Collection and Preliminary Analysis of Under-Ice Ambient Noise Data, Cape North, January to April, 1971.
Ambient noise data was collected from bottom-mounted hydrophones in 65 fms of water near Cape North, Nova Scotia, from January to April 1971. Preliminary analyses indicate that generalizations made from data collected at other sites can be used in only the broadest sense to predict noise levels at C...
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1971
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ftdtic:AD0733177 2023-05-15T16:37:11+02:00 Collection and Preliminary Analysis of Under-Ice Ambient Noise Data, Cape North, January to April, 1971. Oake,Austen Martin NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF 1971-09 text/html http://www.dtic.mil/docs/citations/AD0733177 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0733177 en eng http://www.dtic.mil/docs/citations/AD0733177 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Snow Ice and Permafrost Acoustics *UNDERWATER SOUND SEA ICE NOVA SCOTIA NOISE MEASUREMENT WEATHER WAVE EQUATIONS HYDROPHONES DATA PROCESSING EQUIPMENT THESES Text 1971 ftdtic 2016-02-21T21:51:39Z Ambient noise data was collected from bottom-mounted hydrophones in 65 fms of water near Cape North, Nova Scotia, from January to April 1971. Preliminary analyses indicate that generalizations made from data collected at other sites can be used in only the broadest sense to predict noise levels at Cape North. The open water spectral shapes resemble deep water spectral shapes proposed by Wenz (1962) rather than shallow water spectra found by Piggott (1964) at another location on the Scotian Shelf. Under-ice noise levels are below open water levels in the frequency range 40 Hz to 2 kHz, but above this frequency, mechanical noise sources within the ice pack elevate levels above those found under open water conditions. Text Ice ice pack permafrost Sea ice Defense Technical Information Center: DTIC Technical Reports database Cape North ENVELOPE(170.233,170.233,-71.283,-71.283) |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Snow Ice and Permafrost Acoustics *UNDERWATER SOUND SEA ICE NOVA SCOTIA NOISE MEASUREMENT WEATHER WAVE EQUATIONS HYDROPHONES DATA PROCESSING EQUIPMENT THESES |
spellingShingle |
Snow Ice and Permafrost Acoustics *UNDERWATER SOUND SEA ICE NOVA SCOTIA NOISE MEASUREMENT WEATHER WAVE EQUATIONS HYDROPHONES DATA PROCESSING EQUIPMENT THESES Oake,Austen Martin Collection and Preliminary Analysis of Under-Ice Ambient Noise Data, Cape North, January to April, 1971. |
topic_facet |
Snow Ice and Permafrost Acoustics *UNDERWATER SOUND SEA ICE NOVA SCOTIA NOISE MEASUREMENT WEATHER WAVE EQUATIONS HYDROPHONES DATA PROCESSING EQUIPMENT THESES |
description |
Ambient noise data was collected from bottom-mounted hydrophones in 65 fms of water near Cape North, Nova Scotia, from January to April 1971. Preliminary analyses indicate that generalizations made from data collected at other sites can be used in only the broadest sense to predict noise levels at Cape North. The open water spectral shapes resemble deep water spectral shapes proposed by Wenz (1962) rather than shallow water spectra found by Piggott (1964) at another location on the Scotian Shelf. Under-ice noise levels are below open water levels in the frequency range 40 Hz to 2 kHz, but above this frequency, mechanical noise sources within the ice pack elevate levels above those found under open water conditions. |
author2 |
NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF |
format |
Text |
author |
Oake,Austen Martin |
author_facet |
Oake,Austen Martin |
author_sort |
Oake,Austen Martin |
title |
Collection and Preliminary Analysis of Under-Ice Ambient Noise Data, Cape North, January to April, 1971. |
title_short |
Collection and Preliminary Analysis of Under-Ice Ambient Noise Data, Cape North, January to April, 1971. |
title_full |
Collection and Preliminary Analysis of Under-Ice Ambient Noise Data, Cape North, January to April, 1971. |
title_fullStr |
Collection and Preliminary Analysis of Under-Ice Ambient Noise Data, Cape North, January to April, 1971. |
title_full_unstemmed |
Collection and Preliminary Analysis of Under-Ice Ambient Noise Data, Cape North, January to April, 1971. |
title_sort |
collection and preliminary analysis of under-ice ambient noise data, cape north, january to april, 1971. |
publishDate |
1971 |
url |
http://www.dtic.mil/docs/citations/AD0733177 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0733177 |
long_lat |
ENVELOPE(170.233,170.233,-71.283,-71.283) |
geographic |
Cape North |
geographic_facet |
Cape North |
genre |
Ice ice pack permafrost Sea ice |
genre_facet |
Ice ice pack permafrost Sea ice |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/AD0733177 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766027476524335104 |