SKS splitting measurements with horizontal component misalignment

Details SKS splitting measurements with horizontal component misalignment SKS splitting measurements with horizontal component misalignment

Apr 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011geoji.185..329t&link_type=abstract

Geophysical Journal International, Volume 185, Issue 1, pp. 329-340.

Statistics

Computation

1

Broad-Band Seismometers, Body Waves, Seismic Anisotropy, Computational Seismology

Scientific paper

The measurement of SKS splitting parameters is widely used for the study of deformation in the upper mantle, but the misalignment of the station horizontal components, for example misorientation of the sensors, may result in false measurements. In this paper, we suggest that the splitting analysis should be repeated with different assumed angles of misalignment. Two criteria can be applied to correct the measurement of the SKS splitting parameters: (1) the horizontal rotating angle should produce the global minimum transverse energy, as determined using the least transverse energy method; (2) there should be consistent results between the least transverse energy method and the minimum eigenvalue method. Model tests show that the method is suitable for complex anisotropy models, such as two-layer anisotropy.

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