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A U.S. DEPARTMENT OF COMMERCE National Technical Information Service
AD-A02^ 595
SPECIAL DATA COLLECTION SYSTEM (SDCS) EVENT REPORT.
EASTERN KAZAKH SSR. 25 DECEMBER 1975
TELEDYNE GEOTECH
PREPARED FOR
AIR FORCE TECHNICAL APPLICATIONS CENTER
10 MARCH 1976
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SDCS ER-75-68
W.5104
SPECIAL DATA COLLECTION SYSTEM EVENT REPORT Eastern Kazakh SSR, 25 December 1975
KJ. Hill, M.S. Dawkins, R.R. Baumstark, and M.D Gillispie
Alexandria Laboratories
Teledyne Geotech, 314 Montgomery Street, Alexandria, Virginia 22314
March 1976
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 223» \ T REPRODUCED BY
NATIONAL TECHNICAL INFORMATION SERVICE
U.S. DEPARTMENT OF COMMERCE SPRINGFIELD, VA. 22161
D D C fTprPnn nf?_p MAY 20 1976
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1 Unclassified
SECURITY CLASSIFICATION OF THIS PA^.r 'Wh^n Dmlm Enlrredj
REPORT DOCUMENTATION PAGE KKAD INSTRUCTtOSS BEFORE COMPLETINr, KORM 1 KfcPOKT NUMBLH
SDCS-ER-75-68
2 OOVT ACCESSION NO. 3 RECIPIENT'S CATALOG NuMHF R
4. TITLE fanJ Subf/(/oJ
SPECIAL DATA COLLECTION SYSTEM (SDCS)
Eastern Kazakh SSR, 25 December 1975
5 TYPE OF REPORT & PERIOD CO^ERf D
Technical
6 PERFORMING ORf. REPORT NUMBER
7. AUTHOflf«;
Hill, K. J., Dawkins, M. S., Baumstark, R. R.
and Cillispie, M. D.
8 CONTRACT OR GRANT NJMBtR.«)
F086Ü6-74-C-0013
9. PERFORMING ORGANIZATION NAME AND ADDRESS
Tcledyne Geotech 314 Montgomery Street Alexandria, Virginia 22314
10 FROG fXM ELEMENT PR-JICT T AL« AREA ft «ORK UNIT NUMBERS
T/4703
11, CONTROLLING OFFICE NAME AND ADDRESS
Defense Advanced Research Projects Agency Nuclear Monitoring Research Office 1400 Wilson Blvd.-Arlington, Virginia 22209
12 REPORT DATE
10 March 1976 1J NUMÜEP OF PAGES
16 14. MCNI CORING AGENCY NAME 4 ADDHtSG'/f dlllr'enl Irnm Conlrolllng Cllic»)
VELA Seismological Center 312 Montgomery Street Alexandria, Virginia 22314
'S SECURITY CL ASS 'C.I thtt report,
Unclassified 15« DECL ASSlF:r AT'ON LJ*NGRADlNG
SCHEDULE
16 DISTRIBUTION STATEMENT (of Ml« Report)
APPROVED FOR PUBLIC RELEASE; DISTRIBUTION UNLIMITED.
17. DISTRIBUTION STATEMENT (al Ih» mbtlrtcl entered In Black 20, lldtllerenl Irom Report)
18. SUPPLEMENT ARY NOTES
19. KEY WORDS (Continue on reverie tide II neceaeary end Identify by block number)
20 ABSTRACT (Continue on reveree aide II nrceeeery end Identity by block nurrber)
^D ) JAN 71 1473 EDITION OF 1 NOV 65 IS OBSOLETE Unclassified SECURITY CLASSIFICATION OF THIS PAGE (Wh** Vfil» tnt*t*d}
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Lat. Long . mb M s
50 N 078 E 6.3 N/A 50 N 084 E 6.9 N/A
SDCS EVENT REPORT '10. 6 8
Eastern Kazal- SSR, 25 December 1975
This event report contains seismic data from the Special Data Collection System (SDCS) , and other sources for ti.e above event Published epicenter information from seismic observations is:
"P" Arrival Origin Time
NORSrtR 05:24:19.7 05:17:03 Hagfors 05:24:10.2 05:16:39
Using SDCS stations, LASA and NORSAR, the epicenter location and magnitudes become
05:16:57.4 49.8N 078.8E 5.8 3.2
All SDCS stations were operational during this period.
Short-period signals associated with this event were recorded at all SDCS stations, LASA and NORSAR. Horizontal SP channels at all SDCS stations were rotated. NORSAR "P" arrival was obtained from their bulletin; the TAL transmission was not recoverable.
ALPA recorded a long-period signal for this event. LP signals were masked by Iceland Event at RK-ON, CPSO, FN-WV, and HN-ME. WH2YK and NORSAR did not record LP signal arrivals for this event and were not included in this report. Polarity of the LP radial channel at RK-ON was reversed; to correct this, a mathematical inversion of the LP radial data was performed before the hori- zontal channels were rotated. Horizontal LP channels at CPSO, HN-ME, KK-ON, and FN-WV were rotated. Validity of the ALPA long- period vertical beam is uncertain and horizontal beams weie not included because of program recovery problems. LASA long-period data were not included because of complicated recovery procedures
Scaling factors on plots are millimicrons at 1 Hz (not corrected for instrument response) with the exception of the LASA short- period plot. LASA SP scaling factors are millimicrons per inch.
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HYPOCENTER DETERMINATION
INPOT FOR EVENT 25 DEC 75 05:17:00.0 50.000N 80.000E OKH.
FESIDDA1S DIST. AZ. STA. AKFIVA1 CA1C BEST REST REST NAG 05 24 19.7 -0.1 -0.1 38.5 313.1 WH2TK 05 27 t»8.2 0.2 0.2 66.6 17.3 FK-ON 05 29 0U.3 -0.8 -0.8 79.6 355.1 HN-HE 05 29 09.4 0.9 0.9 80.2 337.2 1ÄO 05 29 27.9 0.2 0.2 83.8 3.4 PN-VJV 05 29 57.9 0.1 0.1 90.0 3a3.1 CPSO 05 30 15.a -0.5 -0.5 93.9 3a7.2
67 HBEEIN TPAVI1 TIME TAB1ES
ORIGIN LAT. 05:16:5".0 a9.668N 05:16:57.U a9.765N
LONG. DEPTH (KM) 7e.787E -18. CALC 7e.75lE 0. REST
SDV IT STA 0.5 10 7 0.5 3 7
CAIC U . 2
1 . 0 0 0. 0 0
0 o! 0 0 0 . 0
0 . 0
REST 4 . 2
1 . 0 0 0. 0 0
0 0. 0 0 0 . 0
0 . 0
CHI2 COVERAGE ELLIPSE; 95 PER CENT CONF..LrVEL, SDV= 0,92 HAJOF 165.1KM. HINOF 40.7KH. A2;= 179 AREA= 21122 SQ.KH. REST
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DATA SUMMARY
05 INPUT FOF EVENT
17:00.0 50.000N 25 DEC 7^
80.000E OKM.
APBIVRL STAj. PHASE TIME INiTT PEP A^
NAO ALPA «n2YK PK-ON HN-HE LAO FN-WV CPSO
EP LP
EP EP EP EP EP EP
05 05 05 0^ 05 05 05 05
2tt 5U 27 29 29 2^ 29 30
19 U9 U8 01* 09 21 57
7 0 2 3
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AP LP2 SPZ SP7 SPZ SAB SP7 SPZ
0.6 22.0 0.9 0.6 0.9 1.0 0.8 0.8
OPT^TN IRT. LONG. 05:16:^4.0 49.^^8« 78.7e7E 05:16:57.« U9.765N 78.7MF
HAGNITTDE MB US PIP DIST
845. 6.08 "«.^ 2. 3.20 59.8
156. 5.89 66.6 110. 5.U8 7?.^ 133. 5.56 ^0.2 232. 6.07 93.8 «3. 5.3 3
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