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本文利用滇西、滇中地区大地垂直形变和跨断层短水准、短基线的监测资料进行综合分析论证,其结果表明:1996年2月滇西丽江70级地震前,该区应力场方向自1990年以来产生了由北东—北西的转变,震源区出现高达109mm的垂直差异运动1993—1996年有75%的断层形变测点相继出现不同程度的中期、短期和临震异常。大地垂直形变与断层形变的共性演变特征,为强震的预测提供了一个较好的震例
In this paper, the vertical deformation of the earth in western Yunnan and central Yunnan and the cross-fault short leveling and short baseline monitoring data are comprehensively analyzed. The results show that before the July 0 0 0 0 earthquake in Lijiang, Yunnan Province, the stress field direction Since 1990, a north-east-northwest transition has taken place, with up to 109 mm of vertically-diverging motion in the focal region. Seventy-five percent of the 1993-1996 faults show varying degrees of medium-, short- and mid-season apodism. Common evolvement characteristics of vertical deformation and fault deformation of the earth provide a better earthquake prediction for strong earthquakes