台湾强震对福建及其沿海地区地震形势的影响分析

Analysis of the Influence of Taiwan Strong Earthquakes on Earthquake Trends in Fujian and Its Coastal Area

分析了闽台地区构造动力环境、区域应力场和地震地质构造特征,通过对比1971年以来福建ML4.5级以上地震和台湾7级强震,发现台湾7级强震对福建ML4.5级以上地震触发作用明显,2006年12月26日台湾南部恒春海域7.2级地震发生后,福建地区中等地震活跃和GPS基准站季运动速度的显著变化进一步证明这个现象。

This paper analyzes the structural dynamic environment, regional stress field and seismic geological structure characteristics in Fujian and Taiwan. Through the comparison of earthquakes （ML≥4.5） in Fujian and earthquakes （Ms≥7） in Taiwan since 1971, it＇s shown that earthquakes （Ms≥〉7） in Taiwan have remarkable triggering effect to earthquakes （ML≥ 4.5） in Fujian. After the 7.2 earthquake of Hengchun sea in southern Taiwan on December 26, 2006, active moderate earthquakes in Fujian and violent changes of GPS quarterly movement velocity have further proved this phenomenon.