华南强震动力分析  

Dynamic Analysis on Strong Earthquakes in South China

作　　者：沈繁銮[1] 杨马陵[2] 李志雄[1] 袁锡文 郑萍[1] 

机构地区：[1]海南省地震局,海南海口570203 [2]广东省地震局,广东广州510070

出　　处：《华南地震》2010年第1期1-5,共5页South China Journal of Seismology

摘　　要：根据华南陆缘扩张的动力来源和现代构造运动特征及强震震源断层最新活动性质,通过对华南地震活动与地球自转速率变化、GPS观测基线变化、理论面应变的关系分析,认为地幔流向洋侧的蠕散是造成华南现今地壳变形和张剪性构造运动为主的原因,而区域地球的波动膨胀拉张是引发强震的动力。Based on the dynamic source of continental margin spreading , the characteristic of modern tectonic movement and the newest motion properties of focal faults of strong earthquakes in South China and the analysis on relations between the variations of earth rotation rater, GPS observation base lines and theoretical surface strain and the earthquakes, major cause of modern diastrophism and tension-shear tectonic movement in spread of mantle flow toward the ocean side, and the power initiating strong expansion or extension waves in regional earth.

关 键 词：强震 华南 动力机制 

分 类 号：P315.914[天文地球—地震学]