中文摘要：

基于合成孔径雷达干涉（interferometric synthetic aperture radar,INSAR）技术的山区城市地面沉降研究,因地形复杂、植被覆盖等因素开展较少。首次在攀枝花市,利用12景2009-2010ENVISAT ASAR数据,采用短基线集方法开展大范围、长时间监测。结果表明,攀枝花市东区地面沉降较大,沉降的平均速率高达48 mm/年;西区沉降较小,沉降平均速率10 mm/年。推测原因多为城市化建设所致地面荷载;而市东北方向的露天矿区,因连续开采所致,不同时期同一地点的地表变化,导致高相干点在此区域分散稀疏,不能表明是否有沉降现象。

英文摘要：

The research on monitoring the ground subsidence in mountains city is relative few since the complex topography and high vegetation cover. The first research about carrying out the large scale,long time monitoring by 12 2009 - 2010 ENVISAT ASAR images in Panzhihua City was presented. The results reveal that serval subsidence region are founded in eastern areas of the city with the max linear velocity 48 mm / a,and the western areas of the city is relatived stable with the average annual subsidence velocity 10 mm / a. The probably hypothesis is because of human being＇s urbanization. However,the high coherence points were founded sparsely in the open-pit mines which was located in the northeast of city. Even the same place changes in the different periods caused by continuous mining,and some actual deformations has not been detected. Thus,the results can＇t prove the ground subsidence in the open-pit mines.