STUDIES IN MARINE GEOPHYSICS AND UNDERWATER SOUND FROM DRIFTING ICE STATIONS.
The detailed drift of T-3 from May 1962 to June 1969 is plotted from over 9000 celestial and satellite fixes processed entirely by digital computer. Over 14,000 km of precision depth profiles show detailed topography of parts of the Northwind Ridge, Chuckchi Rise, Mendeleyev Ridge, Alpha Cordillera,...
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ftdtic:AD0696997 2023-05-15T14:49:23+02:00 STUDIES IN MARINE GEOPHYSICS AND UNDERWATER SOUND FROM DRIFTING ICE STATIONS. Hunkins,Kenneth L. Kutschale,Henry W. Hall,John K. LAMONT-DOHERTY GEOLOGICAL OBSERVATORY PALISADES N Y 1969-09 text/html http://www.dtic.mil/docs/citations/AD0696997 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0696997 en eng http://www.dtic.mil/docs/citations/AD0696997 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Seismology Snow Ice and Permafrost Acoustics (*MARINE GEOPHYSICS *ARCTIC OCEAN) (*UNDERWATER SOUND *ICE ISLANDS) DRIFT ECHO RANGING REFLECTION SEDIMENTATION THICKNESS STRUCTURAL GEOLOGY SOUND TRANSMISSION OCEAN WAVES SCATTERING METEOROLOGICAL SATELLITES DATA PROCESSING OCEAN CURRENTS ARLIS 2 ICE ISLAND FLETCHERS ICE ISLAND SEISMIC NOISE Text 1969 ftdtic 2016-02-18T22:36:56Z The detailed drift of T-3 from May 1962 to June 1969 is plotted from over 9000 celestial and satellite fixes processed entirely by digital computer. Over 14,000 km of precision depth profiles show detailed topography of parts of the Northwind Ridge, Chuckchi Rise, Mendeleyev Ridge, Alpha Cordillera, Wrangel Plain, Canada Plain, and Chuckchi Plain. Over 4,500 km of continuous seismic reflection profile show sediment thicknesses of about 1 km on the ridges to more than 3.5 km under Wrangel Plain. Over 49,000 magnetic and 10,000 gravity measurements have helped to delineate regional geologic structure and crustal movements. The sound scattering layer in the Arctic was discovered on precision depth recordings. Long-range sound propagation in the Arctic SOFAR channel is described by ray and normal mode theory. The normal mode treatment for the channel bounded above by a rough ice sheet is in remarkably good agreement with acoustic signatures from distant explosions. The Ekman current spiral was verified. This is the first quantitative verification of Ekman's theory in any deep ocean. The first observations of seismic noise on the Arctic Ocean floor were made aboard ice island ARLIS II. (Author) Text Arctic Arctic Ocean Ice Ice Sheet permafrost Defense Technical Information Center: DTIC Technical Reports database Alpha Cordillera ENVELOPE(-125.000,-125.000,85.500,85.500) Arctic Arctic Ocean Canada Canada Plain ENVELOPE(-140.000,-140.000,80.000,80.000) Mendeleyev ENVELOPE(14.517,14.517,-71.900,-71.900) Mendeleyev Ridge ENVELOPE(-178.000,-178.000,80.000,80.000) Wrangel Plain ENVELOPE(160.000,160.000,81.000,81.000) |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Seismology Snow Ice and Permafrost Acoustics (*MARINE GEOPHYSICS *ARCTIC OCEAN) (*UNDERWATER SOUND *ICE ISLANDS) DRIFT ECHO RANGING REFLECTION SEDIMENTATION THICKNESS STRUCTURAL GEOLOGY SOUND TRANSMISSION OCEAN WAVES SCATTERING METEOROLOGICAL SATELLITES DATA PROCESSING OCEAN CURRENTS ARLIS 2 ICE ISLAND FLETCHERS ICE ISLAND SEISMIC NOISE |
spellingShingle |
Seismology Snow Ice and Permafrost Acoustics (*MARINE GEOPHYSICS *ARCTIC OCEAN) (*UNDERWATER SOUND *ICE ISLANDS) DRIFT ECHO RANGING REFLECTION SEDIMENTATION THICKNESS STRUCTURAL GEOLOGY SOUND TRANSMISSION OCEAN WAVES SCATTERING METEOROLOGICAL SATELLITES DATA PROCESSING OCEAN CURRENTS ARLIS 2 ICE ISLAND FLETCHERS ICE ISLAND SEISMIC NOISE Hunkins,Kenneth L. Kutschale,Henry W. Hall,John K. STUDIES IN MARINE GEOPHYSICS AND UNDERWATER SOUND FROM DRIFTING ICE STATIONS. |
topic_facet |
Seismology Snow Ice and Permafrost Acoustics (*MARINE GEOPHYSICS *ARCTIC OCEAN) (*UNDERWATER SOUND *ICE ISLANDS) DRIFT ECHO RANGING REFLECTION SEDIMENTATION THICKNESS STRUCTURAL GEOLOGY SOUND TRANSMISSION OCEAN WAVES SCATTERING METEOROLOGICAL SATELLITES DATA PROCESSING OCEAN CURRENTS ARLIS 2 ICE ISLAND FLETCHERS ICE ISLAND SEISMIC NOISE |
description |
The detailed drift of T-3 from May 1962 to June 1969 is plotted from over 9000 celestial and satellite fixes processed entirely by digital computer. Over 14,000 km of precision depth profiles show detailed topography of parts of the Northwind Ridge, Chuckchi Rise, Mendeleyev Ridge, Alpha Cordillera, Wrangel Plain, Canada Plain, and Chuckchi Plain. Over 4,500 km of continuous seismic reflection profile show sediment thicknesses of about 1 km on the ridges to more than 3.5 km under Wrangel Plain. Over 49,000 magnetic and 10,000 gravity measurements have helped to delineate regional geologic structure and crustal movements. The sound scattering layer in the Arctic was discovered on precision depth recordings. Long-range sound propagation in the Arctic SOFAR channel is described by ray and normal mode theory. The normal mode treatment for the channel bounded above by a rough ice sheet is in remarkably good agreement with acoustic signatures from distant explosions. The Ekman current spiral was verified. This is the first quantitative verification of Ekman's theory in any deep ocean. The first observations of seismic noise on the Arctic Ocean floor were made aboard ice island ARLIS II. (Author) |
author2 |
LAMONT-DOHERTY GEOLOGICAL OBSERVATORY PALISADES N Y |
format |
Text |
author |
Hunkins,Kenneth L. Kutschale,Henry W. Hall,John K. |
author_facet |
Hunkins,Kenneth L. Kutschale,Henry W. Hall,John K. |
author_sort |
Hunkins,Kenneth L. |
title |
STUDIES IN MARINE GEOPHYSICS AND UNDERWATER SOUND FROM DRIFTING ICE STATIONS. |
title_short |
STUDIES IN MARINE GEOPHYSICS AND UNDERWATER SOUND FROM DRIFTING ICE STATIONS. |
title_full |
STUDIES IN MARINE GEOPHYSICS AND UNDERWATER SOUND FROM DRIFTING ICE STATIONS. |
title_fullStr |
STUDIES IN MARINE GEOPHYSICS AND UNDERWATER SOUND FROM DRIFTING ICE STATIONS. |
title_full_unstemmed |
STUDIES IN MARINE GEOPHYSICS AND UNDERWATER SOUND FROM DRIFTING ICE STATIONS. |
title_sort |
studies in marine geophysics and underwater sound from drifting ice stations. |
publishDate |
1969 |
url |
http://www.dtic.mil/docs/citations/AD0696997 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0696997 |
long_lat |
ENVELOPE(-125.000,-125.000,85.500,85.500) ENVELOPE(-140.000,-140.000,80.000,80.000) ENVELOPE(14.517,14.517,-71.900,-71.900) ENVELOPE(-178.000,-178.000,80.000,80.000) ENVELOPE(160.000,160.000,81.000,81.000) |
geographic |
Alpha Cordillera Arctic Arctic Ocean Canada Canada Plain Mendeleyev Mendeleyev Ridge Wrangel Plain |
geographic_facet |
Alpha Cordillera Arctic Arctic Ocean Canada Canada Plain Mendeleyev Mendeleyev Ridge Wrangel Plain |
genre |
Arctic Arctic Ocean Ice Ice Sheet permafrost |
genre_facet |
Arctic Arctic Ocean Ice Ice Sheet permafrost |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/AD0696997 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766320440866766848 |