Recent advances in ocean-circulation research on the Yellow Sea and East China Sea shelves
Recent advances in ocean-circulation research on the Yellow Sea and East China Sea shelves
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DOI：
10.1007/s10872-008-0048-7
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发表时间：
2008-08-01
影响因子：
2.3
通讯作者：
Isobe, Atsuhiko
中科院分区：
文献类型：
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作者：
Isobe, Atsuhiko
综述了黄东海陆架海洋环流研究的最新进展。利用声学多普勒海流剖面仪（ADCPs）的观测表明，对马海峡（2.6 Sverdrups; 1 SV = 10（6）m（3）/s）和台湾海峡（1.2 Sv）之间的平均体积输运连通性是不完全的。剩余的1.4 Sv输运必须由穿越东海陆架断裂的陆上黑潮入侵提供。黄海暖流不是一个持续性的洋流，而是一个受偏北冬季风强迫的幕式事件。尽管如此，济州暖流被发现清楚地无论季节。此外，台湾海峡的通过流在冬季东北风盛行时可能是间歇性的。在中（强）东北风条件下，通流增强（消失）。利用所有已发表的ADCP估算，台湾海峡的通流输送（V）近似为V = V（0）+ V（1）cos（2 pi（t-K）/T），其中V（0），V（1），K分别为1.2 Sv，1.3 Sv和157天，t为年，T为365.2422天（即，1年）。对马海峡和台湾海峡的穿流输送的差异表明，从秋季到冬季，黑潮通过陆架坡折入侵陆地的活动增加。中国沿岸流在冬季有观测到，而陆架流在夏季则不明显。
Recent advances in ocean-circulation research on the Yellow Sea and East China Sea shelves are summarized. Observations using acoustic Doppler current profilers (ADCPs) suggest that the connectivity of mean-volume-transports is incomplete between the Tsushima (2.6 Sverdrups; 1 SV = 10(6) m(3)/s) and Taiwan Straits (1.2 Sv). The remaining 1.4-Sv transport must be supplied by onshore Kuroshio intrusion across the East China Sea shelf break. The Yellow Sea Warm Current is not a persistent ocean current, but an episodic event forced by northerly winter monsoon winds. Nevertheless, the Cheju Warm Current is detected clearly regardless of season. In addition, the throughflow in the Taiwan Strait may be episodic in winter when northeasterly winds prevail. The throughflow strengthens (vanishes) under moderate (severe) northeasterly wind conditions. Using all published ADCP-derived estimates, the throughflow transport (V) in the Taiwan Strait is approximated asV = V(0) + V(1) cos(2 pi(t - K)/T],where V(0), V(1), K are 1.2 Sv, 1.3 Sv, and 157 days, respectively, t is yearday, and T is 365.2422 days (i.e., 1 year). The difference between the throughflow transports in the Tsushima and Taiwan Straits suggests that the onshore Kuroshio intrusion across the shelf break increases from autumn to winter. The China Coastal Current has been observed in winter, but shelf currents are obscure in summer.