Volume transport in the Soya Strait during 2006–2008 |
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| Authors: | Yasushi Fukamachi Kay I Ohshima Naoto Ebuchi Tadao Bando Kazuya Ono Minoru Sano |
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| Institution: | 1.Institute of Low Temperature Science,Hokkaido University,Sapporo,Japan;2.Soya Fishery Cooperative Society,Wakkanai,Japan;3.Wakkanai Fisheries Research Institute,Hokkaido Research Organization,Wakkanai,Japan |
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| Abstract: | Time-series data of the vertical structure of the Soya Warm Current (SWC) were obtained by a bottom-mounted acoustic Doppler
current profiler (ADCP) in the middle of the Soya Strait from September 2006 to July 2008. The site of the ADCP measurement
was within the coverage of the ocean-radar measurement around the strait. The volume transport of the SWC through the strait
is estimated on the basis of both the vertical structure observed by the ADCP and the horizontal structure observed by the
radars for the first time. The annual transport estimates are 0.62–0.67 Sv (1 Sv = 106 m3s−1). They are somewhat smaller than the difference between the previous estimates of the inflow and outflow through other straits
in the Sea of Japan, and smaller than those obtained in the region downstream of the strait during 2004–05 (0.94–1.04 Sv).
The difference in the two periods may be attributed to interannual variability of the SWC and/or the different measurement
locations. |
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