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Authors: Maercklin, N.* 
Zollo, A.* 
Title: Analysis of PS-to-PP amplitude ratios for seismic reflector characterisation: method and application
Issue Date: 2007
Series/Report no.: INGV- DPC/V4 PROJECT V4: TASK 2
Keywords: Campi Flegrei caldera
Subject Classification04. Solid Earth::04.06. Seismology::04.06.10. Instruments and techniques 
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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