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Monitoring ground deformation in the Hangjiahu Plain using InSAR technique

机译:用INSAR技术监测杭卓湖平原地面变形

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Affected by over-exploration of groundwater for a long time, the Hangjiahu Plain in Zhejiang province, southeast of China, has suffering serious ground subsidence during the past several decades. In this paper, we investigate the time series InSAR technique for the generation of subsidence maps over this plain. 25 Radarsat-2 images acquired from Jan 2012 to Nov 2014 are used. The results show that serious subsidence has taken place in the north and southeast of Jiaxing, the east and north of Huzhou, and the north of Hangzhou. Meanwhile some rebound occurs in the east of Jiaxing and the southeast of Huzhou. The results are compared with 35 levelling measurements. The standard deviation of the error between the two data is 3.01mm, which demonstrate that time series InSAR technique has good accuracy for subsidence monitoring.
机译:受到地下水过度探索的影响很长时间,中国浙江省杭州湖普平原在中国东南部,在过去几十年中遭受了严重的地面沉降。在本文中,我们调查了在这种平原上产生沉降地图的时间序列Insar技术。 25使用从2012年1月到2014年11月收购的Radarsat-2图像。结果表明,嘉兴的北部和东南部,湖州东部和北部和杭州北部发生了严重的沉降。与此同时,在嘉兴东部和湖州东南部发生一些反弹。将结果与35级测量进行比较。两个数据之间的误差的标准偏差为3.01mm,这表明时间序列Insar技术具有良好的沉降监控精度。

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