Hydrologic Conditions in the Santa Anna and Franz Victoria Troughs

The optimal source depth for transarctic transmissions and acoustic thermometry over transarctic paths, depends on the sound speed profile at the transmitting site. Furthermore, for analysis and interpretation of acoustic data in the experiment, it is necessary to have information on long-term varia...

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Bibliographic Details
Main Authors: Gavrilov, A. N., Pisarev, S. V.
Other Authors: MARINE SCIENCE INTERNATIONAL CORP
Format: Text
Language:English
Published: 1996
Subjects:
Physical and Dynamic Oceanography
Acoustics
*SOUND TRANSMISSION
*MARINE CLIMATOLOGY
*ARCTIC OCEAN
ATMOSPHERIC TEMPERATURE
BATHYMETRY
SEASONAL VARIATIONS
SALINITY
UNDERWATER ACOUSTICS
ACOUSTIC VELOCITY
ACOUSTIC DATA
OCEAN TIDES
TROUGHS
SANTA ANNA TROUGH
FRANZ VICTORIA TROUGH
SERDP COLLECTION
SERDP(STRATEGIC ENVIRONMENTAL RESEARCH AND DEVELOPMENT PROGRAM)
Arctic
Arctic Ocean
Online Access:http://www.dtic.mil/docs/citations/ADA348967
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA348967
Description
Summary:The optimal source depth for transarctic transmissions and acoustic thermometry over transarctic paths, depends on the sound speed profile at the transmitting site. Furthermore, for analysis and interpretation of acoustic data in the experiment, it is necessary to have information on long-term variations of the sound speed profile in the vicinity of the source. Such variations, like seasonal changes, tidal and internal waves, and intrusions, disturb the modal eigenfunctions and hence the excitation coefficients, which can lead to considerable fluctuations in the modal amplitudes at the receiving site. If these fluctuations are considerable, they may complicate the detection of climatic changes in the mean ice thickness reflected in variations of the sound speed also lead to variations in the modal propagation times, which produce noise in the measurements of climate and basin-scale changes in Arctic water.

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