利用InSAR技术研究黄土地区滑坡分布
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摘要
InSAR技术能够获取大面积、连续、高精度的地表垂直形变信息,可用来监测地震、火山、滑坡等自然灾害造成的地表形变。文章介绍了InSAR技术在监测陕北黄土地区滑坡中的应用,首先进行野外地质勘察和TM光学遥感影像解译,接着通过EnviSat SAR数据差分干涉处理,获取研究区干涉形变场,提取出滑坡位移量,最后详细分析黄草湾至董家寺沿线一带的滑坡变形范围,并划定出了4个有一定变形的重点监视区。
Continuous and high-accurate vertical deformation of a large area can be obtained with InSAR.The InSAR is an effective technology for monitoring the earth surface deformation caused by some natural disasters,such as earthquake,volcano eruption,and landslide.This paper introduces the application of InSAR on monitoring landslides in loess area in Shanxi province.Firstly,we carried the wild geological investigation and optical interpretation of TM remote sensing images.Then,with D-InSAR processing of EnviSat SAR data,we obtained the interferometric deformation field and the displacement of the study area.Finally,we detailedly analyzed the deformation ranges along Huangcaowan-Dongjiasi line,and plotted four important monitoring areas where great displacement occured.
Continuous and high-accurate vertical deformation of a large area can be obtained with InSAR.The InSAR is an effective technology for monitoring the earth surface deformation caused by some natural disasters,such as earthquake,volcano eruption,and landslide.This paper introduces the application of InSAR on monitoring landslides in loess area in Shanxi province.Firstly,we carried the wild geological investigation and optical interpretation of TM remote sensing images.Then,with D-InSAR processing of EnviSat SAR data,we obtained the interferometric deformation field and the displacement of the study area.Finally,we detailedly analyzed the deformation ranges along Huangcaowan-Dongjiasi line,and plotted four important monitoring areas where great displacement occured.
引文
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[3]王超,刘智,张红,等.张北—尚义地震同震形变场雷达差分干涉测量[J].科学通报,2000,45(23):2550-2555.
[4]马超,单新建.星载合成孔径雷达差分干涉测量(D-InSAR)技术在形变监测中的应用概述[J].中国地震,2004,20(4):410-418.
[5]Squarzoni C,Delacourt C,Allemand P.Nine years ofspatial and temporal evolution of the La Valette landslideobserved by SAR interferometry[J].EngineeringGeology,2003,68:53-66.
[6]Leva D,Rivolta C,Binda Rossetti I,et al.Using aground based interferometric synthetic aperture radar(GBinSAR)sensor to monitor a landslide in Japan[C].IEEE,2005,6:4096-4099.
[7]Toshifumi Moriyama,Seiho Uratsuka,ToshihikoUmehara,et al.Polarimetric analysis of the disastrousenvironment by using Pi-SAR[C].IEEE,2005,6:4084-4087.
[8]Perski Z,Jura D.ERS SAR Interferometry for LandSubsidence Detection in Coal Mining Areas[J].EarthObservation Quarterly,1999:25-29.
[9]国家地震局《鄂尔多斯周缘活动断裂系》课题组.鄂尔多斯周缘活动断裂系[M].北京:地质出版社,1988:5-19.
[10]李建华,申旭辉.青藏高原东北隅弧束断裂与南鄂尔多斯环形构造[J].地震地质,2001,23(1):116-121.
[11]陕西省滑坡工作办公室.陕西省滑坡灾害预测图[M].西安:西安地图出版社,1995.
[12]张天曾.黄土高原论纲[M].北京:中国环境科学出版社,1993.
[13]安芷生,肖举东,张景昭,等.季风与最近13万年黄土高原的气候历史[M]//黄土第四纪地质全球变化(二).刘东生.北京:科学出版社,1990:1-151.
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