碩士 / 國立成功大學 / 水利及海洋工程學系 / 103 / Taiwan is located at seismic zones. If the undersea trench near Taiwan triggers an earthquake over 9.0 on the Richter scale, the tsunami generated will impact directly on the coastal areas. The tsunami wave yields different impacts on flooding potential occurring at the coastal areas due to land topography and surface features.
We apply the COMCOT (COrnell Multigrid COupled Tsunami model) model to simulate the tsunami transport of a scale 9.5 earthquake from the Ryukyu Trench dislocation. We also set up multiple tide observation stations in offshore areas during the simulation to observe changes in free surface when tsunami waves passed. The simulation results of the COMCOT model are then incorporated into the Physiographic Inundation Model as the downstream boundaries. We simulate the flooding potential of the Lanyang Plain with two scenarios: tsunami only, and tsunami and Typhoon Simlaku, 2008.
The results show that tsunami generated from the Ryukyu Trench arrives the study area in 19 minutes; the first tsunami wave (the highest wave) with a height of 13.52 meters strikes the study area in 55 minutes. The results of flooding potential for the first scenario (tsunami only) show that the maximum flooded depth is 5 meters and the farthest flooded distance is 10.6 km. In the second scenario (tsunami and Typhoon Simlaku), the maximum flooded depth is 12 meters and the farthest flooded distance is 11.2 km. Comparing with these two scenarios, an increase of 7610 hectares in flooding areas can be observed since tsunami waves hinders the drainage of river channels.
| Identifer | oai:union.ndltd.org:TW/103NCKU5083002 |
| Date | January 2014 |
| Creators | Jia-HongJhou, 周嘉宏 |
| Contributors | Wei-Cheng Lo, 羅偉誠 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 79 |
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