Two‐dimensional analysis of the effect of subsurface anomalies on the free surface response to incident SH‐waves

Joel M. Crichlow*, David Beckles, William P. Aspinall

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

1 Citation (Scopus)

Abstract

Two‐dimensional finite element modelling of subsurface anomalies at shallow depth has been done to obtain the response to incident SH‐waves. Vertically incident SH and obliquely incident SH have been examined. Power spectral ratios were studied to determine the effect on the surface seismograms of the position, shape, depth, size and material composition of the anomaly. A number of relationships between the surface response and the anomaly has been identified. These relationships may be used in solving the inverse problem: given the seismic motion of the ground surface, determine the physical properties of the underground structure.

Original languageEnglish
Pages (from-to)495-511
Number of pages17
JournalGeophysical Journal of the Royal Astronomical Society
Volume79
Issue number2
DOIs
Publication statusPublished - 1 Jan 1984

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