Inversion for the compressional wave speed profile of the bottom from synthetic aperture experiments conducted in the Hudson Canyon area

Author

Rajan, Subramaniam D. ; Doutt, James A. ; Carey, William M.

Author_Institution

Woods Hole Oceanogr. Instn., MA, USA

Volume

23

Issue

3

fYear

1998

fDate

7/1/1998 12:00:00 AM

Firstpage

174

Lastpage

187

Abstract

In September 1988, a series of acoustic propagation experiments were conducted in the Hudson Canyon area. These included synthetic aperture experiments in which a source transmitting a set of four pure tones was towed toward/away from a vertical array of 24 receivers. Data obtained at 50 Hz during one of the synthetic aperture experiments are used to obtain a model for the compressional wave speed profile in the bottom using a modal inverse method. This model is further refined using 175 Hz data. The ability of the inferred model to predict the field at 50 Hz and higher frequencies is examined

Keywords

acoustic field; acoustic signal processing; geophysical signal processing; inverse problems; oceanographic regions; oceanographic techniques; seafloor phenomena; ultrasonic velocity; underwater sound; 175 Hz; 50 Hz; Doppler shift; Hudson Canyon area; acoustic field prediction; acoustic propagation experiments; compressional wave speed profile; geoacoustic properties; inversion; modal inverse method; sediment layers; shallow water bottom; synthetic aperture experiments; vertical array; Acoustic propagation; Apertures; Doppler shift; Eigenvalues and eigenfunctions; Frequency; Inverse problems; Marine vehicles; Oceans; Predictive models; Water;

fLanguage

English

Journal_Title

Oceanic Engineering, IEEE Journal of

Publisher

ieee

ISSN

0364-9059

Type

jour

DOI

10.1109/48.701190

Filename

701190