NUREG/CR-3145, Public Release for Unclassified Formal Nrc,Consultant & Contractor Repts Re NUREG/CR-3145, Geophysical Investigations of Western Ohio-Indiana Region

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Public Release for Unclassified Formal Nrc,Consultant & Contractor Repts Re NUREG/CR-3145, Geophysical Investigations of Western Ohio-Indiana Region
ML20198H132
Person / Time
Issue date: 05/20/1986
From: Beratan L
NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES)
To:
Shared Package
ML20198H114 List:
References
CON-NRC-04-81-195-04, CON-NRC-4-81-195-4, RTR-NUREG-CR-3145 PRUR-860520, NUDOCS 8605300127
Download: ML20198H132 (4)
v • d • e


Text

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3. TITLE AND SUBTITLE iSiste en tuti es sac.irn on asumierer Geophysical Investigations of the Western Ohio - Indiana Region

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4. AUT HO RS ur more un ne an.or omme rurst e rhor rocooseef be end osners 't H.N. Pollack, D.H. Christensen and A Wele
5. N AME OF CONTR ACTOR V AtLING ADDRE$$ % mees swte e6 to coon Department of GeoiAdogica streer ietSciences TE LE(pwoNT 313) NQ.

University of Michigan Ann Arbor, MI 48109 736-4069

6. D AT E M ANUSCRIPT 7. N RC PROGR AM SPONEOR TECHNICAL VONt TOM l T F LEs+4GNE NO.

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Region - Annual Report (October 1984 - September 1985) e O.Ta agroaf Co.*LITED t .o'e f . TEAA

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Earthquake activity in the Western Ohio - Indiana region has been monitored with a precision seismograph networ'k consisting of nine stations located in west-central Ohio and four stations sited in Iridiana. The nine Ohio stations have been upgraded by replacing geophones and VC0/ amplifiers with new, and more reliable components. Seven local and near-regional earthquakes have been recorded during this report period, ranging in magnitude from 1.4 to 3.0 m

' Ohio, and three were located well outsNE. the' array,Of the oneseven events, four near Chicago, Illinois, occurred one in wes in northern Kentucky, and one in western Pennsylvania. The event which occurred near Chicago on 9 September 1985 was felt; however, only minor damage was reported. l Teleseismic P-wave arrival and residual tables have been updated to include newly acquired data. The results are substantially the same as in previous years.

Preliminary results from refraction experiments in the summer of 1984 indicate i apparent velocities of 6.67 km/sec for refracted P arrivals from the basement, 8.27 km/sec for Pn arrivals, and 3.57 km/sec for Lg arrivals.

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3. TITLE AND SUBTIT LE. IStore en tutt as shoven on documenti Geophysical Investigations of the Western Ohio - Indiana Region
4. AUTHO R$ 119 more than three name forst aurhor tolewed by ~ and others i H.N. Pollack, D.H. Christensen and J. Wele
5. N AME OF CONT R ACTOR mber and st cer city stare and era codel l V AILING ADDRESSDepartment of'4uGeological Sciences TE LE(PHONE 313) NO University of Michigan Ann Arbor, MI 48109 736-4069
6. D AT E M ANUSC RIPT 7. NRC PROGR AM SPONSOR TECHN CAL MONITOM l TE LE PHONE NO.

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9. TYPE OF DOCUMENT /Cneck appropriate bos/

Me TECHNICAL REPORT til FORVAL (2) IN TE RIV E lb CONF ERENCE PAPER til TITLE OF CONFE RENCE PAPE R

12) D ATEISI OF CONFE RENCE 131 LOCATION OF CONF E RENCE
c. OTHER ionducate r.or or stem e g. rr. eses speech. tournar art cle guide etc I 1o. SPE CI AL OtST RiBUTsON isend art cop.es to the D str turson Servoces Branch Devosson re Techortat taformeren and Docuenent Controit rSpocar soecess v unstrecr*ons such as Mene svaristne ontv as specr!*cativ acoreved tv program off.ce ~ or ' Send to arrached addressees " Surmor addressed maroong tate's for specret d*stntur.on Consonue anstrucroons on reverse or separare sheer et necesserv i 5 copies to E.G. Zurflueh, Mail Stop 1130--SS
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c. PAT E NT CLE AR ANCE DE NIE D arth Sciences Branch, DRPES' RES d P ATE NT COUNSE L'S SIGN ATURE lDATE e SIG N A TU R E Aurewiraed c onrier on otr.c a# or %#C.W'<rort lDATE

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December 1985 6 Daf t AtPORT IS5utD H.N. Pollack, R.H. Christensen and J. Welc .O.TR vt m May l 1986 7 Pt mf omus4G Omsag,2at EON hawl aNO waiti4G aDDmES$ nartal* Cases S PROJECT /Ta5amons whit huweta Department of Geological Sciences University of Michigan ...~ORGmA~T vo.am Ann Arbor, MI 48109 B8080 10 SPO450mi%G omGami2aTIO4 4awt AND MAILING aDDat15 Uarksele Cases lie Tvrt OF REPORT Division of Radiation Programs and Earth Sciences Annual Progress Report Office of Nuclear Regulatory Research '""'"'"~~'***""

U.S. Nuclear Regulatory Commission Washington, DC 20555 October 1984 -- September 1985 12 SUPPLEuthTamy esOf t5 13 at$TR ACT #A10 iseres er ' eses Earthquake activity in the Western Ohio - Indiana region has been monitored with a precision seismograph network consisting of nine stations located in west-central Ohio and four stations sited in Indiana. The nine Ohio stations have been upgraded by replacing geophones and VC0/ amplifiers with new, and more reliable components. Seven local and near-regional earthquakes have been recorded during this report period, ranging in magnitude from 1.4 to 3.0 m Ohio,andthreewerelocatedwelloutsNE.Ofthesevenevents,fouroccurredinwesternthe' array, one near Chicago, Illinois, one in northern Kentucky, and one in western Pennsylvania. The event which occurred near Chicago on 9 September 1985 was felt; however, only minor damage was reported.

Teleseismic P-wave arrival and residual tables have been updated to include newly acouired data. The results are substantially the same as in previous years.

Preliminary results from refraction experiments in the summer of 1984 indicate apparent velocities of 6.67 km/sec for refracted P arrivals from the basement, 8.27 km/sec for Pn arrivals, and 3.57 km/sec for Lg arrivals.

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