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SDCS ER 75 15
0
(M SPECIAL DATA COLLECTION SYSTEM EVENT REPORT
Southern Iran. 7 March 1975
J R Woolson. D D Solan, M S.Dawhins, K J Hill, and R J Markle
Alexandria Laboratories
Teledyne Geotech. ZA Montgomery Street, Alexandria, Virginia 22314
September 1976
APPROVED FOP 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
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contrdctors, and this ^^^/^^"^ented .re those of the authors necessary. The views and "J f ^^ "yTep esenting the official and should not be interpreted ^ necessarily P ^^ Research
rÄ'Ä Sn^^ÄÄ-WlCtl«- Center, or the US Government.
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Unclassified stcijniTv cLAS^im ATKIN OF THI F THIS PA'.f fWMfi Data Irurmii
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REPORT DOCUMENTATION PAGE 1 RtPnMT NUMBER
SDCS-ER-75-15
|l OOVT ACCESSION NO
4 Tl TL f I «"^ Sc/h(lll>-
SPEC1AJ. DATA COLLECTION SYSTEM
Southern Ira.i, 7 March 1915.
RKAI) INSTRUC TIONS BEFORE COMPLETING FOWM
3 RECIPIENT'S CATALOG NUMHt l<
5 TYPS OF RIPgRT 8 PLHIOLi OO^LKLiJ
(SDgS)I|g>«t ^epgrT. y /Technical ^y^..^ i
*UTHOBf«J
Woolson, J. K., Solarl, Do D., Dawklns, M. S. Hill, K. J., and Markle, R. J.
/
6 PERFORMING ORG REPORT NUMBER
• CONTRACT OR GRANT NUMBtR'M
Fd8606-74-C-0013)
9 PERFORMING ORGANIZATION NAME AND ADDRESS
Teledyne Geotech / 314 Montgomery Street Alexandria, Virginia 22314 W M CONTROLLING O' 'ji NAME AND ADDRESS
Defense Advam -d Research Projects Agency Nuclear Monl'jring Research Office 1400 Wilson Blvd.-Arlington, Virginia 22209
il "Tl MONITORING AGENCY NAME » ADDRESSC/» dill»,enl Irow Con(rol//n« Olhcr,
VELA Seisraological Center /^~\ t * 312 Montgomery Street V'^jJZ.'l)* 1 Alexandria, Virginia 22314 f j
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12 BEPORT DATE
12 SepWiaMPM»75 U NUMBfR nr PAGES
16 SECURITY CLASS (ul Ihls rep'.rr,
Unclassified
15« DECL ASSIFICATION DOWNGRADING SCHEDULE
7?
16 JlSTRlBllTlON STATEMENT fol this Repmlj
APPROVED FOR PUBLIC RELEASE; DISTRIBUTION UNLIMITED.
J. R. /Woolson, D. D. /Solflri, M. S. 0awk<ns, K. ). /Hill
L nHSürmww STATEMENT M HZ .**,f*J!j_Jj_/!!'*rk]^/^^^^^^pT
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18 SUPPLEMENTARY NOTES
II . » '
19 (EV WORDS 'Cnnl/nue on raMWM »ide H nece.-'ary *nd Idenllly hy block „umb.r)
ft
20 ABSTRACT rrnnKnue on r^ver.« «ide // necrstary and Idenltly by block number)
[)Q FORM ]473 EDITION OF I NOV 65 IS OBSOLET!
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Unclassified /^V 5 &> OS- ' SECURITY CLASSIFICATION OF THIS PAGE fW»W1 f»«f« ^"'rr.■ .' Jj<
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SUCS Event Report No. 15
V Southern IranS 7 Marci 19 75
\ MM event report contains seismic data from System (SDCS), and other sources for the akave information from seismic observations is:
e Special Data Collection event.. Publisl.id epicenter
\
Origin Time Latitude Longitude n^
NORSAR LASA PDE Hagfors Array, Sweden
07:04:36 07:05:20 07:04:43 07:04:16
26.6N 34.3N -^.SN 24 N
056.7E 051.2E 056.3E 057 E
5.8 5.3 5.8 6.2
M s
N/A N/A 6.1 5.7
Source parameters, other than magnitude (» = 6.2, Ms = 5.4), were not
calculated for the SDCS and Arrays due to limited data.
FN-WV and CPSO were not operational for this event.
Short-period siganls associated with this event were recorded Jt MW», WH2YK, LASA and NORSAR. The signal was not observed at HN-ME due to low magnetic tape input levels. An unresolved time correction at RK-ON
precluded determination of a hypocenter.
Lone-period signals were recorded at RK-ON, WH2YK and HN-ME. The LPT chaLe! at HN-L was inoperative. Array long-period data was unrecoverable.
FN-WV, RK-ON, WH2YK, and HN-ME horizontal instruments are oriented ,-adial ™d transverse to the Nevada Test Site. CPSO is ^en^ä HJ ^E-U I ASA, NORSAR, and ALPA beams have been rotated to radUl and transverse with
respect to the event location.
Scaling factors on plots are millimicrons at 1 H. (not correct for instrument r^oonse) with the exception of LASA and NORSAR short-period plots. LASA SP slling factors are millimicrons per inch. Scaling factors are not reported
for NORSAR short-period.
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DATA SUMMARY
Sta. Phase Arrival Time
Inst. Per A/T Magnitude
% Ms
Distt
NAO EP 07:12:56.5 AH 1.2 388.6 6.01 45.2
HN-ME Lk 07:59:07 LPZ 23.0 275.1 5.52 91.0
WH2YK KF 07:17:48.5 SPZ 1.2 80.2 5.70 91.6
Lg 07:58:36 LPT 26.0 Clipped
LR 08:07:13 LPZ 20.0 29.3 4.55
RK-ON EP 07:30:46.4** SPZ 1.5 50.0 6.86 97.6
LR 08:19:33 ** LPZ 22.0 236.4 5.87
LAO EP 07:18:47.6 AB 1.3 52.8 6.07 104.5
Average m. = 6.16 (4 stations)
Average M =5.38 (3 stations)
* Distance calculated from PDE location. **Time correction approximately -13 minutes.
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NORSflR EVENT FILE 1975 MflR 7
EPX NO. 91160 RRR 7.12.58.1 2b.bN 5b. 7E 5.7MB 33KM
DIST = M6.0 flZl = 116.9 AMP = 137.6 PER =1.2 Uhf 2
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LASA 7 M5R99731.5N 50.6E 330 C 6.2 3^6 IRAN 7 18 48.2 LflO P 21.9 1.3 ZD.U 99.5 19.9
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