基于时序InSAR的地下核试验爆后形变监测与分析  

Monitoring and Analysis of Post-explosion Deformation of Underground Nuclear Test Based on Time Series InSAR

作　　者：刘智勇 王娟娟 LIU Zhiyong;WANG Juanjuan(School of Remote Sensing and Information Engineering,Wuhan University,Wuhan 430072,China;Troops of PLA 66444,Beijing 100094,China)

机构地区：[1]武汉大学遥感信息工程学院,湖北武汉430072 [2]66444部队,北京100094

出　　处：《地理空间信息》2023年第11期25-28,共4页Geospatial Information

摘　　要：地下核试验必然导致地表发生强烈形变,而在核爆后热辐射后效阶段,核试验区域仍会下沉,为更好地理解核爆后长时序沉降变化规律,利用时序InSAR技术处理了2017-09-10—2018-12-10的39景Sentinel-1SAR数据,得到朝鲜试验区第六次核爆后长时间序列的累积地表形变量。结果表明,万塔山山体表面在核试验后仍持续下沉;核试验区山顶约下沉30mm,而边坡的形变量更高,约为70~100mm。时序InSAR技术可为非天然地震所引起的地表形变提供可靠的监测结果,为核爆后长期监测提供技术支撑,具有重要的实用价值。The underground nuclear test will inevitably lead to strong deformation of ground surface,and the nuclear test area will still sink over time in the thermal radiation aftereffect stage after the nuclear explosion.In order to better understand the long-term deformation law after the nu-clear explosion,we used the time series InSAR technology to process the Sentinel-1 SAR data from September 10,2017 to December 10,2018,and obtained the cumulative surface deformation over the entire period after the sixth nuclear explosion conducted by the Democratic People’s Republic of Korea in the nuclear test area.The results show that the surface of Mt.Mantap still continues to sink after the nuclear test,the top of mountain in the nuclear test area sinks about 30 mm,while the deformation amount of slope is relatively high,about 70~100 mm.Time series In-SAR can provide a reliable monitoring results for the surface deformation caused by non-natural earthquakes,which means it showing strong ap-plication value in nuclear explosion monitoring.

关 键 词：时序InSAR 地下核试验 地表形变 

分 类 号：P237[天文地球—摄影测量与遥感]