The analysis of land subsidence in Tianjin basing on interferometric synthetic aperture radar (InSAR) technique

Yanan Dang, Huili Gong, Xiaojuan Li, Beibei Chen, Jiwei Li

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Tianjin is one of the cities in the north of China where the land subsidence has most seriously developed. The land subsidence has been lasting for 50 years. In the paper, we use permanent scatterers interferometric synthetic aperture radar (PS-InSAR) technique to detect and measure ground movement in this area. The time serial measured results demonstrate that land subsidence in the study area, is controlled by geological tectonics, especially in south deformation areas. The detail information of deformation shows that the tendency and spatial extent of subsidence is controlled by geologic structures. Comparing the subsidence extracted by PS-InSAR technique to the leveling survey, both of them are mostly consistent. Meanwhile, it is revealled that different aquifers make different contributions to land subsidence. At last, we should take measures including set limit to groundwater exploitation, save water, and replenish groundwater artificially, also some new techniques (eg,InSAR) in measuring ground deformation are used to prevent and slow the land subsidence.

Original languageEnglish (US)
Title of host publication2011 International Conference on Multimedia Technology, ICMT 2011
Pages5116-5120
Number of pages5
DOIs
StatePublished - 2011
Externally publishedYes
Event2nd International Conference on Multimedia Technology, ICMT 2011 - Hangzhou, China
Duration: Jul 26 2011Jul 28 2011

Publication series

Name2011 International Conference on Multimedia Technology, ICMT 2011

Conference

Conference2nd International Conference on Multimedia Technology, ICMT 2011
CountryChina
CityHangzhou
Period7/26/117/28/11

Keywords

  • Groundwater
  • Interferometric Synthetic Aperture Radar (InSAR)
  • Land subsidence
  • Permanent Scatterers (PS)

ASJC Scopus subject areas

  • Computer Graphics and Computer-Aided Design
  • Computer Vision and Pattern Recognition
  • Human-Computer Interaction
  • Software

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