Observing land subsidence and revealing the factors that influence it using a multi-sensor approach in Yunlin County, Taiwan

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题名:	Observing land subsidence and revealing the factors that influence it using a multi-sensor approach in Yunlin County, Taiwan
作者:	劉說安;Hsu, Wei-Chen;Chang, Hung-Cheng;Chang, Kuan-Tsung;Lin, En-Kai;Liu, Jin-King;Liou, Yuei-An
贡献者:	太空及遙測研究中心
关键词:	Aquaculture;Coastal areas;Coastal zone;Foothills;Global Positioning System (GPS);Global positioning systems;GPS;Gravel;Groundwater;Interferometric synthetic aperture radar;Land;Land subsidence;leveling;Monitoring;monitoring well;PS-InSAR;Remote sensing;Soil compaction;Soils;Subsidence
日期:	2015-01-01
上传时间:	2026-04-21 14:32:38 (UTC+8)
出版者:	MDPI Multidisciplinary Digital Publishing Institute;Basel: MDPI AG
摘要:	摘要： Land subsidence is a worldwide problem that is typically caused by human activities, primarily the removal of groundwater. In Western Taiwan, groundwater has been pumped for industrial, residential, agricultural, and aquacultural uses for over 40 years. In this study, a multisensor monitoring system comprising GPS stations, leveling surveys, monitoring wells, and Persistent Scatterer Interferometric Synthetic Aperture Radar (PS-InSAR) was employed to monitor land subsidence in Western Taiwan. The results indicate that land subsidence in Yunlin County was mainly affected by the compaction of subsurface soils and over-pumping of groundwater from deep soils. The study area comprised western foothills, characterized by sediments containing predominantly gravel, and coastal areas, where clay was predominant. The subsidence in coastal areas was more severe than that in the western foothills, as a result of groundwater removal. An additional factor affecting subsidence was the compaction of deep layers caused by deep groundwater removal and the deep-layer compaction was difficult to recover. Based on multisensor monitoring results, severe subsidence is mainly affected by compaction of subsurface soils, over-pumping of groundwater from deep soils, and deep soil compaction. 出版者： Basel: MDPI AG 出版日期： 2015-06-01 出處： Remote sensing (Basel, Switzerland), 2015-06, Vol.7 (6), p.8202-8223 資源來源： Publicly Available Content Database 版權： Copyright MDPI AG 2015 識別號： ISSN: 2072-4292 識別號： EISSN: 2072-4292 識別號： DOI: 10.3390/rs70608202
显示于类别:	[太空及遙測研究中心] 期刊論文

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