Fresnel-Volume Multicomponent Migration

P144 FRESNEL-VOLUMEMULTICOMPONENT MIGRATION 1 A.GOERTZ Summary 2 1 CH. MÜLLER and S. LUETH 1FreeUniversity Berlin FRGeophysik Malteserstr. 74-100 12249Berlin Germany 2 Institute of Geoscience Geophysics KielUniversity S. BUSKE 1 WeproposeanewmethodforKirchhoffdepthmigrationofmulticomponentdatathatmakesuseof the polarisation angle to restrict the summation to the physically relevant part of the wavefield. By using the difference between the measured polarisation in the data and the expected polarisation for the point under consideration we are able to limit the summation to the first two Fresnel zones around the stationary point. The first Fresnel zone denotes the region that physically contributes to the measured reflection event whereas the second