Primary Investigation of Formation and Genetic Mechanism of Land Subsidence Based on PS-InSAR Technology in Beijing
LEI Kun-chao1, CHEN Bei-bei2, JIA San-man1, WANG Shu-fang1, LUO Yong1
1. Beijing Institute of Hydrogeology and Engineering Geology, Beijing 100195, China 2. College of Resources Environment and Tourism, Capital Normal University, Beijing 100048, China
Abstract：The present paper adopts permanent scatterer interferometric synthetic aperture radar(PS-InSAR)technique to obtain land subsidence information in Beijing plain area. Then, combined with the time series of meteorological data, groundwater dynamic monitoring data，interferometric data and geological structure data, the formation and evolution mechanism of land subsidence were revealed. The results show that (1) Beijing regional land subsidence characteristics are obvious, more land subsidence funnel areas are interconnected, the settlement is influenced by rainfall recharge and exhibits seasonal fluctuation characteristics; (2) The land subsidence center and groundwater drawdown funnel centre are not fully consistent, unconfined aquifer and shallow confined aquifer are the major contribution factors and have greater impact on the land subsidence; (3) Land subsidence mainly occurred in the clay layer with a thickness of 50~70 m; (4) Land subsidence caused by tectonic controls is significant and the deformation gradient is great on both sides of the fault.
雷坤超1，陈蓓蓓2，贾三满1，王树芳1，罗 勇1 . 基于PS-InSAR技术的北京地面沉降特征及成因初探 [J]. 光谱学与光谱分析, 2014, 34(08): 2185-2189.
LEI Kun-chao1, CHEN Bei-bei2, JIA San-man1, WANG Shu-fang1, LUO Yong1 . Primary Investigation of Formation and Genetic Mechanism of Land Subsidence Based on PS-InSAR Technology in Beijing. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(08): 2185-2189.
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