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《Science of Surveying and Mapping》 2019-01
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Research on the change of urban subsidence based on InSAR and land cover of national geographic conditions

YANG Kui;YAN Li;HUANG Guoman;HU Yongqing;School of Geodesy and Geomatics,Wuhan University;Tianjin Institute of Surveying and Mapping;Chinese Academy of Surveying and Mapping;  
According to the problem that it is difficult for the tasks of both monitoring subsidence in large area and mechanism analysis,the paper utilize a new method aiming at monitoring and analysis urban subsidence with both InSAR and land cover of national geographic conditions.Firstly,multi-temporal subsidence results were achieved using the research result of registration strategy and SAR datasets(Envisat,Sentinel-1).Then the driving force of urban subsidence were derived through the spatial analysis with InSAR results and national geographic cover data.The methodology has been applied to Hanggu area(Tianjin),through the use of high-resolution SAR data and land cover data as input data.And a conclusion that the stepped-up subsidence is related with the reduction water area,increased construction of structures and houses.And the Overall Planning of Tianjin is used to validate the veracity of subsidence driving analysis.The experimental results show that the effectiveness of the proposed methodology.And the research results haves certain reference value for the subsequent decision-making in aspects of the prevention of subsidence disaster and sustainable development.
【CateGory Index】: P642.26
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