드레이크해협 남부 심층 해류 관측

Title
드레이크해협 남부 심층 해류 관측
Alternative Title
Observations of deep currents in the southern Drake Passage
Author(s)
이재학; 장성태; 홍창수; 황상철; C.Provost
KIOST Author(s)
Lee, Jae Hak(이재학)
Publication Year
2007-04-17
Abstract
Current-meter moorings were deployed on a crossover point of the JASON satellite tracks northeast off Elephant Island in the southern Drake Passage in 2004 and 2006. Seasonal variation is clear in both years with relatively strong flows from January to May and weak flows from July to October indicating the effect of the sea surface ice. In the warm season, mean currents range from 10 to 30 cm/sec and from 5 to 20 cm/sec in 1000 and 2500 m depths, respectively, and abrupt changes in the flow direction for all depths occurred once a month in average. This suggests that the large vertical scale (exceeds 2000 m) of eddies is the unique feature of physical processes in the region. Spectral analysis indicates diurnal peaks at K1 and O1 frequencies are larger than semidiurnal peak at M2 frequency. Tidal currents of individual constituents range from 4 to 7 cm/sec.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/30622
Bibliographic Citation
2007 EGU Meeting, pp.1, 2007
Publisher
EGU
Type
Conference
Language
English
Publisher
EGU
Related Researcher
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