华南强震动力分析
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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,we thought that the major cause of modern diastrophism and tension-shear tectonic movement in South China was the spread of mantle flow toward the ocean side,and the power initiating strong earthquakes was the expansion or extension waves in regional earth.
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,we thought that the major cause of modern diastrophism and tension-shear tectonic movement in South China was the spread of mantle flow toward the ocean side,and the power initiating strong earthquakes was the expansion or extension waves in regional earth.
引文
[1]中国科学院南海海洋研究所海洋地质构造研究室.南海地质构造与陆缘扩张[M].北京:科学出版社,1988.
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[5]杨林章,张晶,郗钦文.昆仑山口西8.1级地震前的区域面膨胀现象[J].地震,2006,26(2):68-72.
[2]马杏垣.中国岩石圈动力学纲要[M].北京:地震出版社,1987.
[3]丁国瑜.中国岩石圈动力学概论[M].北京:地震出版社,1991.
[4]魏柏林.东南沿海地震活动特征[M].北京:地震出版社,2001.
[5]杨林章,张晶,郗钦文.昆仑山口西8.1级地震前的区域面膨胀现象[J].地震,2006,26(2):68-72.
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