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《Science of Surveying and Mapping》 2019-01
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The extraction and analysis of Kunming ground deformation characteristics based on PS-InSAR

ZHANG Jianming;GAN Shu;YUAN Xiping;QIU Pengrui;Faculty of Land Resource Engineering,Kunming University of Science and Technology;Plateau Mountain Spatial Information Survey Technique Application Engineering Research Center at Yunnan Province's University;Kunming Metallurgy College;  
Aiming at some possible up-and-down situations from 2015 to 2017,this paper revealed the ground deformation distribution characteristics and change rules in Kunming city with 34 descending images from Sentinel-1,by means of PS-InSAR and some GIS techniques.Meanwhile,in terms of geology,hydrology and human factors,the causes and influence factors of subsidence were summarized and analyzed.It showed that there was an extensive deformation in Kunming city,whose average velocity among±10 mm/a.Besides the north of Dianchi Lake,taking Yuhu,Guangwei and Hongjia as centers,3 subsidence zones with big areas and rapid subsidence rates had been discovered.Puji in northwest and Zongshuying around west ring road are two new discoveries in this paper.
【Fund】: 国家自然科学基金项目(41561083);; 云南省自然科学基金重点项目(2015FA016)
【CateGory Index】: P642.26
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