USGS Professonal Paper 1096 - IRIS

UTAH--Continued
Gar] ?Till , IX
Timing system: Geotech crystal clock chf"ckf"rl with WWV (50-msec tolerance) .
System response curves:
See figure 3, p. 364 •
SHORT HISTORY
The LRSM Qrogram began in 1960 ., Qart of the VELA-Uniform ~roject. It continued until 191] wben it was 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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