Mapping overall taiyuan graben basin deformation with SBAS-InSAR technique

2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS) Pub Date : 2016-07-10 DOI:10.1109/IGARSS.2016.7729743

Yuanyuan Liu, Chaoying Zhao, Qin Zhang, Chengsheng Yang, Jing Zhang

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Abstract

Taiyuan graben basin has been suffering serious ground deformation due to the combined effects of groundwater pumping, ground fissures and faults. However, most ground deformation monitoring mainly focus on the single city, thus it is difficult to reveal the regional extent of the deformation. Fifty-five ALOS/PALSAR images acquired from three adjacent tracks from 2007 to 2011 are used to obtain annual deformation rate based on Small Baseline Subsets (SBAS-InSAR) technique. The standard deviations of deformation differences between two adjacent tracks are 3.7mm/a and 4.2mm/a, respectively. Large subsidence funnels mainly occur in the regions, where the groundwater pumping is intensive. The maximum subsidence is observed in Qingxu with the land subsidence rate up to 240mm/a, while regions with subsidence rates ranging from 50 to 90mm/a are detected in other locations. Meanwhile, significant deformation differences are retrieved in both sides of the faults, which could be explained as the faults-controlled deformation.

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基于SBAS-InSAR技术的太原地堑盆地整体变形制图

太原地堑盆地受地下水抽吸、地裂缝和断裂的共同作用，地表变形严重。然而，大多数地面变形监测主要集中在单个城市，难以揭示变形的区域范围。基于小基线子集(SBAS-InSAR)技术，利用2007 - 2011年在三个相邻轨道上获取的55幅ALOS/PALSAR图像，获得了年变形率。相邻两条轨道的变形差标准差分别为3.7mm/a和4.2mm/a。大型沉陷漏斗主要发生在抽水强度较大的地区。青徐地区地表沉降最大，沉降速率达240mm/a，其他地区沉降速率在50 ~ 90mm/a之间。同时，在断层两侧恢复到明显的变形差异，这可以解释为断层控制变形。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)

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