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Ground Subsidence in Xiong’an New Area from 2012 to 2016 Monitored by InSAR Technique(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2018年第05期
Page:
652-662
Research Field:
地球信息科学
Publishing date:

Info

Title:
Ground Subsidence in Xiong’an New Area from 2012 to 2016 Monitored by InSAR Technique
Author(s):
ZHANG Yong-hong LIU Bing WU Hong-an CHENG Xia KANG Yong-hui
1. Institute of Photogrammetry and Remote Sensing, Chinese Academy of Surveying and Mapping, Beijing 100830, China; 2. College of Geomatics, Shandong University of Science and Technology, Qingdao 266590, Shandong, China; 3. School of Geosciences and Info-physics, Central South University, Changsha 410083, Hunan, China
Keywords:
ground subsidence InSAR technique remote sensing time series geothermal resource groundwater Xiong’an New Area
PACS:
P236
DOI:
-
Abstract:
The establishment of Xiong’an New Area is a millennium plan and a national strategy. Located in the North China plain, the largest subsiding zone of China, the ground subsidence condition of Xiong’an New Area is an important factor related to its environmental carrying capacity. The ground subsidence of Xiong’an New Area was monitored using time-series InSAR technique with 28 RADARSAT-2 images acquired from January 2012 to November 2016. The annual subsidence rate and the accumulative subsidence series over Xiong’an New Area were retrieved. The InSAR monitoring result was validated by leveling data measured over the similar period with the SAR image acquisitions. Subsequently, driving forces of ground subsidence over Xiong’an New Area was analyzed, and the land in Xiong’an New Area was categorized into 4 subsiding risk levels according to annual subsidence rate. The results show that about 78% of Xiong’an New Area had little ground subsidence with annual subsidence rate less than 10 mm per year, and the large subsidence occurred only in Xiongxian county which was mainly caused by extraction of geothermal resources and groundwater. There were 67.9 km2 with the subsiding risk categorized as relatively serious and serious levels, accounting to 4.38% of Xiong’an New Area. The result of this research could provide decision-making reference for the construction and development of Xiong’an New Area.

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Last Update: 2018-10-01