USGS Professonal Paper 1096 - IRIS

OKLAHOMA--Continued
GarlanEi, 1'X
INSTRUMENTATION--Continued
Seismometer Galvo Type Magnification
Code Type Component To(sec) T (sec) recording .t T
g 0
Remarks
(AM-OK) , (AP-OK)
(lst oper.),
(DU-OK) : Benioff--------- Z,NS,EW 1.0 --- --do-------- (AM-OK) : 100 K ---
CAP_OK) . 35° K
(DU-OK) : 160 K
S~rengnether---- Z,NS,EW 20.0 --- --do-------- --- ---
Timing system: Geotech crystal clock checked with WWV (50-msec tolerance) .
System response curves: See figure 3, p. 363.
SHORT HISTORY
Tbe IRSM program began ill ]960 as pa rt of the 1lEI A-I1ni form project It continlled 1I111i] ] gIl when it wa1:; rep] aced by the
Special Data Collection System program which remains active. Work under these programs h" been directed towards advancing the
seismic-detection, identification, .nd location techniques necessary to detect ond identify underground nuclear explosions.
All work i, accomQlished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, V ••
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