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Regional Wavefield reconstruction for teleseismic P‐waves and Surface waves
Author(s) -
Sheldrake K. Prindle,
Marcinkovich C.,
Tanimoto T.
Publication year - 2002
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2001gl013721
Subject(s) - geology , wavefront , seismology , earth structure , seismic wave , energy (signal processing) , seismic energy , wave propagation , surface wave , seismic array , geophysics , geodesy , physics , optics , quantum mechanics
With the recent availability of dense seismological array data there is the opportunity to reconstruct 2D wavefields of propagating seismic energy. Such a reconstruction allows seismic data to be viewed as wavefields rather than as single station traces. Reconstruction of such wavefields within an array will improve our understanding of complex wave propagation effects and, hence, the underlying Earth structure beneath the array. We propose an algorithm applicable for teleseismic waves that is based on wavefield expansion by cubic B‐splines. Application to the high‐density array in Southern California shows that we can identify basin resonances and wavefront shifts; such wavefield shifts could be caused by local structure or travel path structure, as waves pass through major structural contrasts.