Geoacoustic Inversion for the New Jersey Shelf: 3-D Sediment Model |
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Authors: | Ballard M S Becker K M Goff J A |
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Institution: | Applied Research Laboratories, University of Texas at Austin, Austin, TX, USA; |
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Abstract: | A 3-D model of sediment sound speed for a 90-km $^{2}$ area on the New Jersey shelf was constructed by application of a geoacoustic inversion technique. This approach is based on a combination of seismic reflection measurements and a perturbative inversion scheme using horizontal wave number estimates. In a two-step process, seismic reflection measurements were used to identify depths at which discontinuities in the sound-speed profile (SSP) likely occur. Then, the perturbative inversion algorithm made use of this a priori information by employing qualitative regularization, an optimal method for addressing stability and uniqueness issues associated with solving the ill-posed inversion problem that provides for resolution of the layered seabed structure. |
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