Passive geoacoustic inversion in the Mid-Atlantic Bight in the presence of strong water column variability
Abstract
Empirical Green's functions are obtained for 31 paths in a highly dynamic coastal ocean by cross-correlation of ambient and shipping noise recorded in the Shallow Water 2006 experiment on a horizontal line array and a single hydrophone about 3600 m from the array. Using time warping, group speeds of three low-order normal modes are passively measured in the 10–110 Hz frequency band and inverted for geoacoustic parameters of the seabed. It is demonstrated that, despite very strong sound speed variations caused by nonlinear internal waves, noise interferometry can be successfully used to acoustically characterize the seafloor on a continental shelf.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 01, 2020
- Source ID
- 10.1121/10.0001333
Entities
People
- Boris G Katsnelson
- Marina Yarina
- Oleg A. Godin
- Tsu Wei Tan
Organizations
- National Science Foundation
- Naval Postgraduate School
- Office of Naval Research
- University of Haifa