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USGS Professonal Paper 1096 - IRIS

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CALIFORNIA--Continueo<br />

Lo, Angeles, CA<br />

INSTRUMENTATION<br />

Seismometer Galvo Type Magnification<br />

Code Type Component To(sec) Tg(sec) recording at T<br />

0<br />

Remarks<br />

Most stations Mark L-4C------------ Z 1.0 --- Magnetic tape, 10 K Magnification at 1 sec.<br />

strip chart.<br />

DRS GeosEace------------- Z,NS,EW 6.0 --- --00---------- 100 K ---<br />

TPR Johnson-Matheson----- Z 1.0 --- --do---------- --- ---<br />

Timing system:<br />

Eldorado 1710 time-code generator checked with wwv.<br />

System response curves:<br />

Available from station.<br />

SHORT HISTORY<br />

The seisrootectonic study of the Lo, Angeles Basin and its offshore area includes seismic-hazard assessment, effect of<br />

water-injection into oil fields on earthguake occurrence! and detection of precursory phenomena.<br />

62

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