Kyucho induced by intrusion of Kuroshio water in Sagami Bay, Japan
Kyucho induced by intrusion of Kuroshio water in Sagami Bay, Japan
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DOI：
10.1016/s0278-4343(99)00031-x
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发表时间：
1999-09-01
影响因子：
2.3
通讯作者：
Nagamatsu, H
中科院分区：
文献类型：
--
作者：
Matsuyama, M;Ishidoya, H;Nagamatsu, H
1994年1月9日，一股急流沿着相模湾海岸冲来，摧毁了湾头西侧的渔网。在被破坏的定置网附近的一个系泊站，10米深处的海流记录表明，最大流速为0.65 ms（-1），温度急剧上升，强海流持续了大约半天。根据沿着4个站的温度记录，估计热锋以0.6-0.7 ms（-1）的速度气旋性移动。连续的NOAA-IR卫星图像也显示了黑潮的暖水入侵通过大岛西水道并沿海岸沿着气旋移动。该湾CTD铸型显示为高温高盐水体，厚约70 m，宽约15 km。Kyucho的行为类似于Kubokawa和Hanawa（1984 b）从理论上推导出的旋转流体中的沿海密度流。黑潮区域的温度变化表明，九曲发生在黑潮非弯曲近岸路径向非大弯曲离岸路径的过渡时期。（C）1999 Elsevier Science Ltd.版权所有。
On January 9, 1994, a Kyucho (stormy current) rushed along the Sagami Bay coast and destroyed the fishing set-net at the western side of the bay head. The current record at 10 m depth, at a mooring station near the destroyed set-net, showed that the maximum velocity was 0.65 ms(-1) with a steep temperature rise, and the strong current continued for about half a day. The thermal front is estimated to have moved cyclonically at the speed of 0.6-0.7 ms(-1) from the temperature records at four stations along the bay coast. The successive satellite images, NOAA-IR, also showed the warm water intrusion of the Kuroshio water through the Oshima west channel and moving cyclonically along the coast. The CTD casts in the bay indicated high temperature and high salinity water with the thickness of 70 m and width of 15 km. The behavior of the Kyucho is similar to that of the coastal density current in a rotating fluid, theoretically derived by Kubokawa and Hanawa (1984b). The temperature variations in the Kuroshio region suggest that the Kyucho occurred during the transition period from the non-meander nearshore path of the Kuroshio to the non-large meander offshore path. (C) 1999 Elsevier Science Ltd. All rights reserved.