Inverse problem of Ocean Acoustic Tomography (OAT) - A numerical experiment

Show simple item record Murty, T.V.R. Somayajulu, Y.K. Mahadevan, R. Murty, C.S. 2009-05-05T05:33:53Z 2009-05-05T05:33:53Z 1994
dc.identifier.citation Thirty Ninth Congress of the Indian Society of Theoretical and Applied Mechanics. Proceedings, Ed. by: Sinha, S.B. 100-110p.
dc.description.abstract Acoustic model simulation experiments related to the forward and inverse aspects of ocean tomography have been taken up with a view to estimate the vertical sound speed field by inverting the travel time data. Two methods of inversion have been attempted. These are: (1) deterministic inverse and (2) stochastic inverse. To solve the former, singular value decomposition (SVD) is used to arrive at the model parameter(s). The data kernel consisting of acoustic path lengths in a pre-set number of ocean layers, or grids developEd. by solving the forward problem of the acoustic model enable build the generalized inverse operator (GIO) that operates on the travel time perturbation data. Resolution matrices obtained through SVD helped to examine the correctness of the solution. In the stochastic inverse case, for random model parameter and data, the vertical structure of the ocean is modeled through the quasi-geostrophic theory while the horizontal structure is assumed to have Gaussian covariance, with length scales of 100 km. In both cases, a good agreement has been observed between the assumed and the reconstructed sound speed perturbation field
dc.language.iso en
dc.publisher Indian Society of Theoretical and Applied Mechanics
dc.rights Copyright [1994]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
dc.subject acoustic tomography
dc.subject sound velocity
dc.subject mathematical models
dc.subject acoustics
dc.title Inverse problem of Ocean Acoustic Tomography (OAT) - A numerical experiment
dc.type Conference Article

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