Mapping land subsidence over the eastern Beijing city using satellite radar interferometry
作者机构:Geoscience and Earth Observing System Group(GEOS)School of Civil and Environmental EngineeringUNSW AustraliaSydneyAustralia Department of Surveying EngineeringGuangdong University of TechnologyGuangzhouPeople’s Republic of China
出 版 物:《International Journal of Digital Earth》 (国际数字地球学报(英文))
年 卷 期:2018年第11卷第5期
页 面:504-519页
核心收录:
学科分类:0202[经济学-应用经济学] 02[经济学] 020205[经济学-产业经济学] 0708[理学-地球物理学] 0835[工学-软件工程] 0704[理学-天文学] 0811[工学-控制科学与工程] 0812[工学-计算机科学与技术(可授工学、理学学位)]
基 金:This research was supported under Australian Research Council’s Discovery funding scheme[project number DP130101694] JAXA PI investigation project 1419–Automated interferometric analysis of L-band SAR satellite data for operational earthquake and volcano monitoring
主 题:Subsidence Beijing groundwater SAR interferometry
摘 要:Beijing City has suffered from groundwater-induced subsidence since the late 1930s and the over-exploration of groundwater could lead to subsidence as much as−12.0 cm yr−*** studies on the ground deformation at Beijing City mainly focused on the period before the year of 2014 when a mega-engineering project was launched to reduce water shortage in *** study the most recent ground deformation,19 L-band ALOS-1 PALSAR images(June 2007–January 2011),24 C-band Sentinel-1 SAR images(June 2015–November 2016)together with 9 ALOS-2 PALSAR acquisitions(September 2014–February 2017)were analysed in this *** measurements were exploited to verify the ALOS-1-based time series InSAR(TS-InSAR)result while Sentinel-1 and ALOS-2 result were cross-verified with each ***,the whole study area was divided into four sub-zones,and the result indicated that the subsidence rates over five townships,Cuigezhuan,Jinzhan,Liyuan,Songzhuang and Yanjiao were accelerating and more attentions should be *** the contrary,the town centre of Douge Zhuang township experienced a decreasing trend between these two ***,the time series measurements with respect to five selected measurement points and the profile line along the subsidence hot spots were analysed.