Retrieval of Moho-reflected shear wave arrivals from ambient seismic noise

Details Retrieval of Moho-reflected shear wave arrivals from ambient seismic noise Retrieval of Moho-reflected shear wave arrivals from ambient seismic noise

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010geoji.182..408z&link_type=abstract

Geophysical Journal International, Volume 182, Issue 1, pp. 408-420.

Astronomy and Astrophysics

Astronomy

9

Interferometry, Body Waves, Crustal Structure

Scientific paper

Theoretical studies on ambient seismic noise (ASN) predict that complete Green's function between seismic stations can be retrieved from cross correlation. However, only fundamental mode surface waves emerge in most studies involving real data. Here we show that Moho-reflected body wave (SmS) and its multiples can be identified with ASN for station pairs near their critical distances in the short period band (1-5s). We also show that an uneven distribution of noise sources, such as mining activity and wind-topography interaction, can cause surface wave precursors, which mask weaker body wave phases.

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