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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39545

Title: Typhoon-enhanced upwelling and its influence on fishing activities in the southern East China Sea
Authors: Yi Chang;Jui-Wen Chan;Yuan-Chao Angelo Huang;Wei-Quan Lin;Ming-An Lee;Kuo-Tien Lee;Cheng-Hsin Liao;Kae-Yih Wang;Yi-Chun Kuo
Contributors: 國立臺灣海洋大學:環境生物與漁業科學學系
Date: 2014
Issue Date: 2016-12-19T01:21:00Z
Publisher: International Journal of Remote Sensing
Abstract: Abstract:Ocean–atmosphere interactions before and after the passage of Typhoons Haitang, Fung-wong, and Morakot across the southern region of the East China Sea (ECS) were examined by assessing satellite measurements of sea surface temperature (SST) and chlorophyll-a (chl-a) concentration in conjunction with wind data. In terms of the satellite-derived data, the SST declined and chl-a concentration increased after the passage of the typhoons, and this could have resulted from the upwelling induced by typhoons via their long-duration, strong winds. According to fisheries data collected after the passing of Typhoon Morakot, the major fishing grounds of the torchlight fishery were found to have shifted northwards from the northern tip of Taiwan to the southern ECS. Moreover, the major target fish species changed from skipjack tuna (pre-typhoon) to squid (post-typhoon), signifying that the typhoon-enhanced upwelling might have caused the skipjack tuna, which typically prefer warm water, to have migrated elsewhere. In contrast, the nutrient-rich, upwelled water might have directly led to increases in chl-a concentrations and contributed the increase in local squid densities. This study suggests that typhoons can cause marked cooling of the sea surface as well as enhance upwelling that previously resulted in not only chl-a increases but also changes of local fish communities and, consequently, fishing activities.
Relation: 35(17), pp.6561-6572
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39545
Appears in Collections:[環境生物與漁業科學學系] 期刊論文

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