Broadband Geo { Acoustic Inversion from Sparse Datausing Genetic

نویسنده

  • MARTIN SIDERIUS
چکیده

Received (to be inserted Revised by Publisher) Matched eld acoustic inversion techniques were investigated using data from sparsely populated vertical receiving arrays and a single receiver element. The purpose of considering sparse data sets is to investigate, under simulation, the feasibility of reducing the number and complexity of acoustic measurements needed for geo{acoustic inversion. The entire bandwidth of the 1997 Geo{ Acoustic Inversion Workshop provided data (25{500 Hz) was used which compensates for lacking spatial information when a limited number of receivers is considered. Forward model PROSIM and inversion code SAGA were applied to benchmark cases: sd, wa, and n. The inversion results generally showed good agreement with the ground truth for full arrays, sparse arrays and single receiver elements. With a simple two layer model, an eeective sound speed proole in the bottom was determined which produced a good t between model and observed pressure elds for the multi-layer case n.

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تاریخ انتشار 2007