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以北京市典型地面沉降区为研究区,采用永久散射体技术——StamPS算法,利用覆盖北京地区的16幅ASAR图像进行永久散射体干涉处理,获得该区地面沉降监测信息,初步揭示了研究区地面沉降的空间分布特征。在此基础上,结合GIS空间分析方法,对地面沉降的风险范围、风险程度等进行综合分析,表明北京地区的地面沉降防治刻不容缓。 更多还原

【Abstract】 Land subsidence in Beijing has been an ongoing problem for the past four decades(since the later 1970s),which is induced by over-pumping groundwater continuously,becoming a negative effect on the sustainable economic development in plain areas.In this paper,Permanent Scatterers Interferometric Synthetic Aperture Radar(PS-InSAR)technique is used to detect and measure ground movement in this area(2003-2006).The detail information of deformation shows that spatial extent of subsidence is controlled...