摘要
地面沉降是每一个城市都存在的普遍现象,它严重影响到社会经济的发展,严重时甚至会威胁到人们的生命安全。InSAR技术为地面沉降监测提供了一种全新、高效、实用的方法,与传统的测量方法相比具有很多优势。以太湖周围部分地区为研究区域,获取了2004-2008年期间覆盖该区域的30景ENVISAT ASAR数据,利用PS-InSAR技术成功提取了足够数量的PS点并对PS点的形变信息进行克里金插值,获得了该地区2004～2008年间的地表沉降速率图。通过分析,得到城市地面沉降状况及态势,此结果与实际情况吻合,证明PS-InSAR技术能够应用于长三角水网地区的地面沉降监测中,可为相关部门进行城市规划及沉降治理提供辅助和参考。
Land subsidence is a common phenomenon in China.It seriously affects the development of social economy,and even threatens people’s lives.InSAR technology provides a new,efficient and practical method for ground subsidence monitoring.It has many advantages compared with traditional measurement methods.In recent years,it has become one of the hotspots of research at home and abroad.In this paper,some areas around Taihu Lake are selected as study areas,and 30 scenes of ENVISAT ASAR data covering the area during 2004-2008 are obtained.A sufficient number of PS points are successfully extracted by PS-InSAR technology and the deformation information of PS points is analyzed with Gold interpolation,then the map of surface subsidence rate is obtained from 2004 to 2008.Through the analysis of the result,the urban subsidence status and situation are obtained.This study can provide corresponding reference for urban planning and settlement management for relevant departments.
作者
陈媛媛
魏浩翰
翁建
Chen Yuan-yuan;Wei Hao-han;Weng Jian(College of Civil Engineering,Nanjing Forestry University,Nanjing Jiangsu 210037,China)
出处
《现代测绘》
2018年第6期10-12,共3页
Modern Surveying and Mapping
基金
江苏省测绘地理信息科研项目(JSCHKY201708)
江苏省自然科学基金资助项目(BK20180779)
南京林业大学青年科技创新基金项目(CX2018015)
