1993 LOS ANGELES REGION SEISMIC EXPERIMENT

A PASSIVE STUDY FROM SEAL BEACH
NORTHEASTWARD THROUGH THE MOJAVE DESERT

The November 11 through December 16, 1993 passive phase of LARSE was a joint effort involving scientists from the University of California (UCLA), the U.S. Geological Survey (U.S.G.S.), the California Institute of Technology (Caltech), and the University of Southern California (USC). The passive phase of LARSE involved the deployment of approximately 88 stations along a 175 km long linear array across the Los Angeles Basin, San Gabriel Mountains, and Mojave Desert northeast of Los Angeles. For the passive survey, energy sources were local and teleseismic earthquakes.

LOCATION OF STATIONS DEPLOYED DURING LARSE'93
Some station numbers are given for reference



The goal of the 1993 LARSE experiment was to collect waveform data from local and distant earthquakes to obtain three-dimensional images of lower crust and upper mantle structural features in Southern California, particularly under the San Andreas fault and the San Gabriel mountains. During the four weeks of continuous recording, over 160 teleseismic and over 400 local events were recorded at each site.

This data set has since been complemented by the acquisition of deep crustal multichannel seismic-reflection and refaraction profiles using onshore and offshsee

REFERENCE

Descriptions of the array instrumentation , data processing , timing corrections and events recorded are presented in the following USGS Open File Report, or by clicking on the underlined links.

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