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SPECIAL DATA COLLECTION SYSTEM EVENT REPORT, EASTERN KAZAKH, 20 FEBRUARY 1975

J. R. Woolson, et al

Teledyne Geotuch

J Prepared for:

Defense Advanced Research Projects Agency Air Force Technical Applications Center

September 1975

DISTRIBUTED BY:

KTDi

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National Technical information Service U. S. DEPARTMENT OF COMMERCE

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o SPECIAL DATA COLLECTION SYSTEM EVENT REPORT Eastern Kazakh, 20 February 1975

J R Woolson, DD Solan 0 J Reinbold, and R.J.Markte

Alexandria Laboratories

Teledyne Geotech. 314 Montgomery Street. Alexandria. Virginia 22314

September 1975

APPROVED FOR PUBLIC RELEASE; DISTRIBUTION UNLIMITED

Sponsored By

The Defense Advanced Research Protects Agency

Nuclear Monitoring Research Office

1400 Wilson Boulevard, Arlington . Virginia 22209

ARPA Order No 2897

Monitored By

VELA Seismological Center

312 Montgomery Street, Alexandria. Virginia 22314 i \

D D C

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leproduced 1 .

NATIONAL TECHNICAL INFORMATION SERVICE

US Dopsrtmerl ol Commsrco Springfiftld, V» 22151

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Disclaimer: Neither the Defense Advanced Research Projects Agency nor the Air Force Technical Applications Center will be respons-ble for information contained herein which has been supplied by ^Iner organ ations or contractors, and this document is subject .0 later revision as may be necessary. The views and conclusions presented are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the Defense Advanced Research Projects Agency, the Air Force Technical Applications Center, or the US Government.

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REPORT DOCUMENTATION PAGE READ INSTHUrTIONS BEFORK roMPLKTINC KORM

I REPOR T i.uMtit H

SrCS-ER-75-8

i OOVT »CCESSION MO 3 MEClPIEN T'i CATALOG NUMBtB

4 TITLE crd Submin

SPECIAL DATA COLLECTION SYSTEM (SDCS)

Eastern Kazakh, 20 February 1975

TVPE 0^ BEPOBT k PERIOD COVERED

Technical

» PERrORMINC ORG. REPORT NUMBER

1 AUTMORr«)

Woolson, J. R., Solar 1, D. D., Relnbold, D. J., and Markle, R. J.

CONTRACT -)A GRANT NUMBERfU

F08606-74-C-O013 •

• PERFORMIMC ORGANISATION NAME AND ADDRESS

Alexandria Laboratories ^ 314 Montgomery Street Alexandria, Virginia 22314

PROGRAM ELEMENT PROJECT TASK AREA • «DORK UNIT NUMBERS

T/4703

II. CONTROLLING OFFICE NAME AND ADDRESS II REPORT DATE

Defense Advanced Research Projects Agency Nuclear Monitoring Research Office 1400 Wilson Blvd.-Arlington, Virginia 22209

8 September 1975 '1 NUMBER OF PAGES It

I* MON'TORlNG AGENCr NAME A ADDRESSnf dlllmfnl from Conlrolllnt Oltiet)

VELA Seismological Center 312 Montgomery Street Alexandria, Virginia 22314

IS SECURITY CL» .S (at ihl, raporl)

Unclas'-if led

is« OECL ASSlFiCATlON DOWNGRADING SCHEDULE

16 DISTRIBUTION STATEMENT <ol thlt Rtporl)

APPKÜVED FOR PUBLIC RELEASE; DISTRIBUTION UNLIMITED.

17 DISTRIBUTION STATEMENT ol Ihm mbilrmel »nltrtd In Block 30. II dlllmtftl from Rtporl)

I» SUPPLEMENTARY NOTES

19 KEY WORDS ^Conffnu* on rtvmttm Bidm It nmc»Ba»ry mnd Idtnllly by block number)

20 ABSTRACT rConlinu« on r«w*rj« aid* ff n«c«tl«ry mnd lamnllly by block ourrbet)

JL DD i lAM 73 1473 f UlTlON OF I NOV *. S IS OBSOLCTE Unclassified

SECURITY CL ASSir lC A'ICN OF TMI^ PA(ir rl*>i#»i '>'"• f"''-""'1

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SDCS Event Report No. 8

Eastern Kazakh, 20 February 1975

^le7TslclT2/0TinS ^^ ^^ ^ the Special Data collection ZfnZ M f* ?ther SOUrCeS for the above evcnt- Published epicenter information from seismic observations <«• e^j-cencer

Origin Time Latitude Longitude

NDRSAI LASA PDE Hagfors Array, Sweden

05:33:03 05:32:58 05:32:58 05:33:02

50 N 48.4N 49.8N 50 N

078 E 0 79.6E 078.IE 077 E

\

5.6 5,9 5.7 6.1

M s

N/A N/A N/A N/A

Using FHCS stations, LASA. TFO, and NORSAR, the epicenter location becomes

SDCS 6. Arrays 05:33:06 51.0N 077.9E 5.6 N/A

Scaling factors on plots are millimicrons at 1 Hz (not corrected for

IToT^UTir™*]^ the eXCePtion of ^ ^d NORSAR short-period Plots. LASA SP scaling factors are millimicrons per inch. Scaling factors are not reported for NORSAR short-period. taxing tactors

!r?LarP<;nN'WV1Were "^ 0Perational- Th^ *•*• no calibrations available

on the CPS0 analog tape covering this event time window, therefore the C?S0 magnifications were unobtainable. Calibrator problems ^t HN-ME precluded

tZ'T ^tl*™1*™11™ 0f short-Peri^ magnification levels at that site LAiA, NORSAR and ALPA long-period data were not recovered

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HYPOCENTER DETERMINATION

TNpii'" POP EVNT 2C FE" '^ PS:31;OC.O ^O.OOON ''^.CCOF OK*.

NAO WH2YK

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CO 0.2 ?7.2 311.« •0.« -O.U f?.f, 17.c 0.7 c.1 7fl.o 3?*.^. 0.« 0.2 82.7 2.P

-1.7 -1.R 02. f, »ttf. «, 1.0 1 .t» ou. P 7,f

f HERRTV TRAVEL TT1E TAPI.E?

ORIGIN LAT. nSj3?t32.2 52.163V C^j?3:Cf.1 ^C.9<SUN

LONn. DEPTH (KM) 77. 372E 16^. CMC 77.fl^2E 0. P^ST

SDV IT S^A 1.0 R f 1.0 3 ^

CALC 2 . 3

1 . 0 o o. o r

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0 . 0

CHi: COVERAGE "LLIPSF; 9,: PER CENT COVF..LEVEL, SDV= 0.9a MAJOR 173.UKM. MINOR ^.2KM. AZ= 1 AP^.= 213Ü6 SO.KM. FFST

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DATA SUMMARY

INPUT FOR EVENT 20 FEB 7S 05:33:00.0 50.000N 78.C00E CKM.

ARPTVAL HlÖflTOOE STA. PHASE TIME INST PER A/T MB BS BI1 ßI51.

NAO EP 05 UO 18.3 AB 0.6 117. WH2YK EP 05 «*3 50.0 SPZ 0.8 215. RN-HE EP 05 tt5 10.2 SPZ 0.6 999Q. LAO EP 05 H5 30.6 AB 0.9 19S. CPO EP 05 a6 16.8 SPZ 1.2 9Q9«». TFO EP 05 a6 30.2 SPZ 1.0 25.

ORIGIN LAT. LONG. DEPTH (RRI 05:33:32.2 52.163N 77.372E 165. CALC 05:33:06.1 50.96aN 77.852E 0. PEST

5.27 6.03

5.96

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37.2 65.^

B2.7

QU .P

HAG 5.37 5.63

SDV STA 0.2U ü 0.U2 ü

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NORSAR NORSflR 5EI5M0 BULLETIN FOR 20 FEB 1975 CDRY 51/75] FORMflT ^

1 20 FEB 1975 2 5 32 53 ^9.IN 79,6E 33C B 5.6 329 EASTERN KflZRKh SSK 3 5 ^0 16.1 01R P

EP EXECUTION NO. 29710 RBN 23 NM

108.8 1.1 13.8 39.3 77.''t

BP-B 0.6-2.0 HZ ORDER 3 FILTER

PRB1 290

03B

PRB2 200

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PflBI 150

LASA

1 20 FEB 1975 I H 2i 3S ^h^r. 79'6E 33C c 6'0 329 EASTERN KflZflKH 55R 3 5 45 30.2 LRO P 130.1 1.0 22.5 85.3 356.1

EPX 95535 ^ BP-B

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PRBl 160

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