碩士 / 國立臺灣大學 / 海洋研究所 / 101 / Taiwan Strait (TS) connects the South China Sea and East China Sea (ECS). The transport of water, nutrient and heat through TS is important to the marine ecosystem in TS and ECS. However, measuring the flow velocity and the transport in Taiwan Strait is a very difficult task. There are much fewer winter surveys in TS, and there is only one set of 2.5-month data from bottom-mount ADCP array. The ship-board ADCP on TaiMa ferry collects nearly daily velocity field U between Keelung and Matsu, except during days of severe sea states. The total volume transport Q through TS is derived from integrating U across TS. High frequency radars, like the CODAR stations that were built and operated by Taiwan Ocean Research Center may provide hourly data of surface current velocity Vc. After testing the accuracy of Vc, finding the area where Vc gives good M2 tidal current data, and removing the wind induced current velocity from Vc, one may derive (1) the barotropic velocity Vbt, or the vertically averaged velocity and (2) the transport per unit width. The result is compared with the sb-ADCP data from Taima ferry. The volume transport q crossing the cruise line between 120.854°E and 121.335°E is (A) q=0.67 Sv, if Vbt is derived from the correlation between Vbc(z) =Vc-Va(z) and the wind, or (B) q=0.78 Sv if Vbt = Vc – Vw, where Vw is the wind-driven surface velocity that was proposed by Matsuoka (2003), i.e. Vw equals 3.4% of wind speed, in the direction 37 degrees clockwise from the wind direction. Taima ferry measured q being 0.64 Sv. If CODAR coverage may extend across TS, then q becomes Q.
| Identifer | oai:union.ndltd.org:TW/101NTU05279017 |
| Date | January 2013 |
| Creators | Wei-Teng Tsai, 蔡維騰 |
| Contributors | Cho-Teng Liu, 劉倬騰 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 62 |
Page generated in 0.0016 seconds