Open AccessSimultaneous iterative time‐domain sparse deconvolution to teleseismic receiver functions
Author(s) -
Escalante Christian,
Gu Yu J.,
Sacchi Mauricio
Publication year - 2007
Publication title -
geophysical journal international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0956-540X
DOI - 10.1111/j.1365-246x.2007.03511.x
Subject(s) - deconvolution , algorithm , computer science , time domain , compressed sensing , multiple , cauchy distribution , domain (mathematical analysis) , blind deconvolution , iterative method , geology , mathematics , statistics , computer vision , mathematical analysis , arithmetic
SUMMARY In this paper, we present a new approach to estimate high‐resolution teleseismic receiver functions using a simultaneous iterative time‐domain sparse deconvolution. This technique improves the deconvolution by using reweighting strategies based on a Cauchy criterion. The resulting sparse receiver functions enhance the primary converted phases and its multiples. To test its functionality and reliability, we applied this approach to synthetic experiments and to seismic data recorded at station ABU, in Japan. Our results show Ps conversions at approximately 4.0 s after the primary P onset, which are consistent with other seismological studies in this area. We demonstrate that the sparse deconvolution is a simple, efficient technique in computing receiver functions with significantly greater resolution than conventional approaches.