Absolute transport estimates of total and individual water masses in the northern Greenland Sea derived from hydrographic and acoustic Doppler current profiler measurements -: art. no. 3298

被引:13
作者
Cisewski, B [1 ]
Budéus, G [1 ]
Krause, G [1 ]
机构
[1] Alfred Wegener Inst Polar & Marine Res, D-27568 Bremerhaven, Germany
关键词
Greenland Sea; circulation; transports; West Spitsbergen Current; East Greenland Current; ADCP; MOORED CURRENT METERS; MARGINAL ICE-ZONE; ARCTIC-OCEAN; BARENTS SEA; ATLANTIC WATER; POLAR FRONT; FRAM STRAIT; CIRCULATION; SUMMER; HEAT;
D O I
10.1029/2002JC001530
中图分类号
P7 [海洋学];
学科分类号
0707 ;
摘要
[1] Conductivity-temperature-depth transects across the Greenland Sea and Fram Strait provide geostrophic shear velocity profiles, which were absolutely referenced using the simultaneous measurements from a vessel-mounted acoustic Doppler current profiler. The measurements are performed mainly in 1997, with supplements in 1998, 1995, and 1994. The observations confirm that all currents within the area have a strong barotropic component so that calculations based on the geostrophic method underestimate the transports considerably. Particulars for the transports of mass and heat are given for all individual and total water masses in the area. Meanders and eddies on horizontal scales between 20 and 70 km affect the total transport in the West Spitsbergen Current significantly. The Atlantic Water transports range between 2 and 7 Sv, mainly dominated by the cross-sectional area occupied by this water mass. The total northward heat transport across 75 degreesN is estimated as 54.7 TW and across 79 degrees40'N as 42 TW in September 1997.
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页数:19
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