摘要
基于PS—InSAR技术，利用欧空局28景ENVISATASAR数据，运用小基线集干涉处理方法，提取并分析了丽江断裂2003～2010年的平均形变速率。研究结果显示：（1）丽江断裂具左旋走滑形变特征；（2）年平均LOS向形变速率在3～5mm／a之间，与地质资料较吻合。该研究为丽江地区地震预测提供一种可靠的断裂带活动数据，但丽江断裂进入城区后受城市化活动影响，断裂形变与地面沉降信息共存，较难分离。
Based on the PS-InSAR technology, using ENVISAT ASAR data of ESA （ European Space Agency）, we extracted and analyzed the average deformation rate of the Lijiang Fault from 2003 to 2010 by small baseline set interference processing method. The research results demonstrated that： （1） The deformation characteristic of Lijiang Fault showed the sinistral strike-slip; （2） The annual deformation rate in LOS direction was between 3 mm/a and 5 mm/a, and consistented with geological data. This research could provide the credible fault zone activity date for the earthquake forecast of the Lijiang region. However, because of the section of Lijiang Fault into the city was affected by urbanization, and fault deformation and ground subsidence information of the Li- jiang Fault were coexisted, it was difficult to separate.
出处
《地震研究》
CSCD
北大核心
2013年第3期319-323,407,共5页
Journal of Seismological Research
基金
防灾减灾青年科技基金(200908)
中央高校基本科研业务费专项资金(ZY20120102)
防灾科技学院教研项目(2012B01)共同资助
