ASA 124th Meeting New Orleans 1992 October

2pAO3. Test of nonperturbative ocean acoustic tomography inversion.

R. Michael Jones

T. M. Georges

NOAA Wave Propagation Lab., 325 Broadway, Boulder, CO 80303

Laura Ehret

Naval Postgraduate School, Monterey, CA

This work is part of an effort to compare various ocean acoustic tomography inversion methods given the same hypothetical sound-speed field (specified in a 1000- by 1000- by 5-km region). To test the WPL nonperturbative inversion method [Jones et al., NOAA Tech. Memo. ERL WPL-217 (1991)], the authors simulated tomographic data using ray tracing, performed an inversion, and compared the results with the sound-speed field provided. The simulation sampled the region in several vertical slices, and the inversion yielded the range average of the symmetric part of the sound-slowness profile for each slice.