Record Details

Spatial distribution of sound channel and its parameters in north Indian ocean

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Spatial distribution of sound channel and its parameters in north Indian ocean
 
Creator Ashalatha, K.
Murty, T.V.R.
Prasad, K.V.S.R.
 
Subject OCEANOGRAPHY AND LIMNOLOGY
GEOLOGY AND GEOPHYSICS
 
Description The Present work reports the variability of the derived sound channel and its parameters (surface sound velocity, conjugate depth, SLD (Sonic Layer depth) and SOFAR(Sound Fixing and Ranging) depth) has been presented over the Bay of Bengal and Arabian Sea. We use World Ocean Atlas Annual data (2013) on temperature; salinity of North Indian Ocean (0°–25°N; 50°–95°E) and its bathymetry have been utilized for the present computation. The depth of the sound channel axis increases towards the northern latitudes in the Arabian Sea, while it decreases in the Bay of Bengal. Coming to the conjugate depth, it shows variation from 120-400 m in the Bay of Bengal and 50-320 m in the Arabian Sea. The range of SLD is varying between 20-40 m in the Bay of Bengal and 10-30 m in the Arabian Sea. The Bay of Bengal and the Arabian Sea have depth limited nature of the profile, i.e. surface sound speed exceeds the near bottom values. This has an important implication in the sound propagation in the SOFAR channel. Anticipated acoustic rays in an ocean with depth limited profile will propagate as surface refracted, bottom reflected (RBR) rays. As a result, the effective sound channel lies much below the sea surface
 
Date 2016-03-10T06:37:19Z
2016-03-10T06:37:19Z
2015
 
Type Journal Article
 
Identifier Journal of Shipping and Ocean Engineering, vol.5; 2015; 334-340
http://drs.nio.org/drs/handle/2264/4929
 
Language en
 
Rights Copyright [2015]. 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.
 
Publisher David Publishing