碩士 / 國立臺灣海洋大學 / 海洋環境資訊學系 / 97 / Abstract
The purpose of this study is to understand the sea-level rise problems at Taiwanese and East Asian coasts by in-situ tide data. Data quality is one of the key factors on the results of sea-level rise analysis. This study pays much attention on the data quality check issue. Criteria are proposed to cull the tide data. Finally, 13 stations at Taiwanese coasts and 54 stations in East Asian coasts are used in this study. The results show that the sea level at both Taiwanese and East Asian coasts are rising. At western Taiwanese coast, the average rate of sea level rise is 4.74 mm/yr. They are -0.85 mm/yr and 2.42 mm/yr at eastern and northern Taiwanese coasts respectively. Both of the average rates of sea level rise (Taiwanese coasts: 2.36 mm/yr, East Asian coasts: 2.42 mm/yr) are larger than the global average (1.7 mm/yr). The rates are increasing. The increasing velocities are even larger than the global average.
The findings also show that the areas with higher rising rate distribute in the significant subsidence areas and diastrophism areas such as the young islands and the Festoon Islands. For example, high rates at Keelung and Taiwanese offshore islands. They are 6.03 mm/yr (Keelung, 1980-2008) and 10.75 mm/yr (average of 4 offshore islands). The rising rates derived from ground-base tide stations are the relative rate of sea level rise. They are caused by global warming and other sources. Whatever the sources coming from, the level of relative sea level rise is the point that we have to engage in the planning and management of coastal zones.
| Identifer | oai:union.ndltd.org:TW/097NTOU5282009 |
| Date | January 2009 |
| Creators | Kuo-Chen Tseng, 曾國禎 |
| Contributors | Dong-Jiing Doong, 董東璟 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 135 |
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