ML20236D473

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Forwards Printout of Earthquake Data File Re Earthquakes Which Occurred Near Plant from 1968-1974,per Request.Nrc Now Considering Data in Analysis.Earthquake Data File Code Explanation Also Encl.W/O Printout
ML20236D473
Person / Time
Site: Diablo Canyon, 05000000
Issue date: 10/30/1975
From: Davis L
NRC OFFICE OF THE EXECUTIVE LEGAL DIRECTOR (OELD)
To: Fleming R
AFFILIATION NOT ASSIGNED
Shared Package
ML20236A877 List: ... further results
References
FOIA-87-214 OL, NUDOCS 8707300468
Download: ML20236D473 (5)
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I October 30, 1975 l

Mrs. Raye Fleming 1746 Chorro Street San Luis Obispo, California 93401 i

In the Matter of Pacific Gas and Electric Company (DiaMo Canyon Nuclear Power Plant Unit Nos. I and 2)

Docket Nos. 50-2'i5 0.L. and 50-323 0.L.

Dear Mrs. Fleming:

Enclosed is a printout of the Earthquake Data File you requested which relates to earthquakes which occurred near Diablo Canyon from 1968-1974. This data file search was made by the Staff in reference to your contention that there is a trend of eartbouake epicenters perpendicular to the Diablo Canyon Plant. The Staff is now considering this data in its analysis and would be pleased to consider any other information in your possession that you desire.

Also enclosed is an Earthquake Data File code explanation to and your interpretation of this file. ,

Sincerely, I

L. Dow Davis, IV ,

Counsel for NRC Staff Enclosure DISTRIBUTION Davis cc: w/ encl.) Tourtellotte i hilip A. Crane, Jr., Esq. Shapar Mr. John Forster Engelhardt Andrew J. Skaff, Esq. Gallo Mr. Frederick Eissler NRC Files Mrs. Sandra A. Silver Reg Central Mr. Gordon Silver PDR/LPDR Mr. William P. Cornwell Formal File (2)

, D. Allison B. Ross l J. Delanef i n '

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EARTHQUAKE DATA FILE 1638-1930 (Ilistorical U.S. earthquakes),1900-Dec.1974: 108,178 events worldwide in total file.

Abbreviations used -

Sourde:

ADK Adak, AK, USA IIVO Hawaiian Volcano Obsy., Hawaii AEC U.S. Atomic Energy Commission Hational Park, Ill, USA ALG Algiers, Algeria ISK Istanbul-Kandilli, Turkey

.ALI Alicante, Spain ISS International Seismological ALM Almeria, Spain Summary, Kew, England, UK ALQ Albuquerque, NM, USA IST Istanbul, Turkey APA Apatity, RSFSR, USSR JER Jerusalem, Israel API Apia, Samoa Is. JMA Japan Meteorological Agency, ATH Athens Observatory, Greece

  • Tokyo, Japan BCI Bureau Central International de JOH Johannesburg, South Africa S6ismologie, Strasbourg, France KAR Karachi, Pakistan BLA Blacksburg, VA, USA KEW Kew, England, UK BNS Bensberg, Federal Republic of KIR Kiruna, Sweden Germany LEM Lembang, Java, Indonesia 80G Bogota, Colombia LIS Lisbon, Portugal BRA Bratislava, Czechoslovakia LJU Ljubljana, Yugoslavia  !

l BRK Berkeley (Haviland), CA, USA LHI Lwiro, Zaire l BSS Bulletin of the Seismological MAL Malaga, Spain I ' Society of America MAN Manila, Philippines BUC Bucharest, Romania MAT Matsushiro, Honshu, Japan BUL Bulawayo, Rhodesia MER Merida, Mexico l CAN Canberra, Australian Capital . MOS Moscow, RSFSR, USSR

Territory, Australia M0X Moxa, German Democratic

CAR Caracas, Venezuela Republic

.CFR Charles F. Richter (see Richter, NES Northeastern Seismological 1 1958, in References) Association, Weston, MA, USA l CGS Coast and Geodetic Survey NOS National Ocean Survey l CHC Chapel Hill, NC, USA NOU Noumea, New Caledonia CLL Collmberg, German Democratic HRR North Reno, MV, USA Republic OAX Oaxaca, Mexico.

DJA Djakarta, Java, Indonesia OBM Ulan Bator, Mongolia '

EQH Earthquake History of the United DTT Ottawa, Ontario,. Canada States (see References) OXF 0xford, MS, USA ERL Environmental Research PAL Palisades, NY, USA Laboratories PAS Pasadena, CA, USA G-R Gutenberg-Richter (seeGutenberg PDE Preliminary Determination of and Richter, 1954, in References) Epicenters G0L Golden (BergenPark),CO, USA. PEK Peking, China GS U.S. Geological Survey, Denver, PET Petropavlovsk, RSFSR, USSR

-C0, USA -

PMG Port Moresby, Papua HEL llelsinki, Finland PMR Palmer, AK, USA HRB Hurbanovo, Czechoslovakia PRA Praha (Prague), Czechoslovakia -

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PiiU Pruhonice, Czes .slovakia STU S ;tgart, Federal Repi:blic j QUE Quetta, Pakistan. of Germany RAC Raciborz, Poland SYK. Sykes (see References)

REY Reykjavik, Iceland TAC Tacubaya, "exico 1 RIV Riverview, New South Wales, TEli Tcheran, Iran i Australia TOC Tocklai, India  !

RMP Rome (MontePorzioCatone), TRI Trieste, Italy Italy .

TRN Trinidad, Trinidad, W.I.

ROM Rome, Italy TUL Tulsa, OK, USA j UCC Uccle, Delgium SAN Santiago, Chile SEA Seattle, WA, USA UGL Uglegorsk, RSFSR, USSR SHI Shi ra7., Iran UPP Uppsala, Sweden SHL Shillong, India .USE United states Earthquakes  !

SLM St. Louis, MO, USA VIC Victoria, British Columbia, SNM S6corro, NM, USA Canada ,

SSS San Salvador, El Salvador- MAR Harsaw, Poland STR Strasbourg, France HEL Wellington, New Zealand YSS Yuzhno-Sakhalinsk, RSFSR, USSR {

ZUR Zurich, Switzerland {

Authority (followsorigintime): i A Parameters of explosion supplied by U.S. Atomic Energy Commission (AEC).

B brameters of hypocenter suppl-ied by University of California at Berkeley.

l E Some or all parameters of explosion (controlled or accidental) supplied by l

any group or individual other than AEC.

! .G Parameters of hypocenter supplied by the U.S. Geological Survey (U.S.G.S.) l l for any area other than Island of Hawaii. .

l l H Parameters of hypocenter supplied by the U.S.G.S. ' Hawaiian Volcano Observatory. !

il Parameters of hypocenter supplied by St. Louis University. l L Parameters of hypocenter supplied by Lamont-Doherty Geological Observatory. I M Hypocenter based on microseismic information.

P Parameters of hypocenter supplied by California Institute of Technology. ]

R Parameters of hypocenter supplied by University of Nevada. l S An NEIS solution based on use of dense local networks, a local crustal.model, 1 or other methods not routinely applied by NEIS.

V Parameters of hypocenter supplied by Virginia Polytechnic Institute and State University.

H' Parameters of hypocenter supplied by University of Washington.

X Time not reported. .

Z Honinstrumental time and location.

  • Second-order hypocenter determination by CGS /HOS/ERL/GS using incomplete or.

less reliable data.

Depth control: A, assigned; D, restrained to agree with reported depth phases; G, restrained by geophysicist; N, restrained at normal depth (33 km) when data are not sensitive to depth for a shallow focus.

8 N

j Magnitudes: See source codes.

Int (intensity) map: . BSS, Du11stin of the SaismologiccI Socizty of America; l EQN, Earthquake notes; PDE, Preliminary Determination of Epicanters; USE, l United States Eart1. quakes. j 1

Phenomena:

D Diastrophism - F, surface faulting; U, uplift / subsidence; D, faulting and uplif t/ subsidence. i I

T Tsunami - T, tsunami generated; Q, possible tsunami.

S Seiche - S, seiche; Q, possible seiche.

V Volcanism - V, earthquake associated with volcanism.

N Nontectonic - C, coal bump or rockburst in coal mine; E, explosion, accidental, controlled, or suspected explosion; I, collapse; L, lights or other such visual phenomena seen; M, meteoritic source; R, rockburst.

.0. Waves generated - A, acoustic wave; G, gravity wave; B, both A & G; T, T-wave.

R_egj_on number (RN): Geographic region number as described in Flinn, Engdahl, and Hill. ,

Cultural Effects (CE):- C, casualties; D, damage; F, felt.

, Quality / Number of Stations (Q/S): Quality indicators are usually on an A, B, C, or D basis (A-very accurate; B-good; C-fair; D-poor). When used in combination for deep shocks (e.g. BBA) these represent the accuracy _ of (in I

order) epicenter, origin time, and depth.

Marsden/ Degree Square (MAR DG): Numbering system dividing the world into .

10' squares (MAR) and 1* subsquares (DG). Complete Earthquake Data File available sorted by this method.

REFERENCES .-

Coffman, Jerry L. and Carl A. von Hake, Earthquake History of the United States, Publication 41-1, Revised Edition (Through 1970), National Oceanic and Atmospheric Administration, Environmental Data ' Service,1973.

Engdahl, E.R., and R.H. Gunst, "Use of a High Speed Computer for the '

Preliminary Determination of Earthquake Hypocenters," Bu21ctin of the Sais-moZogical Society of America, vol. 56, no. 2, April 1966.

Flinn, E. A., E.R. Engdahl, and A.R. Hill, BuZZetin of the hcismological Society of America, vol . 64, no. 3, Part II, June 19R Gutenberg, B. and C.F. Richter, Seismicity of the Earth and Associated Phenomsna, Princeton University Press,1954 (9econd Edition), Hafner Pub-lishing Company, 1965, Facsimilt Edition.

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. Ilileman, J.A., t,.R. Allen, and J.M. Nordquist, scicmicity of ths

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  • Southern California Rcgion 1 Januarji '1932 to 31 December 1972, Seisr.oiogica]

Laboratory, California Institute of Technology, Pasadena,19~3, Richter, C.F. , Slementaryr Scismology,11.ll. Freeman and Company,1958.

Sykes, L.R., various papers in Bulletin of the Seismological Society of America and Jotmal of Coophysical Roccatch.

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