摘要
以成都市中心城区及周边区域为例,利用PS-InSAR技术对2016-2018年间32景升轨Sentinel-1A数据进行处理,获取地面形变数据,进行时序分析与相干性分析。结果显示,成都市处于一个西抬东降的格局,年形变速率范围-22.9~26.5mm/y,累积沉降量达到-45~59mm。研究结果表明,最近几年城市化进程的加快和轨道交通建设的快速发展,是导致成都市中心城区部分区域地面沉降的主要原因,另外成都平原的地理位置及地下水分布,对城市部分区域的抬升和沉降也有影响。
By the example of central and surrounding areas of Chengdu City,this study makes time series analysis and coherence analysis based on data on the ground deformation from Sentinel-1A data of 32 ascending fields during 2016-2018 by means of PS-InSAR technology.The results show that Chengdu City is characterized by in ascending west and descending east,with maximum deformation velocity ranging from-22.9 to 26.5mm/y,and accumulative subsidence of-45~59 mm.And the urbanization and rapid development of rail transit construction are responsible for land subsidence in parts of the central city.In addition,geographical location and groundwater distribution of the Chengdu Plain have influence on the deformation of some areas.
作者
薛廉
吴森
唐侨
唐晓玲
汪天寿
匡野
XUE Lian;WU Sen;TANG Qiao;TANG Xiao-ling;ANG Tian-shou;KUANG Ye(Sichuan Research Institute of Geological Engineering Survey,Chengdu610072)
出处
《四川地质学报》
2019年第3期512-517,共6页
Acta Geologica Sichuan
基金
成都市科技惠民项目(2016-HM01-00424-SF):成都市城市化建设中地质灾害早期识别技术研究
成都市国土资源局成都市城市地下空间资源地质调查项目
关键词
成都市
地表形变
PS-INSAR
监测
Chengdu City
ground deformation
PS-InSAR
deformation monitoring
