https://scholars.lib.ntu.edu.tw/handle/123456789/493153
標題: | Earthquake probability assessment for the active faults in central Taiwan: A case study | 作者: | Lee, Y.-R. Cheng, C.-T. Shao, K.-S. Chuang, Y.-R. Hu, J.-C. Lai, T.-H. Lu, S.-T. JYR-CHING HU |
關鍵字: | active fault; assessment method; Chi-Chi earthquake 1999; earthquake magnitude; plate motion; probability; seismic hazard; Taiwan; Tachia | 公開日期: | 2016 | 卷: | 27 | 期: | 3 | 起(迄)頁: | 341-357 | 來源出版物: | Terrestrial, Atmospheric and Oceanic Sciences | 摘要: | Frequent high seismic activities occur in Taiwan due to fast plate motions. According to the historical records the most destructive earthquakes in Taiwan were caused mainly by inland active faults. The Central Geological Survey (CGS) of Taiwan has published active fault maps in Taiwan since 1998. There are 33 active faults noted in the 2012 active fault map. After the Chi-Chi earthquake, CGS launched a series of projects to investigate the details to better understand each active fault in Taiwan. This article collected this data to develop active fault parameters and referred to certain experiences from Japan and the United States to establish a methodology for earthquake probability assessment via active faults. We consider the active faults in Central Taiwan as a good example to present the earthquake probability assessment process and results. The appropriate "probability model" was used to estimate the conditional probability where M ≥ 6.5 and M ≥ 7.0 earthquakes. Our result shows that the highest earthquake probability for M ≥ 6.5 earthquake occurring in 30, 50, and 100 years in Central Taiwan is the Tachia-Changhua fault system. Conversely, the lowest earthquake probability is the Chelungpu fault. The goal of our research is to calculate the earthquake probability of the 33 active faults in Taiwan. The active fault parameters are important information that can be applied in the following seismic hazard analysis and seismic simulation. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/493153 | DOI: | 10.3319/TAO.2016.03.24.01(TEM) |
顯示於: | 地質科學系 |
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