Movement of the Kuroshio axis to the northeast shelf of Taiwan during typhoon events

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题名:	Movement of the Kuroshio axis to the northeast shelf of Taiwan during typhoon events
作者:	Morimoto,A;Kojima,S;Jan,S;Takahashi,D
贡献者:	水文科學研究所
日期:	2009
上传时间:	2010-07-08 09:24:12 (UTC+8)
出版者:	中央大學
摘要:	We investigated the movement of the Kuroshio axis on the northeast shelf of Taiwan associated with the passage of typhoons, using sea surface current data observed by the ocean radar system on Yonaguni and Ishigaki islands. First, we examined daily Kuroshio axis variation on the northeast shelf of Taiwan during typhoon events. The ocean radar data showed that the Kuroshio axis moved onto the shelf after passages of typhoons. The Kuroshio moved onto the shelf and stayed there after the passage of Typhoon Hai-Tang; while the Kuroshio maintained this pattern, southerly wind blew continuously for 4 days. The mean current speed northeast of Taiwan after the typhoon's passage increased by 18 cm s(-1). In addition, the sea level difference between two satellite altimetry tracks east of Taiwan increased by 14.4 cm. These results suggest that coastal upwelling east of Taiwan caused by the southerly wind generated an east-west sea level difference that, in turn, generated a northward geostrophic current. This current could have enhanced the Kuroshio east of Taiwan, and pushed it onto the shelf. (C) 2009 Elsevier Ltd. All rights reserved.
關聯:	ESTUARINE COASTAL AND SHELF SCIENCE
显示于类别:	[水文與海洋科學研究所] 期刊論文

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