High resolution traveltime and slowness tomography
نویسنده
چکیده
A new 2-D traveltime tomography algorithm has been developed for use with long offset seismic streamer data. The forward problem is solved using initial value ray tracing in Delaunay triangulated grids. The traveltimes are calculated analytically. The linearised joint interface and velocity inversion is regularised via a geostatistical smoothing regularisation based on the formulation of a data covariance matrix. A novel slowness inversion is formulated to include information about the slope of the traveltime curve into off-diagonal terms of the data covariance matrix.
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