USGS Professonal Paper 1096 - IRIS

CALIFORNIA--Continued
Garland, TX
INSTRUMENTATION
Seismometer Galvo Type Magnification
CQde T¥pf': Component T (sec) 0
Tg(sec) recording at T 0
Remarks
(BF-CL) , (BP-CL) ,
(CP-CL) (ls t , 2d,
and 4th oper )
(KI1-CL) , (I1V-CLl,
(ND-CLl , (TF-CLl,
(YR-CLl: Benio ff- - - - - - - -- Z,NS,EW 1.0 --- Magnetic ta!::,e, (BF-CL) : 450 K ---
3S-mrn film. (BP-CL) : 120 K
Sprengnether---- Z,NS,EW 20.0 --- --do--------
(CP-CL): 215 K
(KI1-CL) : 500 K
(I1V-CL) : 225 K
(ND-CLl : 150 K
(TF-CL) (2d
oper.) : 120 K
(YR-CL) : 246 K
--- ---
(BF-CLl (2d
oper.l, (DV-CL) ,
(TN-Cll: Benioff--------- Z,NS,EW 1.0 --- --do-------- (DV-CL) : 440 K ---
(TN-CL) : 250 K
(BF-CLl (4th
oper.) , (BP-CLl
(last 3 °Eer.) ,
(CP-CL) (3d ,nd
5th oper. ),
(KI1-CL) (las t 2
oper.) , (I1V-CL)
(2d oper.),
(ND-CLl (2d
oper.) , (YR-CLl
(3d oper.) ; Geotech 5-13---- Z,NS,EW 1.0 --- Magnetic tape (BF-CLl: 450 K Portable system.
(CP-CL) : 215 K
(KM-CL): 500 K
(HV-CL) : 225 K
Geotcch---------
(ND-CLl : 150 K
Z,NS,EW 20,0 --- --do--------- --- Do.
(BP-CLl (2d
oper.) , (I1LICL),
(MLLCt) , (ML3CLj,
(I1L4CL) : Geotech--------- Z,NS,EW 1.0 --- --do--------- (I1L2CL) ; 280 K 00.
(HL3CL) : 300 K
(I1L4CL) : 250 K
Timing system: Geotech crystal clock checked with WWV (SO-msec tolerance) .
System resEonse curves: See figure 3, o· 364.
SHORT HISTORY
the LRSM program began w 1960
" part of the VELA-Uniform project. Ie continued until 1971, when "
woe replaced 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 ,nd identify underground nuclear explosions.
All work i, accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, V,.
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