当前位置: X-MOL 学术Imaging Sci. J. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Assessment of subsidence in Delhi NCR due to groundwater depletion using TerraSAR-X and persistent scatterers interferometry
The Imaging Science Journal ( IF 1.1 ) Pub Date : 2018-12-04 , DOI: 10.1080/13682199.2018.1540166
Kapil Malik 1 , Dheeraj Kumar 1 , Daniele Perissin 2
Affiliation  

ABSTRACT Currently, high-resolution SAR data is available from different satellites. These datasets have been proved to be a strong source to monitor land subsidence. This paper aims to use high-resolution Persistent Scatterers Interferometry (PSI) to estimate the urban subsidence in Delhi NCR. TerraSAR-X images in 68 numbers spread over a period of 26 months during September 2011 – September 2013 have been used to assess the land surface subsidence. The study area is covered with large infrastructure projects such as railway lines, bridges, highways, metro bridges and tunnels. The resultant surface subsidence has been compared with the groundwater table data and it appears that most of the subsidence has been induced by the over-exploitation of groundwater in the area. In some areas, we can clearly see that the rapid construction activities contributing to the surface subsidence phenomenon. Development of a new construction project required groundwater to be used in the activity which impacts the groundwater table. This deterioration of the groundwater table has led to the land subsidence. The study suggests that there is an urgent need to address the issue of groundwater exploitation in the affected areas to check the current phenomenon of subsidence. This is a distinctive work carried out over the study area.

中文翻译:

使用 TerraSAR-X 和持久散射体干涉测量法评估德里 NCR 由于地下水枯竭引起的沉降

摘要 目前,可以从不同的卫星获得高分辨率的 SAR 数据。这些数据集已被证明是监测地面沉降的有力来源。本文旨在使用高分辨率持久散射干涉测量法 (PSI) 来估计德里 NCR 的城市沉降。2011 年 9 月至 2013 年 9 月期间,分布在 26 个月内的 68 幅 TerraSAR-X 图像已被用于评估地表沉降。研究区覆盖了铁路线、桥梁、高速公路、地铁桥梁和隧道等大型基础设施项目。已将由此产生的地表沉降与地下水位数据进行了比较,似乎大部分沉降是由该地区地下水的过度开采引起的。在一些地区,我们可以清楚地看到,快速的施工活动导致了地表下沉现象。新建筑项目的开发需要在影响地下水位的活动中使用地下水。地下水位的恶化导致了地面沉降。研究表明,迫切需要解决受影响地区的地下水开采问题,以检查当前的沉降现象。这是在研究区开展的一项与众不同的工作。研究表明,迫切需要解决受影响地区的地下水开采问题,以检查当前的沉降现象。这是在研究区开展的一项与众不同的工作。研究表明,迫切需要解决受影响地区的地下水开采问题,以检查当前的沉降现象。这是在研究区开展的一项与众不同的工作。
更新日期:2018-12-04
down
wechat
bug