碩士 / 國立臺灣海洋大學 / 海洋環境資訊學系 / 97 / Taiwan is located at the northwest of the Pacific Ocean, and typhoon invasion to the island occurs frequently during July to October every year. When a typhoon approaches Taiwan, it usually brings an amount of precipitation associated with strong southwest winds to the west coast of the island. Moreover, if it is just within high-tide period, huge volumes of sea water move into the Taiwan Strait from the both sides of the strait. It causes the water level piles up around the west coast. Meanwhile, there is a possibility that the accumulative sea water may break the embankment and inundate into the west coast due to a landward wind.
The main purpose of this study is using a commercial software package, Geographic Information System (GIS), to show the inundated potential in the coastal area around Taiwan by ignoring the protection of the embankment by intuition for early warning. The GIS has two advantages: (1) A database providing an integration and storage for huge volumes of various kinds of environmental data and (2) A Graphical User Interface providing a quick search and display, respectively. According to the historical record of the Central Weather Bureau (CWB), there are about 22 typhoons inducing severe disasters in Taiwan Island in recent years. Statistically, CWB has defined 9 major moving tracks of typhoon nearby Taiwan. In this study, we therefore select the 8 most representative typhoons to simulate inundation potential, in which each typhoon has different moving track. The sea level of typhoon surge is taken by the highest water level of the 11 tidal stations close to the study area. Then, the possible inundated area is estimated by including the Digital Elevation Model (DEM) data from CSRSR (Center for Space and Remote Sensing Research, National Central University).
The simulated result indicates that there exists inundated potential over all the low-lying area along the coast if we ignore the protection of the embankment. Especially, it is much more obvious in the west plains .
| Identifer | oai:union.ndltd.org:TW/097NTOU5282002 |
| Date | January 2009 |
| Creators | TZU-CHUN YANG, 楊子群 |
| Contributors | Yao-Tsai Lo, 羅耀財 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 82 |
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