From Bureau of Economic Geology, The University of Texas at Austin (www.beg.utexas.edu).
For more information, please contact the author.

Bureau Seminar, Friday, May 20, 2005

High-Resolution Images of Near-Seafloor Geology
in Deep Water from Shear Waves

Paul Murray

Abstract:

In exploration geophysics, multicomponent data are typically acquired for imaging deep targets several hundreds or thousands of meters below the seafloor. Survey design and standard processing techniques impose severe limits on the image quality near the ocean floor. With new techniques to better isolate upgoing shear-waves, we can process these data using an alternative flow to create high-resolution images of the upper 150 m of sediment.

This presentation will outline the basic problem, processing flow, and some initial results from an ocean-bottom-cable data set in Green Canyon, Gulf of Mexico. We compare our results with industry-standard processed data and high-resolution profiles acquired using underwater vehicles.