Abstract
Elastic parameters derived from seismic reflection data provide information
on the lithological contrast at an interface and support the geological
interpretation. We present a method to estimate elastic parameter
contrasts at a given interface in a 1-D layered medium from PS-to-PP
amplitude ratios. The method is applied to synthetic data to demonstrate
its possibilities and limitations. First results for real data acquired
in the Campi Flegrei caldera (southern Italy) reveal a gas-bearing
layer at around 3 km depth and indicate a strong negative velocity
contrast at 7.5 km depth, possibly related to the presence of partial
melt.
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