"Probabilities Map" for Active Faults in Taiwan
Central Geological Survey (CGS) release a map (Fig.1) of active fault probabilities for Taiwan Island, in the 10th Anniversary of Japan's 311 Earthquake. The map showed the 50-year conditional probability of earthquakes for the 33 active faults in Taiwan. Actually, CGS has been publishing active fault maps in Taiwan since 1998. There are 33 active faults published in the 2012 version of the active fault map.
Because Taiwan is located at the boundary between the Philippine Sea Plate to the east and the Eurasian Plate to the west. Due to the fast plate motions, it is a country with high seismic activities. According to the past 100 year records, the most destructive earthquakes in Taiwan were mainly caused by inland active faults.
In addition, the active fault potential information was required strongly after the huge impacts of the economy and society due to the 1999 Chi-chi earthquake for the hazard seismic assessment requirement of public construction. Therefore, the investigations and researches related to the active faults have been one of the hot topics in the earth science community in Taiwan in recent years.
In this time, CGS focused on the improvement of fault parameters and earthquake probability assessment of the 33 active faults in Taiwan. This map for the practice in engineer application, it can be needed to estimate of maximum seismic intensities for the design of buildings, critical facilities and lifelines. Also, for the application of public education, it can expand public education to strengthen the perspective for earthquake hazard and risk mitigation.
Spokesman of the Central Geological Survey of Ministry of Economic Affairs:
Deputy Director Wang, Yunshuen
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Contact: Section Chief Chen, Chien-Liang,
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