| Technology Application |
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Seasonal subsidence-rebound and ground water level changes monitoring by using coherent target InSAR technique：A case study of Dezhou, Shandong |
| GE Daqing1,2, YIN Yueping3, WANG Yan2, ZHANG Ling2, GUO Xiaofang2, WANG Yi2 |
1. School of Water Resources and Environment, China University of Geosciences(Beijing), Beijing 100083, China;
2. China Aero Geophysical Surveying and Remote Sensing Center for Land and Resources, Beijing 100083, China;
3. China Institute for Geo-Environmental Monitoring, Beijing 100081, China |
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Abstract Overexploitation of groundwater is the major factor responsible for ground subsidence in many areas. The development of the SAR Interferometry (InSAR) technique provides a powerful tool for revealing the detailed evolution of subsidence with the advantages of large coverage, dense spatial sampling and high temporal frequency. In this study, the authors present an example of complex deformation procedure monitoring by time series analysis of coherent point target with small baseline subsets. Taking Dezhou as the study area, the authors analyzed the subsidence evolution during the period from January 2004 to October 2010 by using the ENVISAT ASAR data. The causes of the seasonal subsidence and rebound were investigated by analyzing the groundwater pumping as well as leveling surveying and weather data. It can be concluded that the continuous overexploitation of the groundwater and the yearly rainfall changes are the major factors responsible for seasonal subsidence and rebound, which result in the close temporal relationship between subsidence and water level changes.
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| Keywords
passive microwave remote sensing
land surface temperature
statistical algorithm
physical retrieval model
neural network algorithm
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Issue Date: 08 January 2014
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2014,
Vol. 26
