雷州半岛地裂缝及其构造蠕变成因

Ground Fissures in the Leizhou Peninsula and Their Tectonic Creep Origin

从1969年开始,雷州半岛每年或隔年频繁发生地裂缝,论述了雷州半岛地裂缝的分布特征,指出区内的地裂缝主要与地质构造、地壳活动(海岸抬升)相关,也和邻区强震、中强地震及区内的小震和微震部分相关,认为区内的地裂缝主要属构造蠕变地裂缝。推测与1969年其邻区阳江发生的6.4级强震对本区构造活动的激发并改变其地壳活动性有关。

This paper discusses the distribution features of ground fissures in the Leizhou Peninsula and points out that the ground fissures are interrelated with geological tectonics, crust movements, strong and moderate-strong earthquakes in adjacent areas and minor earthquakes in the local area. It is considered that most of ground fissures in this area belong to tectonic creep fissures. Ground fissures have occurred every year or every two-three years since 1969 in Leizhou Peninsula. It is speculated that those ground fissures are aroused by the earthquake of magnitude 6.4 in adjacent Yangjiang in 1969, which triggered tectonic movement and changed crust activity in the area.