南北地震带北段强震形变异常特征与预测指标研究
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摘要
利用南北地震带北段及附近地区上世纪70年代以来的区域水准、跨断层短测线和90年代以来的GPS、流动重力等监测资料,结合地质构造和监测区发生的几次6级左右及以上震例,采用定性与定量相结合的方法分析研究了与地震有关的构造形变异常的基本特征及可能的机理,初步总结了基于这些不同尺度(类型)的构造形变异常进行强震中期预测的一些指标判据。
Using the regional leveling,fault-crossing short survey since 1970s,and GPS,mobile gravitation observation data since 1990s in the north segment of the south-north seismic belt of China,combining with geologic structure and recent earthquakes(MS≥6.0) in this area,the basic characteristics of structure deformation anomalies related to strong earthquakes in the area and possible mechanism are analyzed and studied in quantitative and qualitative ways.In differ scale(kind),the strong earthquake prediction index criterions based on the structure deformation anomaly are summarized.
Using the regional leveling,fault-crossing short survey since 1970s,and GPS,mobile gravitation observation data since 1990s in the north segment of the south-north seismic belt of China,combining with geologic structure and recent earthquakes(MS≥6.0) in this area,the basic characteristics of structure deformation anomalies related to strong earthquakes in the area and possible mechanism are analyzed and studied in quantitative and qualitative ways.In differ scale(kind),the strong earthquake prediction index criterions based on the structure deformation anomaly are summarized.
引文
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[2]江在森,丁平,王双绪,等.中国西部大地形变监测与地震预测[M].北京:地震出版社,2001.
[3]张希,江在森,王琪,等.青藏高原北部地区构造变形特征及与强震关系[J].地球物理学进展,2004,19(2):363-371.
[4]江在森,张希,王双绪,等.利用地形变观测量求解地壳水平应变场的方法[J].地震,1999,19(1):41-48.
[5]王双绪,张希,张晓亮.昆仑MS8.1地震前青藏块体北、东缘水平运动变形的关联特征[J].中国地震,2005,21(1),41-49.
[6]张希,张四新,王双绪,等.北祁连-河西地区地壳垂直运动的时空演化负位错模型与强震地点预测[J].大地测量与地球动力学,2005,25(1):40-46.
[7]巩守文.共和6.9级地震垂直形变场位错模式及其演化特征的研究[J].地震学报,1993,15(3):289-295.
[8]祝意青,胡斌,张永志.永登5.8级地震前后的重力场动态图像特征研究[J].地壳形变与地震,1999,19(1),71-77.
[9]张希,江在森,王双绪,等.断层形变的应变强度比动态图像与震例综合研究[J].地壳形变与地震,2001,21(2),37-42.
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