陕西地震活动规律与活动断裂的关系
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摘要
陕西省自公元前1177年有地震记载以来，至1980年全省共发生4级以上地震70次，其中关中地区占45次。陕西主要属于华北地震区的汾渭地震带，次为南北地震带的六盘山地震带和属于华南地震区的秦岭─大巴山地震区。地震活动具有周期性、迁移性和重复性特点。地震活动与活动构造关系密切。活动性强的构造断裂应力容易集中，当能量积累到一定程度时，需要释放在其敏感部位而发震。
Seventy seismic activity, more than 4-magnitude, have been recorded from 1177 B. C.to 1980 in Shaanxi province, of which about forty five occured in Guan Zhong region.Shaanxi province belongs to Fen Wei seismic belt in the seismic region in the north part of China, which also belongs to the seismic belt of Liu Pan mountain and the seismic region of Qinling-Da Ba mountain. The characteristics of seismic activity are periodiclty, migration and recurrence. Seismic activity is closely related with active fault. The stress of high active fault is concentried easily, when the energy accumulation is too much great to release, the earthquake is caused in the sensity location.
Seventy seismic activity, more than 4-magnitude, have been recorded from 1177 B. C.to 1980 in Shaanxi province, of which about forty five occured in Guan Zhong region.Shaanxi province belongs to Fen Wei seismic belt in the seismic region in the north part of China, which also belongs to the seismic belt of Liu Pan mountain and the seismic region of Qinling-Da Ba mountain. The characteristics of seismic activity are periodiclty, migration and recurrence. Seismic activity is closely related with active fault. The stress of high active fault is concentried easily, when the energy accumulation is too much great to release, the earthquake is caused in the sensity location.
引文
1李四光.论地震.北京:地质出版社,1977
2中国科学院地质研究所.中国地震地质概论.北京:科学出版社,1977
3国家地震局.中国地震简目.北京:地震出版社,1977
4熊润滑等.西安地裂缝群特征及成因机制研究.陕西地风 1993(1)
5贺明静.华县地震灾害研究.西安:陕西人民教育出版社,1990
2中国科学院地质研究所.中国地震地质概论.北京:科学出版社,1977
3国家地震局.中国地震简目.北京:地震出版社,1977
4熊润滑等.西安地裂缝群特征及成因机制研究.陕西地风 1993(1)
5贺明静.华县地震灾害研究.西安:陕西人民教育出版社,1990
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