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Improved inversion for seismic structure using transformed,S-wavevector receiver functions: Removing the effect of the free surface

Citation

Reading, AM and Kennett, BLN and Sambridge, M, Improved inversion for seismic structure using transformed,S-wavevector receiver functions: Removing the effect of the free surface, Geophysical Research Letters, 30, (19) pp. 1981. ISSN 0094-8276 (2003) [Refereed Article]

DOI: doi:10.1029/2003GL018090

Abstract

The determination of structure from the inversion of teleseismic receiver functions may be improved by removing the contribution of the free surface. The free surface interaction gives rise to the highest amplitude signal on standard receiver functions and yet this initial pulse tells us little about the receiver structure below the surface layer. We apply a transformation to P, S and Horizontal wavevector components, which removes the free surface response and hence the initial P-pulse. A "pure" receiver function is calculated by deconvolving the S-wavevector component with the P-wavevector. In general, converted phase amplitudes within the receiver function waveform are better matched by the inverse algorithm, resulting in an improved estimation of seismic structure. In particular, low amplitude receiver function waveforms, often associated with poorly constrained structure, now yield a successful inverse.

Item Details

Item Type:Refereed Article
Research Division:Earth Sciences
Research Group:Geophysics
Research Field:Seismology and Seismic Exploration
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Earth Sciences
Author:Reading, AM (Professor Anya Reading)
ID Code:46767
Year Published:2003
Web of Science® Times Cited:38
Deposited By:Centre for Ore Deposit Research - CODES CoE
Deposited On:2007-08-31
Last Modified:2011-10-06
Downloads:0

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