Physics
Scientific paper
Sep 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20.1823w&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 17, p. 1823-1826.
Physics
8
Broadband, Earthquakes, P Waves, Position (Location), Seismic Waves, Wave Propagation, Surface Waves, Time Response
Scientific paper
High-frequency three-component array d, are used to study the P and S coda produced by* cal earthquakes. The data are displayed as broadba bearing-time records which allow us to examine a compl, time history of the propagation directions and arrival tin of direct and scattered phases crossing the array. This ~ sualization technique is used to examine the wavefield ~ two scale lengths using two sub-arrays~of sensors. Resu suggest that P coda is dominated by P energy propag, ing sub-parallel to the direct P arrival. The S coda pro agates in all directions and appears to be composed p~ dominantly of S and/or surface wave energy. Significant more 0e coda appears on the smaller scale length sub-art relative to the larger scale array suggesting that much, the ~, coda remains coherent for only very short distanc
Owens Thomas J.
Wagner Gregory S.
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