台湾海峡通道工程的地震安全性问题

台湾海峡的地质构造背景及GPS网站的地壳运动速度观测数据表明,中国大陆福建沿海、台湾海峡与台湾岛北部地壳的水平运动基本保持了整体趋势;800余年的地震资料显示了台湾海峡及其附近地区的潜在地震危险性分布;中国地震动参数区划研究表明了台湾海峡北段的地震危险性较低。从防止地震影响角度考虑,选择拟议中的北线作为台湾海峡通道建设线路较为安全。

On the Seismic Safety Problem of the Taiwan Strait Passage Project

The regional tectonic background and recent GPS observation indicate that the Fujian coastal region of China mainland, the region of the Taiwan Strait and northern Taiwan island all show a generally homogenous horizontal motion with weak deformation. The historical earthquake records more than 800 years and modern instrumental data reveal that there is potential seismic risk in and around the Taiwan Strait region. Studies on the National Seismic Zoning Map of China (2001) demonstrate that the expected seismic risk in the northern part of the Taiwan Strait is lower than that in the middle and southern parts. The suggested northern route of the Taiwan Strait passage project seems to be relatively safe seismically.