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Type: Artigo de periódico
Title: An asymptotic inverse to the Kirchhoff-Helmholtz integral
Author: Tygel, M
Schleicher, J
Santos, LT
Hubral, P
Abstract: Modelling a reflected wave by the Kirchhoff-Helmholtz (KH) integral consists of an integration along the reflector. By this, one sums the Huygens secondary-source contributions to the wavefield attached to the reflector at the observation point. The proposed asymptotic inverse KH integral, by which this modelling process is inverted, works in a completely analogous way. It consists of an integral along the reflection traveltime surface of the reflector. For a point on the reflector, one sums the reflected-wave contributions attached to the respective reflection-traveltime surface associated with the related source-receiver pair. In this way, the new integral is a more natural inverse tb KH forward modelling integral than the conventional Kirchhoff migration integral that is well known in seismic reflection imaging. The new inverse integral reconstructs the Huygens sources along the reflector, thus providing their positions and amplitudes.
Country: Inglaterra
Editor: Iop Publishing Ltd
Citation: Inverse Problems. Iop Publishing Ltd, v. 16, n. 2, n. 425, n. 445, 2000.
Rights: fechado
Identifier DOI: 10.1088/0266-5611/16/2/311
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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