Publication Date:
2013-03-22
Description:
Analysis of shear-wave splitting requires records of well-isolated shear waves uncontaminated by other phases. Because contamination by P -to- S or S -to- P converted waves occurs easily, we have to choose the epicentral-distance window carefully to minimize such effects. We here provide several diagrams for each of the direct s , S , ScS , and ScS2 waves, which show how systematically converted waves bias the result of a splitting analysis as a function of epicentral distance and focal depth. The diagrams were constructed using synthetic seismograms calculated up to either 2 or 0.25 Hz for a standard radially symmetric and isotropic Earth model. The data selection based on these diagrams is intended as a first step in a data selection protocol.
Print ISSN:
0037-1106
Electronic ISSN:
1943-3573
Topics:
Geosciences
,
Physics
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