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105/03/08 14:00 臺灣師範大學海洋環境科技研究所張育綾副教授 演講
演講公告
張貼人：網站管理員 ╱ 公告日期：2016-02-17演 講 公 告
主講人：張育綾 副教授
地點：中央大學科學一館S-325教室
摘要：
講題：Effect of Mesoscale Eddies on the Taiwan Strait Current
主講人：張育綾 副教授
臺灣師範大學海洋環境科技研究所
時間：03月08日（星期二）下午2點
地點：中央大學科學一館S-325教室
摘要：
This study shows that mesoscale eddies can alter the Taiwan Strait Current. The 20-yr data-assimilated Japan Coastal Ocean Predictability Experiment 2 (JCOPE2) reanalysis data are analyzed, and the results are confirmed with idealized experiments. The leading wind-forced seasonal cycle is excluded to focus on the effect of the eddy. The warm eddy southwest of Taiwan is shown to generate a northward flow, whereas the cold eddy produces a southward current. The effect of the eddy penetrates onto the shelf through the joint effect of baroclinicity and relief (JEBAR). The cross-isobath fluxes lead to shelfward convergence and divergence, setting up the modulation of the sea level slope. The resulting along-strait current anomaly eventually affects a wide area of the Taiwan Strait. The stronger eddy leads to larger modification of the cross-shelf flows and sea level slope, producing a greater transport anomaly. The composite Sea-Viewing Wide Field-of-View Sensor chlorophyll-a (Chl-a) serves as an indicator to show the change in Chl-a concentration in the strait in response to the eddy-induced current. During the warm eddy period, the current carries the southern water of lower concentration northward, reducing Chl-a concentration in the strait. In contrast, Chl-a is enhanced because the cold eddy–induced southward current carries the northern water of higher concentration southward into the strait.
最後修改時間：2016-02-17 AM 10:55
