Seasonal variation of horizontal material transport through the eastern channel of the Tsushima Straits
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- 作者：Akihiko Morimoto ; Tetsutaro Takikawa ; Goh Onitsuka ; Atsushi Watanabe ; Masatoshi Moku and Tetsuo Yanagi
- 关键词：Material transport ; Tsushima Straits ; Tsushima Warm Current
- 刊名：Journal of Oceanography
- 出版时间：February, 2009
- 出版年：2009
- 期刊代码：11_09168370
- 类别：eco
- 卷：65
- 期：1
- 页码：61-71
- 数据来源：sp
摘要
We conducted hydrographic observations ten times in the Tsushima Strait to reveal seasonal variations of horizontal material transports such as of heat, freshwater, chlorophyll a, and dissolved inorganic nitrogen (DIN) and phosphorus (DIP) through the eastern channel of the Tsushima Strait (ECTS). The volume, freshwater, and heat transport results are of nearly the same order as results reported in previous studies. The annual mean DIN and DIP transports of 3.59 kmol/s and 0.29 kmol/s are large relative to those of the Changjiang and the Taiwan Strait and are horizontally transported through the ECTS. Nutrient transports are high in July–August and October and low in April and November. Increased nutrient transports in July–August and October are due to the appearance of a cold saline water mass in the bottom layer of the ECTS. Changes in DIN transports in summer and autumn, which account for two-thirds of the total annual DIN transport, would have a large effect on the nitrogen budget and biological productivity in the Tsushima Warm Current region.