摘要
本文选取湖北省巴东地区为研究区域,利用2015—2016年获取的011轨道的11幅和084轨道的12幅Sentinel-1影像,分别基于TCPIn SAR技术提取该区域的时序形变信息,结果分析表明:不同轨道的In SAR地表形变监测结果具有良好的一致性;巴东地区多处滑坡体在2015—2016年期间存在明显变形,其中黄土坡滑坡区域的LOS向平均形变速率高达-21.1 mm/a,童家坪滑坡区域LOS向平均形变速率达-14 mm/a;根据In SAR获取的巴东地区的时间序列结果表明部分滑坡呈现季节性形变。综合研究结果,利用Sentinel-1数据的时序In SAR技术可以为滑坡等地质灾害的监测和预警提供一种强有力的手段。
In this paper, based on the TCPInSAR technique, the temporal deformations information of Badong area are ex- tracted by using the 11 and 12 Sentinel-1 images from track 011 and track 084 during May 2015 to July 2016, respectively. The results indicate that the surface deformation monitoring results in different tracks are in good agreement with each other, the landslides in the Badong area have experienced obvious deformation during the period from 2015 to 2016, and the aver- age deformation rate in loess slope landslide area is up to -21.1 mm/year, the average deformation rate is up to -14 ram/year in Tongjiaping landslide area. Furthermore, the time series deformation results show that some landslide in the Badong area experience seasonal deformation. It is concluded that time series InSAR with Sentinel-1 data can provide a powerful mean for monitoring and early warning of landslide hazards.
作者
杨长江
易祎
赵蓉
YANG Chang-jiangl, YI yi ZHAO Rong(School of Geosciences and Info-Physics, Central South University, Changsha 410083 China Central Southern China Electric Power Design Institute Co., Ltd of China Power Engineering Consulting Group, Wuhan 430071 China)
出处
《科技创新与生产力》
2017年第4期55-58,63,共5页
Sci-tech Innovation and Productivity
基金
国家自然科学基金项目(41404013
4167040335)
国家"863"计划项目(2012AA121301)
高分辨率对地观测系统重大专项(民用部分)(03-Y20A11-9001-15/16)
湖南省杰出青年科学基金项目(13JJ1006)
中国电力工程顾问集团中南电力设计院有限公司科技项目(KJ-1A-KY201410-L01)
湖南省重点研发计划项目(2016SK2002)
