摘要
利用GPS连续观测站资料研究了2001年11月14日发生的昆仑山口西8.1地震前的面膨胀现象。选取了震中周边6个GPS基准站的连续观测资料,计算了4个三角形的面应变,并分析了区域面膨胀的空间分布和时变特征,利用大尺度地面观测资料可能发现地震前存在的区域面(体)膨胀现象,或可将其作为判断失稳压临界状态前兆的依据。
This paper shows the surface expansion phenomenon before Kunlun earthquake on September 14, 2001 by using GPS surveying data. Four adjacent triangles are combined by 6 GPS stations around the epicenter of Kunlun earthquake. Regional surface expansion of the 4 triangles is calculated. Its space distribution and temporal change characteristics are analyzed. The evidence of surface expansion before the earthquake is approved using large scale surveying data. This may be used for judging the precursor of strong earthquakes.
出处
《地震》
CSCD
北大核心
2006年第2期68-72,共5页
Earthquake
基金
空间对地观测技术应用实验室建设项目
