碩士 / 國立臺灣大學 / 海洋研究所 / 86 / Abstract
The global warming leads to an increase in sea level, due to the combined
effects of thermal expansion of the oceans, enhanced melting of mountain
glaciers and polar ice sheet. The main impacts of sea-level rise to coastal
environments are erosion, inundation and saltwater intrusion. To assess the
vulnerability of the coastal environment of Taiwan, this study has adapted the
Coastal Vulnerability Index (CVI) technique developed by Gornitz (1990). For
the entire coastline of Taiwan, a coastal GIS that contains as
many as 8 variables
including lithology, elevation, relief, shoreline stability,
relative sea-level rise,
wave height, tidal range, and frequency of typhoon is developed. The CVI then
was complied based on these variables and coasts with the largest CVI, thus
most vulnerable to sea-level rise, could be identified.
The result of CVI evaluation shows that the most vulnerable coasts are located
in low-lying areas such as estuaries, tidal flats, beaches on
both west and east
coast. Coasts of Pali, Yungan, Putai, Chiang chun, Peimen, Ilan, Fulung,
Hualien, Hoping, Kaohsiung being most vulnerable. If future sea-level rise of
2mm/yr is considered, additional coastal area in Nanliao, Tungchiang,
Chengkang, Kaohsiung chiang will be considered most vulnerable. Based on the
result derived from Q-mode factor analysis of the coastal
variables, the coastline
of Taiwan can be classified into three coastal types with eleven coastal
segments.
| Identifer | oai:union.ndltd.org:TW/086NTU00274010 |
| Date | January 1998 |
| Creators | Chien, shih-feng, 簡仕峰 |
| Contributors | Liu Hsi-Chiang, Hsu Chien-Chung, 施學銘, --- |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 84 |
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