Geoacoustic inversion by mode amplitude perturbation
Poole, Travis L.
Frisk, George V.
Lynch, James F.
Pierce, Allan D.
MetadataShow full item record
This paper introduces a perturbative inversion algorithm for determining sea floor acoustic properties, which uses modal amplitudes as input data. Perturbative inverse methods have been used in the past to estimate bottom acoustic properties in sediments, but up to this point these methods have used only the modal eigenvalues as input data. As with previous perturbative inversion methods, the one developed in this paper solves the nonlinear inverse problem using a series of approximate, linear steps. Examples of the method applied to synthetic and experimental data are provided to demonstrate the method's feasibility. Finally, it is shown that modal eigenvalue and amplitude perturbation can be combined into a single inversion algorithm that uses all of the potentially available modal data.
Author Posting. © Acoustical Society of America, 2008. This article is posted here by permission of Acoustical Society of America for personal use, not for redistribution. The definitive version was published in Journal of the Acoustical Society of America 123 (2008): 667-678, doi:10.1121/1.2821975.
Suggested CitationArticle: Poole, Travis L., Frisk, George V., Lynch, James F., Pierce, Allan D., "Geoacoustic inversion by mode amplitude perturbation", Journal of the Acoustical Society of America 123 (2008): 667-678, DOI:10.1121/1.2821975, https://hdl.handle.net/1912/2491
Showing items related by title, author, creator and subject.
Geoacoustic inversion in laterally varying shallow-water environments using high-resolution wavenumber estimation Becker, Kyle M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2002-02)Sound propagation in shallow water is highly dependent on the interaction of the sound field with the bottom. In order to fully understand this problem, it is necessary to obtain reliable estimates of bottom geoacoustic ...
Meridional circulation during the Last Glacial Maximum explored through a combination of South Atlantic δ18O observations and a geostrophic inverse model Gebbie, Geoffrey A.; Huybers, Peter (American Geophysical Union, 2006-11-15)The vertical profile of meridional transport in the South Atlantic is examined by combining paleoceanographic observations with a geostrophic circulation model using an inverse method. δ18Ocalcite observations along the ...
Parazoo, N. C.; Denning, A. S.; Berry, J. A.; Wolf, Aaron S.; Randall, D. A.; Kawa, S. Randolph; Pauluis, O.; Doney, Scott C. (American Geophysical Union, 2011-05-12)Atmospheric mixing ratios of CO2 are strongly seasonal in the Arctic due to mid-latitude transport. Here we analyze the seasonal influence of moist synoptic storms by diagnosing CO2 transport from a global model on moist ...