The effect of underground structure on seismic motions of the ground surface |
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| Authors: | Joel M Crichlow |
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| Institution: | Computer Centre, University of the West Indies, St Augustine, Trinidad |
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| Abstract: | Summary. Two-dimensional finite element modelling of underground structural anomalies at shallow depths has been done to obtain the response at the ground surface to damped, vertically incident, SH -waves. Power spectral ratios are examined to determine what effects the position, shape, depth and size of the anomaly have on the surface seismograms. Based on the results gathered from a number of models, inferences are made with respect to the inverse problem: given the seismic motion of the ground surface, what can be said about the underground structure? |
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