A technique for measuring the plane-wave reflection coefficient of the ocean bottom
Frisk, George V.
Oppenheim, Alan V.
Martinez, David R.
MetadataShow full item record
A new technique for the measurement of the plane-wave reflection coefficient of a horizontally stratified ocean bottom is described. It is based on the exact Hankel transform relationship between the reflection coefficient and the bottom reflected field due to a point source. The method employs a new algorithm for the numerical evaluation of the Hankel transform which is based on the "projection-slice" theorem for the two-dimensional Fourier transform. The details of the algorithm are described in the companion paper. Although the algorithm is applied to the case of an isovelocity ocean, the general theory for measuring the plane-wave reflection coefficient in a refracting ocean is developed. The technique provides information about the reflection coefficient, not only for real incident angles, _but also for complex angles, thus potentially providing substantial additional structural information about the bottom. The method is shown to yield excellent results with synthetically generated data for the cases of a hard bottom and slow isovelocity bottom.
Also published as: Journal of the Acoustical Society of America 68 (1980): 602-612
Suggested CitationTechnical Report: Frisk, George V., Oppenheim, Alan V., Martinez, David R., "A technique for measuring the plane-wave reflection coefficient of the ocean bottom", 1981-04, DOI:10.1575/1912/10244, https://hdl.handle.net/1912/10244
Showing items related by title, author, creator and subject.
The numerical synthesis and inversion of acoustic fields using the Hankel transform with application to the estimation of the plane wave reflection coefficient of the ocean bottom Mook, Douglas Robert (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1983-01)The plane wave reflection coefficient is an important geometry independent mean of specifying the acoustic response of a horizontally stratified ocean bottom. It is an integral step in the inversion of acoustic field ...
Martinez, David R. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1979-06)For a spherical acoustic wave incident on a horizontally stratified ocean bottom, the reflected pressure field and the plane-wave reflection coefficient are related through a two-dimensional spatial-wavenumber Fourier ...
Three-dimensional numerical modeling of bottom-diffracted surface-reflected arrivals in the North Pacific [poster] Stephen, Ralph A.; Udovydchenkov, Ilya A.; Bolmer, S. Thompson; Komatitsch, Dimitri; Tromp, Jeroen; Casarotti, Emanuele; Xie, Zhinan; Worcester, Peter F. (2015-12-15)Bottom-diffracted surface-reflected (BDSR) arrivals were first identified in the 2004 Long-range Ocean Acoustic Propagation Experiment (Stephen et al, 2013, JASA, v.134, p.3307-3317). The BDSR mechanism provides a means ...