原名「台灣學術線上」
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dvd論後現代主義人權論述臺灣地區2018年"松雀鷹
   
   
   
     
   
 
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1
題名:On the Mixing of Waters at a Northern Offshore Area of Taiwan    
台灣北部海域水團混合的現象
著者:Ching-Sheng Chern(陳慶生) ;Joe Wang(王胄)
出版地區:台灣
出版城市:台北市
學科:地球科學
刊名:Terrestrial, Atmospheric and Oceanic Sciences
卷期:1卷3期(1990.9)
頁碼:297-306
語言:英語
摘要: 中文摘要PDF ; 英文摘要PDF

在台灣東北外海,由於地形的阻擋,黑潮次表層水湧出水面,在陸棚邊緣生成一個冷渦。冷渦的水文特性與黑潮水明顯不同。這個現象表示冷水湧升的過程中與陸棚水產生了混合,而且混合主要發生在垂直方向。維持混合所需的動態部份是由內潮波運動所提供。本文根據船上CTD及ADCP在定點觀測的結果描述了一個典型的例子。在觀測期間黑潮流入東海,而且水文與海流資料都顯示很?的內潮波存在。在水深80米以下,李氏數Ri小於1,而在斜溫層內(介於40-80米深)Ri約?4-10,這表示流場的不穩定性,因此亂流混合能力會增?。
Previous hydrographic surveys show that there exists a permanent upwelling center of Kuroshio subsurface water above the shelf break at the northeast offshore area of Taiwan. The water type of this cold dome is quite different from its Kuroshio origin. This indicates that the upwelling water is being mixed with shelf water and that the mixing is mainly in a vertical direction. The energy source of the mixing is partially supported by the internal tidal motion. A typical example was observed during December 3-4, 1989 from the CTD and ADCP surveys at an anchored station. During the survey period, the Kuroshio intruded onto the shelf and both the hydrographic and current profile data indicated a strong internal tide. The gradient Richardson number is smaller than 1 below 80m and is about 4-10 in the thermocline, which is in the 40-80m depth range. This indicates that the flow is generally unstable and thus the turbulent mixing is enhanced.


    

本卷期目次
Terrestrial, Atmospheric and Oceanic Sciences 1卷3期 (1990.9)
A Method of Estimating the Block-Like Body Under the Ground from the Polarization Ellipse of the Magnetic Field/ Chieh-Hou YangLun-Tao Tong
The Characteristics of Microtremors at the Site of SMART1 Array/ Win-Gee HuangYeong-Tein Yeh
Solar and Lunar Daily Geomagnetic Variations at Lunping from 1966 to 1989/ Yinn-Nien Huang
Transport and Behavior of Trace Metals in the Tsengwen River and Estuary/ Jia-Jang Hung
On the Mixing of Waters at a Northern Offshore Area of Taiwan/ Ching-Sheng ChernJoe Wang
 
   
 
   

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