A continuous mapping of tidal current structures in the Kanmon Strait
A continuous mapping of tidal current structures in the Kanmon Strait
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DOI：
10.1007/s10872-005-0038-y
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发表时间：
2005-04-01
影响因子：
2.3
通讯作者：
Zheng, H
中科院分区：
文献类型：
--
作者：
Yamaguchi, K;Lin, J;Zheng, H
2003年3月17日至20日期间，包括大潮在内，分布在海峡两岸的8个海岸声学断层扫描（CAT）系统连续绘制了关门海峡早人濑户的潮流结构图。通过对主要位于海峡两岸的成对CAT系统之间的相互声传输所获得的走时差数据进行反演分析，很好地重建了强潮流及其相关涡流的详细结构。选取好数据后，结果与船载声学多普勒海流剖面仪（ADCP）数据对比良好，东西向/南北向海流相关率为0.84/0.82，均方根差为0.47/0.48 ms(-1)。观测期间，海峡上7 m层每小时平均输送量东向达13 314 m(3) s(-1)，西向达5 547 m(3) s(-1)。 3 月 18 日和 19 日大潮发生时，日平均输送量预计为 1,470 m(3)s(-1) 和 2,140 m(3)s(-1) 向东。
Tidal current structures at the Hayatomono-Seto of the Kanmon Strait are mapped continuously during March 17 to 20, 2003, including a spring tide, by the eight coastal acoustic tomography (CAT) systems distributed on both the sides of the strait. Detailed structures of strong tidal currents and their associated vortices are well reconstructed by the inverse analysis of travel-time difference data obtained from the reciprocal sound transmission between the paired CAT systems located at both sides of the strait mainly. The results are well compared to the shipboard acoustic Doppler current profiler (ADCP) data at the correlation rate of 0.84/0.82 and the RMS difference of 0.47/0.48 ms(-1) for the east-west/north-south current after the selection of good data. During the observation period, the maximum hourly mean volume transport for the upper 7 m layer across the strait reached 13,314 m(3)s(-1) for the eastward and 5,547 m(3)s(-1) for the westward. The daily mean transport is directed to the eastward and estimated 1,470 m(3)s(-1) and 2,140 m(3)s(-1) for March 18 and 19, respectively, when a spring tide occurs.