Spatial variability of the ambient noise field associated with the Marginal Ice Zone and its relationship to environmental parameters
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Authors
Biggs, Kristian Pedersen
Subjects
Ambient noise
marginal ice zone
eddies
hot spots
Greenland Sea
marginal ice zone
eddies
hot spots
Greenland Sea
Advisors
Bourke, Robert H.
Date of Issue
1988-12
Date
December 1988
Publisher
Language
en_US
Abstract
During the month of July 1987 an acoustical experiment was
conducted by the United States Naval Research Laboratory (NRL)
in the East Greenland Sea Marginal Ice Zone (MIZ) . Ambient
noise "hot spots" or concentrated areas of relatively high
noise levels were found along the ice edge using a towed
array. Ambient noise levels were obtained on 27 and 28 July
using AN/SSQ-57A and AN/SSQ-57XN5 calibrated sonobuoys . The
temperature structure of the area was determined using XBT
(ship) and AXBT (P3C aircraft) buoys placed inside and outside
the ice edge. The ice edge was determined from coincident
satellite photos, 90 GHz microwave imagery and P3 radar ice
edge maps. Weather data (sea state and wind speed and direction)
were recorded on the ship. The data seem to indicate a correlation between the high ambient noise levels of the hot
spots and the presence of a large topographically controlled
mesoscale eddy located at the southeastern extent of the MIZ.
Type
Thesis
Description
Series/Report No
Department
Engineering Acoustics
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
101 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.