Analysis of Drifting SOFAR Buoys in the Greenland Sea, 1989-1990
In an attempt to gain a better understanding of the intermediate depth circulation of the Greenland Sea, 16 SOFAR floats were launched into Fram Strait in 1988 and 1989. Between the fall of 1989 and the summer of 1990, five of these floats were tracked by autonomous listening stations (ALS) position...
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ftdtic:ADA246415 2023-05-15T16:03:52+02:00 Analysis of Drifting SOFAR Buoys in the Greenland Sea, 1989-1990 McCarren, David H. NAVAL POSTGRADUATE SCHOOL MONTEREY CA 1991-12 text/html http://www.dtic.mil/docs/citations/ADA246415 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA246415 en eng http://www.dtic.mil/docs/citations/ADA246415 Approved for public release; distribution is unlimited. DTIC AND NTIS Marine Engineering *STATIONS WATER TRACKING TRAPPING(CHARGED PARTICLES) DEPTH FRACTURE(MECHANICS) FLOATS BOUNDARIES CONTINENTAL SLOPES DRIFT SELF OPERATION FILAMENTS TRAJECTORIES CIRCULATION BOTTOM HEARING GREENLAND SEA BUOYS GREENLAND FRAM STRAIT OCEAN CURRENTS *BUOYS EAST GREENLAND CURRENT JAN MAYEN CURRENT SOFAR FLOATS THESES Text 1991 ftdtic 2016-02-22T17:22:19Z In an attempt to gain a better understanding of the intermediate depth circulation of the Greenland Sea, 16 SOFAR floats were launched into Fram Strait in 1988 and 1989. Between the fall of 1989 and the summer of 1990, five of these floats were tracked by autonomous listening stations (ALS) positioned to provide tracking in the southern portion of the Greenland Sea. One float (MZ86) provided tracking information for ten months of the ALS deployment period. The other floats provided tracking information ranging from several days to two months. These float tracks delineated the intermediate depth circulation around the Greenland Sea gyre. The MZ86 trajectory exited the Boreas Basin and crossed the Greenland Fracture Zone with a speed of approximately 17 cm s(-1). Along the Greenland continental slope the flow increased to 28 cm s(-1) suggesting the presence of a bottom trapped boundary current. Near 74 deg N the trajectory turned eastward under the shallower warm core of the Jan Mayen Current at 4 cm s(-1). This leg closed the Greenland Sea gyre and also shows evidence of interactions with filaments of the Norwegian Atlantic Current (NAC) coming through the Mohns Ridge at these intermediate depths. Two other floats demonstrated tracks which crossed the Mohns Ridge and drifted farther to the east, mixing with the waters of the NAC. Text East Greenland east greenland current Fram Strait Greenland Greenland Sea Jan Mayen Defense Technical Information Center: DTIC Technical Reports database Boreas ENVELOPE(-3.933,-3.933,-71.300,-71.300) Boreas Basin ENVELOPE(1.000,1.000,77.500,77.500) Greenland Greenland Fracture Zone ENVELOPE(0.500,0.500,75.500,75.500) Jan Mayen |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Marine Engineering *STATIONS WATER TRACKING TRAPPING(CHARGED PARTICLES) DEPTH FRACTURE(MECHANICS) FLOATS BOUNDARIES CONTINENTAL SLOPES DRIFT SELF OPERATION FILAMENTS TRAJECTORIES CIRCULATION BOTTOM HEARING GREENLAND SEA BUOYS GREENLAND FRAM STRAIT OCEAN CURRENTS *BUOYS EAST GREENLAND CURRENT JAN MAYEN CURRENT SOFAR FLOATS THESES |
spellingShingle |
Marine Engineering *STATIONS WATER TRACKING TRAPPING(CHARGED PARTICLES) DEPTH FRACTURE(MECHANICS) FLOATS BOUNDARIES CONTINENTAL SLOPES DRIFT SELF OPERATION FILAMENTS TRAJECTORIES CIRCULATION BOTTOM HEARING GREENLAND SEA BUOYS GREENLAND FRAM STRAIT OCEAN CURRENTS *BUOYS EAST GREENLAND CURRENT JAN MAYEN CURRENT SOFAR FLOATS THESES McCarren, David H. Analysis of Drifting SOFAR Buoys in the Greenland Sea, 1989-1990 |
topic_facet |
Marine Engineering *STATIONS WATER TRACKING TRAPPING(CHARGED PARTICLES) DEPTH FRACTURE(MECHANICS) FLOATS BOUNDARIES CONTINENTAL SLOPES DRIFT SELF OPERATION FILAMENTS TRAJECTORIES CIRCULATION BOTTOM HEARING GREENLAND SEA BUOYS GREENLAND FRAM STRAIT OCEAN CURRENTS *BUOYS EAST GREENLAND CURRENT JAN MAYEN CURRENT SOFAR FLOATS THESES |
description |
In an attempt to gain a better understanding of the intermediate depth circulation of the Greenland Sea, 16 SOFAR floats were launched into Fram Strait in 1988 and 1989. Between the fall of 1989 and the summer of 1990, five of these floats were tracked by autonomous listening stations (ALS) positioned to provide tracking in the southern portion of the Greenland Sea. One float (MZ86) provided tracking information for ten months of the ALS deployment period. The other floats provided tracking information ranging from several days to two months. These float tracks delineated the intermediate depth circulation around the Greenland Sea gyre. The MZ86 trajectory exited the Boreas Basin and crossed the Greenland Fracture Zone with a speed of approximately 17 cm s(-1). Along the Greenland continental slope the flow increased to 28 cm s(-1) suggesting the presence of a bottom trapped boundary current. Near 74 deg N the trajectory turned eastward under the shallower warm core of the Jan Mayen Current at 4 cm s(-1). This leg closed the Greenland Sea gyre and also shows evidence of interactions with filaments of the Norwegian Atlantic Current (NAC) coming through the Mohns Ridge at these intermediate depths. Two other floats demonstrated tracks which crossed the Mohns Ridge and drifted farther to the east, mixing with the waters of the NAC. |
author2 |
NAVAL POSTGRADUATE SCHOOL MONTEREY CA |
format |
Text |
author |
McCarren, David H. |
author_facet |
McCarren, David H. |
author_sort |
McCarren, David H. |
title |
Analysis of Drifting SOFAR Buoys in the Greenland Sea, 1989-1990 |
title_short |
Analysis of Drifting SOFAR Buoys in the Greenland Sea, 1989-1990 |
title_full |
Analysis of Drifting SOFAR Buoys in the Greenland Sea, 1989-1990 |
title_fullStr |
Analysis of Drifting SOFAR Buoys in the Greenland Sea, 1989-1990 |
title_full_unstemmed |
Analysis of Drifting SOFAR Buoys in the Greenland Sea, 1989-1990 |
title_sort |
analysis of drifting sofar buoys in the greenland sea, 1989-1990 |
publishDate |
1991 |
url |
http://www.dtic.mil/docs/citations/ADA246415 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA246415 |
long_lat |
ENVELOPE(-3.933,-3.933,-71.300,-71.300) ENVELOPE(1.000,1.000,77.500,77.500) ENVELOPE(0.500,0.500,75.500,75.500) |
geographic |
Boreas Boreas Basin Greenland Greenland Fracture Zone Jan Mayen |
geographic_facet |
Boreas Boreas Basin Greenland Greenland Fracture Zone Jan Mayen |
genre |
East Greenland east greenland current Fram Strait Greenland Greenland Sea Jan Mayen |
genre_facet |
East Greenland east greenland current Fram Strait Greenland Greenland Sea Jan Mayen |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA246415 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766399552979468288 |