 !!.6 24.3 0.2 10.8 11.1 39.8 ?.7 21.5 24.2 4/.3 0.5 18.5 18.9 31.6 Siliceous 17.5 8.3 30.1 54.2 1.6 9.5 11.0 39.5 2.3 20.9 23.1 40.4 0.7 27.8 28.6 47.9 2nd Quarter Dry weight 32.2 1024.0 1056.2 ---- 27.3 91.3 118.6 ---- 26.5 128.1 I47.5 - 9.4 477.6 487.0 ---- Organic matter 7.6 170.6 178.2 16.9 4.9 16.4 21.2 17.9 4.3 24.1 28.4 1 .1 1.6 116.1 117.7 24.2
,
Carbonate 10.1 373.7 383.8 36.4 12.2 36.4 48.6 40.9 10.7 44.4 55.1 11. 1 4.2 126.H 131.1 26.8 g a a 14.5 479.7 494.2 46.7 10.2 38.5 48.8 41.2 11.5 52.6 64.0 41.4 3.6 2 34. 7 238.2 49.0 Q'CJ D ' Siliceous h 3rd Quarter W~ Dry weight 54.3 263.2 317.5 ---- 4h.7 240.4 287.1 ---- 27.9 247.8 275.7 - - - 15.8 791.5 807.2 ---- L y
- 10.6 48.7 59.3 18.7 9.1 40.5 49.6 17.3 5.9 43.1 49.0 1/.H 2.2 111.1 113.3 I4.0 Organic matter Carbonate 22.6 104.6 127.3 40.0 16.8 135.4 '52.1 53.0 8.9 94.1 102.9 31. 1 8.2 344.5 352.7 43.7 Siliceous 21.0 109.9 130.9 41.3 20.8 64.8 85.4 29.7 13.1 110.6 123.8 44.9 5.4 335.9 341.2 42.3 4th quarter 123.4 309.9 433.2 ---- - not sampled - 37.3 135.2 172.5 - - - -
11.0 138.8 149.8 ---- Dry weight 22.2 60.2 82,4 19.0 - not sampled - 5.1 21.3 26.4 1, . I 1.3 29.6 30.9 20.7 Organic matter 51.0 126.2 177.2 40.9 - not sampled - 17.7 61.5 79.3 4e .0 4.5 43.4 47.9 32.0
-) Carbonate
~
50.2 123.5 173.7 40.1 - not sampled - 14.5 52.4 66.8 1.. 7 5.2 65.8 71.0 47.3 S!!!ccous
-o m -!
O APPENDIX C Results of Regression Analysis of Resuspension Curves and Resultant t Parameters 100 O O
<n f zos
APPENDIX C , DRY WEIGHT 1 4 9 90 a b r U 100 rs) Trap A 87 235 741 9,446 71.33 1.0660 .9947 32.95 Trap B 249 490 1,138 13,555 184.67 .9141 .9865 12.27
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Trap C 175 271 '?: 129.02 . 3 5 '+ 0 . 9 ? ? 5 15.31 Trap E 110 334 339 6,324 97.23 .9114 .9961 24.75 Trap F 407 894 1,841 14,608 343.77 .8105 .9945 5.23 Trap 2 132 319 680 6,014 112.74 .8624 .9957 20.88 Trap 3 397 810 1,815 19,306 305.92 .8857 .9891 s. 79 Trap 6 243 545 1,409 15,286 192.94 .9438 .9932 11.96 Trap 9 211 740 2,013 33,445 179.72 1.3403 .9974 14.35 Trap 11 298 795 2,092 26,813 243.08 1.0199 .99t8 10.04 Trap 13 395 959 1,828 13,670 350.74 .7965 .9970 4.97 Trap 16 297 643 1,261 26,314 201.78 1.0204 .9798 12.07 Trap 18 484 956 2,196 28,731 352.12 .9339 .9854 6.23 Trap 20 703 1,824 3,389 37,696 586.23 .8950 .9937 3.32 Trap 21 426 1,229 2,772 52,676 328.12 1.0879 .9920 8.05 Trap 24 464 898 1,714 32,164 309.70 .9677 .9760 7.46
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O ORGANIC MATTER 1 4 9 90 a b r '100(hrs) Trap A 16 44 142 2,201 12.76 1.1182 .9937 151.29 Trap B 50 95 217 2,904 35.60 .9308 .9834 72.79 Trap 2 40 78 141 1,933 28.42 .8852 .9807 99.41 Trap E 21 50 106 1,590 15.82 .9821 .9892 156.87 Trap F 56 152 331 4,511 45.38 .9903 .9939 53.30 Trap 2 34 73 140 1,397 26.82 .8444 .9905 114.07 Trep 3 79 152 298 4,002 56.49 .8962 .9818 45.39
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Trap 6 5/4 107 272 3,613 39.10 .9637 .98C1 63.59 Trap 's 38 121 298 5,865 30.09 1.1369 .9945 69.01 Trap 11 46 267 443 4,475 52.31 .9991 .9960 45.91 Trap 13 62 148 284 2,708 51.87 .8514 .9939 33.15 Trap 16 56 117 240 5,679 36.65 1.0531 .9773 67.03 Trap 18 103 203 445 6,141 73.95 .9343 .9839 33.15 Trap 20 147 311 590 6,803 188.50 .7434 .9622 10.23 Trap 21 89 235 504 10,284 65.34 1.0751 .9884 35.66 Trap 24 83 159 301 5,852 54.56 .9731 .9751 44.73 O o/ vu
CARBONATE 1 4 9 90 a b r '100(hrs) Trap A 21 53 172 1,826 17.21 1.0218 .9942 134.32 Trap B 82 170 396 4,205 63.57 .8980 .9898 39.74 96 2,266 30 31 9107 - oc1o ^ Trap C 33 134 - Trap E 40 76 144 1,600 29.85 .8400 .9836 101.24 Trap F 65 166 371 2,788 58.53 .8477 .9980 45.14 Trap 2 44 96 204 1,585 37.25 .8121 .9946 80.96 Trap 3 125 268 687 5,661 103.71 .8692 .9933 23.02 Trap 6 59 149 441 3,512 52.18 .9293 .9957 48.33 Trap 9 84 302 902 12,698 74.63 1.1307 .9983 31.09 Trap 11 109 331 894 10,903 92.26 1.0394 .9973 25.94 Trap 13 160 410 784 5,004 150.23 .7703 .9990 14.15 Trap 16 76 191 393 6,776 57.01 1.0155 .9284 41.74 Trap 18 131 269 691 7,705 100.09 .9319 .9893 23.98 Trap 20 215 700 1,274 14,265 194.60 .9344 .9974 11.77 Trap 21 135 348 890 16,871 99.79 1.0973 .9903 24.05 Trap 24 175 387 714 11,863 126.01 .9562 .9829 18.85 i L yyy y, m
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O SILICEOUS 1 4 9 90 a b r *100 rs) Trcp A 50 138 427 5,419 41.37 1.0644 .9952 55.00 Trap B 117 225 525 6,446 86.47 .9179 .9853 28.12 Trap C 97 198 397 4,050 75.48 .8484 .9886 33.44 Trap E 52 122 252 3,265 40.40 .9378 .9903 63.09 Trap F 286 575 1,138 7,308 245.01 .7347 .9943 7.09 Trap 2 55 151 336 3,032 48.83 .9029 .9979 53.09 Trap 3 190 386 827 9,641 143.28 .8950 .9873 16.06 Trap 6 131 289 696 8,160 101.66 .9411 .9908 23.58 Trap 9 90 316 813 14,882 74.77 1.1505 .9968 30.90 Trap 11 144 346 903 11,585 113.01 .9982 .9924 21.23 Trap 13 172 401 760 5,958 148.92 .7983 .9956 14.57 Trap 16 164 335 628 13,874 107.72 1.0114 .9755 22.30 Trap 18 250 485 1,060 14,889 177.91 .9346 .9831 12.96 Trap 20 342 814 1,528 16,630 277.62 .8761 .9919 7.48 Trap 21 203 568 1,263 25,406 152.70 1.0918 .9905 16.29 Trap 24 207 352 700 14,449 129.,01 .9756 .9690 18.49 0
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A P P E :: DIX D Results of Grain Size Analyses for Substrate Dredge Samples _ ., n ~~7 .'
APPENDIX D Mean Grain Size O Sorting 0 Skewness 0 Kurtosis O CONTROL BASINS Station B lst Quarter 2.65 1.01 0.18 1.67 2nd Quarter 2.92 1.42 0.18 1.83 3rd Guarter 2.47 1.20 0.40 1.97 4th Quarter 2.78 1.57 0.38 2.60 Pooled 2.73 1.30 0.25 1.91 Station E lst Quarter 2.41 1.18 -0.08 1.50 2nd Quarter 2.61 1.33 0.13 1.80 3rd Quarter 2.29 1.34 0.08 3.63 4th Quarter 2.58 1.29 0.23 2.04 Pcoled 2.47 1.29 0.08 1.78 BASIN 1 Station A lst Quarter 2.97 1.21 0.29 1.76 2nd Quarter 2.87 1.14 0.25 1.70 3rd Quarter 2.88 1.39 0.52 1.53 4th Quarter 3.47 1.44 0.48 1.20 Pooled 3.08 1.33 0.39 1.61 Station C lst Quarter 3.09 1.08 0.22 2.02 2nd Quarter 3.00 1.27 0.51 1.66 3rd Quarter 3.25 1.33 0.4E 1.82 4th Quarter ns ns ns ns Pooled 3.10 1.24 0.40 1.72 Station F 1st Quarter 3.17 1.31 0.31 1.73 2nd Guarter 2.67 1.30 0.55 1.72 3rd Quarter 2.47 0.94 0.41 1.66 4th Quarter 3.95 1.48 0.42 0.84 Pooled 3.18 1.38 0.42 1.43 Station 2 1st Quarter 2.70 1.00 0.15 1.71 2nd Quarter 3.33 . 1.43 0.46 1.39 3rd Quarter 3.41 1.45 0.53 1.12 4th Quarter 3.45 1.53 0.57 0.86 Pooled 3.27 1.41 0.48 1.62 LJ n-Ib $f
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Mean Grain Size 6 Sorting @ Skewness 0 Kurtosis 0 BASIN 2A Station D lst Quarter 2.92 1.10 0.30 1.83 2nd Quarter 2.94 1.11 0.26 1.70 3rd Quarter ns ns ns ns 4th Quarter as ns ns ns Pooled 2.93 1.11 3.23 1.77 Station 3 1st Quarter 2.42 1.33 0.01 1.53 2nd Quarter ).31 1.79 0.40 0.79 3rd Quarter 2.97 1.86 0.30 1.09 4th Quarter 2.58 1.45 0.27 1.71 Pooled 2.67 1.58 0.23 1.56 Station 6 1st Quarter 2.73 0.88 0.17 1.73 2nd Quarter 2.94 1.12 0.37 1.81 3rd Quarter 2.74 0.94 0.22 1.71 4th Quarter 2.60 1.04 0.64 3.49 Pooled 2.70 0.98 0.34 1.75 BASIN 3 Station 7 1st Quarter 2.92 1.13 0.24 1.71 2nd Quarter 3.33 1.37 0.35 1.59 3rd Quarter 3.05 1.28 0.34 1.64 4th Quarter 2.70 1.13 0.61 2.36 Pooled 3.01 1.25 0.40 1.59 Station 8 1st Quarter 2.33 1.40 0.08 1.38 2nd Quarter 2.67 1.71 0.41 1.55 3rd Quarter 2.76 1.70 0.23 1.44 4th Quarter 2.24 1.49 0.03 1.40 Pooled 2.50 1.58 0.21 1.46 Station 9 1st Quarter 3.13 1.33 0.47 1.91 2nd Quarter 3.26 1.42 0.47 1.58 3rd Quarter 3.16 1.41 0.53 1.59 4th Quarter 2.58 1.04 0.58 2.61 Pooled 3.00 1.31 0.56 1.81
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Mean Grain Size @ Sorting 0 Skewness 0 Kurtosis O Station 10 1st Quarter 3.19 1.35 0.30 2.28 2nd Quarter 3.52 1.43 0.49 1.03 3rd Quarter ns ns ns ns 4th Quarter ns ns ns ns Pooled 3.35 1.39 0.39 1.65 Station 11 1st Quarter 3.03 1.14 0.17 2.04 2nd Quarter 3.14 1.29 0.28 1.E7 3rd Quarter 2.95 1.66 0.36 1.66 4th Quarter 3.29 1.53 0.31 1.54 Pooled 3.12 1.42 0.28 1.71 Station 12 1st Quarter 3.16 1.13 0.40 2.15 2nd Quarter 3.31 1.53 0.53 1.00 3rd Quarter ns ns ns ns 4th Quarter ns ns ns ns Pooled 3.26 1.38 0.46 1.71 , Station 13 1.75 1.65 0 1st Quarter 0.31 1.02 2nd Quarter 2.54 2.11 0.31 0.83 3rd Quarter 2.38 2.00 0.32 1.05 4th Quarter 2.58 2.06 0.31 0.99 Pooled 2.35 1.99 0.33 1.03 Station 14 1st Quarter 2.43 2.02 0.21 0.94 2nd Quarter 2.29 1.98 0.38 1.01 cd Quarter 2.48 2.12 0.31 0.80 4th Quarter 2.47 2.05 0.32 1.69 Pooled 2.41 2.05 0.32 0.95 BASIN 2B Station 16 1st Quarter 2.53 1.10 0.27 1.82 2nd Quarter 2.77 1.35 0.42 1.59 3rd Quarter 2.75 0.99 0.29 1.79 4th Quarter 2.57 0.96 0.53 2.36 Pooled 2.61 1.08 0.36 1.87 O
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Mcan Crain Size $ Sorting Skewness $ Kurtosis $ Station 18 1st Quarter 2.77 0.91 0.21 1.70 2nd Quarter 2.70 0.99 0.33 1.73 3rd Quarter 2.64 0.94 0.31 1.81 4th Quarter 2.43 0.83 0.50 2.89 Pooled 2.64 0.95 0.39 1.81 BASIN 4~ Station 20 lat quart:r 2.32 1.52 '.23 1.27 2nd Quarter 3.76 1.42 0.51 0.92 3rd Quarter 3.65 1.54 0.54 0.83 4th Quarter ns ns ns ns Pooled 3.62 1.52 0.42 1.00 Station 21 1st Quarter 2.13 1.56 0.16 1.38 2nd Quarter 1.94 1.65 0.21 1.27 3rd Quarter 2.62 1.84 0.38 1.34 4th Quarter 2.60 1.83 0.32 1.45 Pooled 2.55 1.85 0.30 1.29
- Station 22 1st Quarter 2.99 1.19 0.22 1.94 2nd Quarter 1.94 1.65 0.21 1.27 3rd Quarter 2.62 1.84 0.38 1.34 4th Quarter 2.60 1.83 0.32 1.45 Pooled 2.55 1.85 0.30 1.29 BASIN 5 Station 24 1st Quarter 2.21 1.31 0.03 1.32 2nd Quarter 2.46 1.50 0.21 1.68 3rd Quarter 3.06 1.68 0.33 1.41 4th Quarter 2.94 1.63 0.31 1.52 Pooled 2.68 1.58 0.21 1.56 Station 25 1st Quarter 1.87 1.59 0.19 1.13 2nd Quarter 2.60 1.16 0.21 2.00 3rd Quartar 3.07 1.31 0.37 1.93 4th Quarter 3.03 1.36 0.45 2.00 Pooled 2.69 1.47 0.20 1.94 e
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Mean Grain Size O Sorting 0 Skewness 0 Kurtosis - Station 26 1st Quarter 2.72 0.97 0.20 1.83 2nd Quarter 2.46 1.32 0.35 1.32 3rd Quarter 2.61 1.61 0.61 1.46 4th Quarter 2.58 1.32 0.42 1.54 Pooled 2.60 1.35 0.37 1.46 S_tation 27 1st Quarter 2.23 1.27 -0.05 1.28 2nd Quarter ns ns ns as 3rd Quarter 3.43 1.76 0.27 0.85 4th Quarter 3.07 1.98 0.26 0.88 Pooled 2.67 1.71 0.19 1.36 O O
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Results of Organic Matter and Carbonate Analyses for Dredge and Sediment Trap Samples s a s
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s APPENDIX p. Dredge Dredge Trap Trap
%0.M. %C0 0.M. ".20 3 3 Station A lst Quarter 4.06 10.1 19.3 13.4 2nd Quarter 2.94 12.4 20.1 21.4 3rd Quarter 3.50 13.3 28.9 12.4 4th Quarter 5.69 28.9 20.1 31.9 Average 4.05 16.2 22.1 19.8 Station B 1st Quarter 3.48 10.5 26.1 26.8 2nd Quarter 3.53 12.9 19.4 30.7 3rd Quarter 3.36 21.0 27.0 26.4 4th Quarter 3.31 12.4 18.5 37.1 Average 3.42 14.2 22.8 30.3 Station C 1st Quarter 6.04 11.7 24.2 18.2 2nd Quarter 3.60 8.3 22.0 35.9 3rd Quarter 3.20 15.9 27.1 17.7 4th Quarter ns ns ns ns Average 4.28 12.0 24.4 23.9 Station D 1st Quarter 3.65 20.1 2nd Quarter 3.02 14.1 ---- ----
3rd Quarter ns ns = ---- 4th Quarter ns ns Average 3.34 17.1 Station E 1st Quarter 3.46 13.9 26.0 19.6 2nd Quarter 3.49 10.9 25.1 23.4 3rc Quarter 2.72 11.4 28.4 15.5 4th Quarter 3.35 10.8 19.8 40.3 Average 3.26 11.8 24.8 24.7 Station F 1st Quarter 4.26 10.6 17.7 19.6 , 2nd Quarter 2.88 4.0 21.6 29.6 3rd Quarter 2.42 10.6 50.4 10.0 4th Quart'er 8.16 34.1 21.3 23.1 Average 4.43 9.8 27.8 20.6
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%0.M. %C0 .0.M. %C0 3
3 Station 2 1st Quarter 4.64 8.9 21.4 19.1 2nd Quarter 2.94 8.6 20.7 33.4 3rd Quarter 3.73 14.0 28.3 21.4 4th Quarter 6.05 16.8 22.7 25.8 Average 4.34 12.1 23.3 24.9 Stati:n 3 1st Quarter 5.31 24.1 15.7 40.3 2nd Quarter 4.95 28.7 18.1 34.8 3rd Quarter 4.11 30.8 23.0 27.3 4th Quarter 3.45 21.3 23.2 21.8 Average 4.46 26.2 20.0 31.1 Station 6 1st Quarter 3.06 7.2 23.2 23.0 2nd Quarter 3.36 3.4 21.7 32.8 3rd Quarter 2.74 11.0 25.5 17.3 4th Quarter 3.54 11.3 24.4 19.8 Average 3.18 8.2 23.7 23.2 Station 7 1st Quarter 3.92 19.1 2nd Quarter 3.40 18.4 3rd Quarter 2.15 20.5 ---- 4th Quarter 3.46 19.0 ---- ---- Average 3.23 19.3 5tation 8 1st Quarter 3.97 35.8 2nd Quarter 3.55 31.9 --- 3rd Quarter 4.86 34.9 ---- 4th Quarter 3.58 26.0 Average 3.99 32.1 Statica 9 1st Quarter 4.43 25.8 22.0 29.3 2nd Quarter 3.00 17.8 19.8 31.6 3rd Quarter 2.37 20.6 13.0 47.8 4th Quarter 4 J3 23.3 21.4 30.6 Average 3.46 21.9 19.1 34.8 1
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%0.M. %C0 %0.M. %C0 3 3 Station 10 1st Quarter 4.56 31.9 ----
2nd Quarter 4.08 25.7 ---- ---- 3rd Quarter ns ns 4th Quarter ns ns Average 4.32 28.8 Station 11 1st Quarter 4.02 30.3 14.4 42.1 2nd Quarter 3.71 21.2 ns ns 3rd Quarter 2.97 34.2 20.9 35.5 4th Quarter 3.93 21.8 14.0 43.2
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Average 3.66 26.9 16.4 40.3 Station 12 1st Quarter 3.77 21.4 2nd Quartee 6.89 19.3 ---- , 3rd Quarter ns ns 4th Quarter ns ns Average 5.33 20.4 Station 13 1st Quarter 6.13 44.4 16.0 43.7 2nd Quarter 7.97 46.0 ns ns 3rd Quarter 2.52 49.1 22.0 33.7 4th Quarter 5.77 42.1 21.4 32.5 Average 5.60 45.4 19.8 36.6 Station 14 1st Quarter 6.13 41.7 ---- 2nd Quarter 4.65 38.0 3rd Quarter 4.44 43.8 ---- 4th Quarter 3.98 41.6 ---- Average 4.80 41.3 Station 16 1st Quarter 3.44 10.1 23.4 22.1 2nd Quarter 3.97 9.6 20.1 27.5 3rd Quarter 2.24 13.3 24.9 21.2 4th Quarter 2.87 21.4 20.8 27.6 Average 3.13 11.4 22.3 24.6 0 9s M
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%0.M. %C0 0.M. %C0 3 3 Station 18 1st Quarter 3.22 7.1 24.3 24.1 2nd Quarter 2.57 6.8 22.3 27.1 3rd Quarter 1.79 8.1 19.5 3.3 4th Quarter 2.79 9.8 23.7 20.2 Average 2.59 7.9 22.5 25.2 Statien 20 1st Quarter 9.16 40.4 19.3 34.6 2nd Quarter 6.09 29.2 17.8 38.7 3rd Quarter 4.90 1.0 ns ns 4th Quarter ns ns oc ns Average 6.72 34.8 18.6 36.7 Station 21 1st Quarter 5.78 47.9 21.5 29.6 2nd Quarter 6.17 51.2 20.8 30.5 3rd Quarter 4.70 62.7 18.1 34.0 4th Quarter 5.65 50.0 ns ns Average 5.58 53.0 20.1 31.4 Station 22 1st Quarter 6.64 26.4 2nd Quarter 3.54 22.6 3rd Quarter 3.33 28.5 ----
4th Quarter 3.64 23.5 ---- Average 4.29 25.3 Station 24 1st Quarter 3.76 18.2 20.5 31.6 2nd Quarter 2.91 21.8 24.2 26.8 3rd Quarter 2.86 47.4 14.0 43.7 4th Quarter 3.69 25.3 20.7 32.0 Average 3.31 28.2 19.9 33.5 Station 25 1st Quarter 5.11 31.3 2nd Quarter 3.50 19.4 3rd Quarter 2.42 20.1 4th Quarter 4.27 21.2 ---- Average 3.83 23.0
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T - Dredge Dredge Trap Trap
%0.M. %C0 0.M. %C0 3 3 Station 26 1st Quarter 4.14 17.7 ----
2nd Quarter 4.44 29.1 3rd Quarter 4.16 37.8 - 4th Quarter 3.63 30.2 ---- Average 4.09 28.7 Station 27 1st Quarter 3.45 25.2 ---- = 2nd Quarter ns ns ---- 3rd Quarter 4.62 39.5 - 4th Quarter 7.12 38.0 Average 5.06 34.2 O . O
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