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dc.contributor.authorHwang, Cheinwayen_US
dc.contributor.authorYang, Yuandeen_US
dc.contributor.authorKao, Rickyen_US
dc.contributor.authorHan, Jianchengen_US
dc.contributor.authorShum, C. K.en_US
dc.contributor.authorGalloway, Devin L.en_US
dc.contributor.authorSneed, Michelleen_US
dc.contributor.authorHung, Wei-Chiaen_US
dc.contributor.authorCheng, Yung-Shengen_US
dc.contributor.authorLi, Feien_US
dc.date.accessioned2019-04-03T06:41:46Z-
dc.date.available2019-04-03T06:41:46Z-
dc.date.issued2016-06-21en_US
dc.identifier.issn2045-2322en_US
dc.identifier.urihttp://dx.doi.org/10.1038/srep28160en_US
dc.identifier.urihttp://hdl.handle.net/11536/133926-
dc.description.abstractContemporary applications of radar altimetry include sea-level rise, ocean circulation, marine gravity, and icesheet elevation change. Unlike InSAR and GNSS, which are widely used to map surface deformation, altimetry is neither reliant on highly temporally-correlated ground features nor as limited by the available spatial coverage, and can provide long-term temporal subsidence monitoring capability. Here we use multi-mission radar altimetry with an approximately 23 year data-span to quantify land subsidence in cropland areas. Subsidence rates from TOPEX/POSEIDON, JASON-1, ENVISAT, and JASON-2 during 1992-2015 show time-varying trends with respect to displacement over time in California's San Joaquin Valley and central Taiwan, possibly related to changes in land use, climatic conditions (drought) and regulatory measures affecting groundwater use. Near Hanford, California, subsidence rates reach 18 cm yr(-1) with a cumulative subsidence of 206 cm, which potentially could adversely affect operations of the planned California High-Speed Rail. The maximum subsidence rate in central Taiwan is 8 cm yr(-1). Radar altimetry also reveals time-varying subsidence in the North China Plain consistent with the declines of groundwater storage and existing water infrastructure detected by the Gravity Recovery And Climate Experiment (GRACE) satellites, with rates reaching 20 cm yr(-1) and cumulative subsidence as much as 155 cm.en_US
dc.language.isoen_USen_US
dc.titleTime-varying land subsidence detected by radar altimetry: California, Taiwan and north Chinaen_US
dc.typeArticleen_US
dc.identifier.doi10.1038/srep28160en_US
dc.identifier.journalSCIENTIFIC REPORTSen_US
dc.citation.volume6en_US
dc.citation.spage0en_US
dc.citation.epage0en_US
dc.contributor.department土木工程學系zh_TW
dc.contributor.departmentDepartment of Civil Engineeringen_US
dc.identifier.wosnumberWOS:000378226100002en_US
dc.citation.woscount7en_US
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