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SPECIAL DATA COLLECTION SYSTEM EVENT REPORT NTS EVENT 'MIZZEN', 3 JUNE n75

J. R. Woolson, et al

Teledyne Geotech

Prepared for:

Air Force Technical Applications Center

23 September 1975

DISTRIBUTED BY:

Knü National Technical information Service U. S. DEPARTMENT OF COMMERCE

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SDCS-ER-75-22

05717: "

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SPECIAL DATA COLLECTION SYSTEM EVENT REPORT NTS Event MIZZEN ". 3 June 1975

J R Woolson, DO Solan. M S Dawkins. K.J.Hill, and R.J.Markle

Alexandria Laboratories

Teledyne Geotech, 314 Montgomery Street, Alexandria, Virginia 22314

September 1975

APPROVED FOR PUBLIC RELEASE; DISTRIBUTION UNLIMITED

Sponsored By

The Defense Advanced Research Projects 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

Irir' :

C ■ M

R«proouced by

NATIONAL TECHNICAL INFORMATION SERVICE

U S Dapurtmanl of Commtrc» Springfield VA 23131

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Uisclaiiner: Neither the Defense Advanced Research Projects Aaencv nnr tho Air Force Technical App) .ca'.ions Center will be resoonsthle fnr iif. , conta.ned herein which has Leen supplied by o?her orga tions ^ f0rnat,0n

contractors and this document is subject to later revi Ion as mav hP necessary. The views and conclusions presented are those nffho^ ?! an should not be interpreted as ne^essar ly repesen ?no ? e Sff c a?" Policies either expressed or impMed. of the Defend Advanced Reerh

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Unclaaaif^H SECURITY CLASSIFICATION OF THIS P»GE (Whm Dmlm Enl;,d)

REPORT DOCUMENTATION PAGE I REPORT NUMrjf R

SDCS-ER-75-22

• TITLE (mnii Sublinr)

2 GOVT ACCESSION NO

SPECIAL DATA COLLECTION SYSTEM (SDCS)

NTS Event "MIZZEN", 3 June 1975

' AuTMORr,

Woolson, J. R., Solari, D, D., Dawklns, H. S., Hill, K. J. and Markle, R. J.

9 PERFORMING ORGANIZATION NAME ANO ADDRESS

Teledyne Geotech 314 Montgomery Street Alexandria, Virginia 22314 II CONTROLLING OFFICE NAME AND ADDRESS

Defense Advanced Research Projects Agency Nuclear Monitoring Research Office 1400 Wilson Blvd.-Arlington. Virginia 22209 I« MONITORING AGENCY NAME » AODRESSfl/ dltUfnl from Conlrolllni Otlic*)

VELA Seismological Center 312 Montgomery Street Alexandria, Virginia 22314

18 DISTRIBUTION STATEMENT (ot Ihlt R»porl)

READ INSTRUCTIONS BEFORE COMPLETINO KORM

3 RECIPIENT'S CATALOG NUMBFR

S TYPE OF REPORT « PERIOD COVERFD

Technical

« PERFORMING ORG. REPORT NUMBER

S CONTRACT OR GRANT NUMBERCV

F08606-74-C-0013

10 PROGRAM ELEMENT PROJECT TASK AREA i WORK UNIT NUMBERS

T/4703

12 REPORT DATE

23 September 1975 IJ NUvlRFR ^r PAGES

_ <ar 15 SECURITY CLASS ,'o/ Ihlt ttporl)

Unclassified

• S« OECLASSIFICATION DOWNGRADING SCHEDULE

APPROVED FOR PUBLIC RELEASE; DISTRIBUTION UNLIMITED.

17 DISTRIBUTION STATEMENT (ot Ih, mbtlrmcl tnfrmd In Block 30. II dllUttnl Itom Roporl)

18 SUPPLEMENTARY NOTES

19 KEY WORDS fConll-iu» on revmrt- tld» II necettmry and Idtnllly hy block numbrr,

20 ABSTRACT (Conllnum on r*v»r«« »Id» II ntcrtury and Idtnllly by block numbrr) mil ■ ■ ictM JB

r. ,. ;■•• .

DD | jAN 73 1473 FOlTION OF I NOV 85 IS OBSOLETE I i

SECURITY CLASSIFICATION OF THl|.P. .CWhtn f)«i« tni««.

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F""'1 ii-mnmimin*^** I1IJ IHUHI II ■

SDCS Event Report No. 22

NTS Event "MIZZEN", 3 June 1975

This event report contains seismic data from '.he Special Data Collection System (SDCS), and other sources for the above event. Published epicenter information from seismiw observations is:

Origin Time Latitude Longitude m.

NORSAR LASA

14:40:07 14:40:01

38 N 37.ON

116 W 116.0W

5.6 5.3

M s

N/A N/A

Using SDCS stations, LASA and NORSAR, the epicenter location and magnitudes become

14:40:02 37.2N 116.0W 5.4 4.3

Short-period signals associated with this event were recorded at all SDCS stations, LASA and NORSAR.

Long-period signals wrre recorded at all SDCS stations, LASA, ALPA and NORSAR. The LP vertical channel magnification at HN-ME is unknown due to calibration problems. The gains of the horizontal LP instruments at RK-ON are unknown due to erratic calibration amplitudes. The long-period array beam data for LASA was not recoverable.

Details of the program used to obtain beamed vertical, radial and transverse long-period data at LASA, ALPA and NORSAR are in the process of being reviewed. Vertical beams are probably valid while horizontal beams are questionable.

Scaling factors on plots are millimicrons at 1 Hz (not corrected for instrument response) with the exception of LASA and NORSAR short-period plots. LASA SP scaling factors are millimicrons per inch. Scaling factors are not reported

for NORSAR short-period.

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HYPOCENTER DETERMINATION

INPUT FOF EVENT 3 JON 75 ia:UO:C0.O 37.00&N 116.000U OKH.

RESIDUALS STA. APEIVAL CALC REST LAC Itt 42 52.7 -0.1 -0.0 RK-ON 1ü U4 45.8 o.; -CO CPC 14 45 21.8 -0.0 0.2 WH2YF 14 45 39.4 0.1 0.3 FN-MV 14 46 00.0 -0.1 -0.1 HN-HE 14 47 08.1 G.4 0.2 NAC 14 51 32.5 -0.3 -0.6

67 HERRIN TRAVEL TIME TABLES

DIST.

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AZ. PEST REST 12.0 34.U 21..0 42.3 24.5 84.U 26.4 339.0 28.7 76.0 36.5 60.3

24.2

ORIGIN LAT. LONG. DIPTH (KH) ST>V IT STR 14:40:05.9 37.268N 115.951W 25. CALC 0.2 3 7 14:40:01.7 37.172N 116..024« 0. REST 0.3 2 7

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DATA SUMMARY

TNPOT FOF EVENT 3 JUN 75 1»4:UO:CO.P 37.000N 116.000» OK1!.

ARRIVAL HAGNITODE STAX -PHASE.

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iAc n 5.9a 12.0 LAC 11 1U a7 as.o LPZ 13.0 ?? 12.0 RK-ON EP ia aa a5.8 SPZ 0.9 icea. 5.83 21.0 RK-ON LR IH 53 2U.0 LPZ 15.0 173. a.68 21.0 CFC ?.? in a5 21,8 SPZ 1.1 387. 5.69 2U.5 CFO LQ ia 53 30.0 LPT 22.0 26. CFC LR 1U 55 17.0 LPZ 16.0 313. 5,01 2a.5 Hll2yK EP 1U a5 39.a SPZ Ü.9 12« a.77 26.a WH2YK LQ 1U 5a 53.0 LPT 20.0 21. WH2yK LP 14 57 oa.c LPZ 17.0 119. a.62 26.a FN-WV EP ia a6 00.0 SPZ 1.1 as. Ü.95 2P.7 FN-WV LQ 1U 55 20.0 LPT 2a.0 22. FN-WV LR ia 58 11.0 LPZ 18.C 171. a.81 28.7 AIPA LR 15 01 35.0 LAB 17.0 18. 3.90 33."' HN-HE EP 14 a7 08.1 SPZ 1.0 203. 5.56 36.5 HN-HE LR 15 02 27.0 LPZ 19.0 ?? 36.5 NAC EP ia 51 32.5 AB 1.2 läo. 5.73 73.2 NAO LR 15 22 39.0 LAB 21.0 11. a.03 73.2

ORIGIN LAT. LONG. ia:a0:05.9 37.268N 115.951W ia:tt0:01.7 37.172N 116.02aw

DEPTH (KN) HAG 25. CALC 5.39 0. REST 5.Ü2

SDV STA LPHAG LPSDV LPSTA 0.U6 6 4.3a O.U U 0.45 6 4.34 0.4 4

i

Short-period magnitudes (mb) used in averaging are restricted to those recorded at distances between 20 and 110 degrees from the epicenter.

U'cr^.ge long-period magnitude (Ms) is based on Rayleigh wave observations in the period range of 17 to 23 seconds per cycle.

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