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dc.contributor.authorBona, Andrej
dc.contributor.authorPevzner, Roman
dc.identifier.citationBona, A. and Pevzner, R. 2015. Using Fresnel Zone to Characterise and Image Different Types of Diffractors in Low S/N Situations, in Proceedings of the 77th EAGE Conference and Exhibition: Diffraction Modelling & Imaging. Jun 1-4015. Madrid: IFEMA.

We investigate the possibility to image and characterise the different types of diffractors – such as point, line, and edge – and separate them from reflections by limiting the aperture around the tangent point between the diffraction hyperbola and the relfection traveltime surface. To this end, we look at the tangents of the diffraction hyperbola with typical traveltime surfaces corresponding to the different diffrator types. We do this by studying the coherency of the recorded wavefield along the diffraction hyperbolae. The different types of diffractors show different energy distributions that can be used to characterise the diffractors and separate them from specular reflections. These areas of high energy correspond to the Fresnel zones of the particular diffractor type. Limiting the aperture of the diffraction hyperbola to the particular Fresnel zone results in improvement in S/N, while omitting the Fresnel zone corresponding to the reflections allows for imaging of the diffractors, which have larger Fresnels zones.

dc.titleUsing Fresnel Zone to Characterise and Image Different Types of Diffractors in Low S/N Situations
dc.typeConference Paper
dcterms.source.title77th EAGE Conference and Exhibition 2015
dcterms.source.series77th EAGE Conference and Exhibition 2015
dcterms.source.conference77th EAGE Conference and Exhibition
curtin.departmentDepartment of Exploration Geophysics
curtin.accessStatusFulltext not available

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