Short Range Acoustic Propagation Under Arctic Ice Cover During Icex 16
During the Arctic Submarine LabHosted 2016 Ice Exercise, short-range acoustic propagation under ice cover was evaluated. Sound speed profiles were measured and a series of acoustic signals at depths of 25, 50, and 183 meters and frequencies of 950, 2800, and 4050 hertz, respectively, were transmitte...
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ftdtic:AD1029872 2023-05-15T14:35:29+02:00 Short Range Acoustic Propagation Under Arctic Ice Cover During Icex 16 Nelson,Michael S NAVAL POSTGRADUATE SCHOOL MONTEREY CA MONTEREY United States 2016-09-01 text/html http://www.dtic.mil/docs/citations/AD1029872 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD1029872 en eng http://www.dtic.mil/docs/citations/AD1029872 Approved For Public Release; ACOUSTIC PROPAGATION transmission loss arctic ocean Arctic Beaufort Sea sound speed profile bellhop modeling Short Range Arctic Ice Cover variable layer ARCTIC OCEANOGRAPHIC Ray Paths Text 2016 ftdtic 2017-04-23T14:47:11Z During the Arctic Submarine LabHosted 2016 Ice Exercise, short-range acoustic propagation under ice cover was evaluated. Sound speed profiles were measured and a series of acoustic signals at depths of 25, 50, and 183 meters and frequencies of 950, 2800, and 4050 hertz, respectively, were transmitted from the ice camp. Remotely located vertical line arrays at ranges of approximately 1.5 and 3 kilometers recorded the transmissions. The sound speed profile data obtained at the ice camp were used to model ray paths and transmission loss in the observed frequency, range, and depth combinations. The received signals were processed and analyzed to determine observed variability and transmission loss, which was then compared to the models. A key finding was the presence of a highly variable layer at 50 meters, which was characterized by its effects on sound signals and the sound speed profile. Observations also highlighted variability during transmissions and between trials while finding significant weaknesses in the modeling softwares ability to accurately predict the acoustic environment in the region. Text Arctic Arctic Ocean Beaufort Sea Defense Technical Information Center: DTIC Technical Reports database Arctic Arctic Ocean |
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Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
ACOUSTIC PROPAGATION transmission loss arctic ocean Arctic Beaufort Sea sound speed profile bellhop modeling Short Range Arctic Ice Cover variable layer ARCTIC OCEANOGRAPHIC Ray Paths |
spellingShingle |
ACOUSTIC PROPAGATION transmission loss arctic ocean Arctic Beaufort Sea sound speed profile bellhop modeling Short Range Arctic Ice Cover variable layer ARCTIC OCEANOGRAPHIC Ray Paths Nelson,Michael S Short Range Acoustic Propagation Under Arctic Ice Cover During Icex 16 |
topic_facet |
ACOUSTIC PROPAGATION transmission loss arctic ocean Arctic Beaufort Sea sound speed profile bellhop modeling Short Range Arctic Ice Cover variable layer ARCTIC OCEANOGRAPHIC Ray Paths |
description |
During the Arctic Submarine LabHosted 2016 Ice Exercise, short-range acoustic propagation under ice cover was evaluated. Sound speed profiles were measured and a series of acoustic signals at depths of 25, 50, and 183 meters and frequencies of 950, 2800, and 4050 hertz, respectively, were transmitted from the ice camp. Remotely located vertical line arrays at ranges of approximately 1.5 and 3 kilometers recorded the transmissions. The sound speed profile data obtained at the ice camp were used to model ray paths and transmission loss in the observed frequency, range, and depth combinations. The received signals were processed and analyzed to determine observed variability and transmission loss, which was then compared to the models. A key finding was the presence of a highly variable layer at 50 meters, which was characterized by its effects on sound signals and the sound speed profile. Observations also highlighted variability during transmissions and between trials while finding significant weaknesses in the modeling softwares ability to accurately predict the acoustic environment in the region. |
author2 |
NAVAL POSTGRADUATE SCHOOL MONTEREY CA MONTEREY United States |
format |
Text |
author |
Nelson,Michael S |
author_facet |
Nelson,Michael S |
author_sort |
Nelson,Michael S |
title |
Short Range Acoustic Propagation Under Arctic Ice Cover During Icex 16 |
title_short |
Short Range Acoustic Propagation Under Arctic Ice Cover During Icex 16 |
title_full |
Short Range Acoustic Propagation Under Arctic Ice Cover During Icex 16 |
title_fullStr |
Short Range Acoustic Propagation Under Arctic Ice Cover During Icex 16 |
title_full_unstemmed |
Short Range Acoustic Propagation Under Arctic Ice Cover During Icex 16 |
title_sort |
short range acoustic propagation under arctic ice cover during icex 16 |
publishDate |
2016 |
url |
http://www.dtic.mil/docs/citations/AD1029872 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD1029872 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Beaufort Sea |
genre_facet |
Arctic Arctic Ocean Beaufort Sea |
op_relation |
http://www.dtic.mil/docs/citations/AD1029872 |
op_rights |
Approved For Public Release; |
_version_ |
1766308302294089728 |