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大同地震与华北北部地壳异态垂直运动
引用本文:杨国华,巩曰沐.大同地震与华北北部地壳异态垂直运动[J].中国地震,1994,10(1):13-18.
作者姓名:杨国华  巩曰沐
作者单位:国家地震局第一地形变监测中心,国家地震局综合观测队
摘    要:本文根据笔者提取异态信息的新数据处理方法,分析了华北北部地区近十年来地壳异态垂直运动,结果显示出以大同地震为界,震前的整个华北北部地区均处于应变的积累阶段,而且震源区具有非常清晰的四象限分布图像,呈一种典型的水平应力作用下的点源理论垂直形变场图象,震后整个华北北部地区则出现了截然相反的异态垂直运动,这又清楚地表明了具有弹性回跳的理论特征。迄今为止,这是我们唯一获得中强地震前后地壳异态垂直运动在空间

关 键 词:地震  地壳  异态垂直运动

The Datong Earthquake and the Abnormal Vertical Crustal Movement in North China
Yang Guobua, Gong Yuemu, Yang Chumhua.The Datong Earthquake and the Abnormal Vertical Crustal Movement in North China[J].Earthquake Research in China,1994,10(1):13-18.
Authors:Yang Guobua  Gong Yuemu  Yang Chumhua
Abstract:In this paper, the abnormal vertical crustal movement in North China are studied in the recent decade by authors' new method for the abnormal deformation information and the results show that North China had been in strain accumulation before the Datong earthquake(1989) and there had been a very obvious quadrantal distribution image in Datong area of North China and that there has been in strain recovery of movement or elastic rebound after the event. UP to now, this is that we have obtained a unique result which has the same movement property in such a large area from the space field, an opposite movement from the time field and the order structure of the image distrbution of the "field" and the "resource"before and after the event of more than Ms=6.0.
Keywords:North China  Abnormal vertical crustal movement  Datong earthquake Quadrantal distribution image  Elastic rebound  
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