DOI: 10.1002/2014GL061206
论文题名: Terrestrial water storage response to the 2012 drought estimated from GPS vertical position anomalies
作者: Chew C.C. ; Small E.E.
刊名: Geophysical Research Letters
ISSN: 0094-9829
EISSN: 1944-9560
出版年: 2014
卷: 41, 期: 17 起始页码: 6145
结束页码: 6151
语种: 英语
Scopus关键词: Digital storage
; Drought
; Groundwater
; Loading
; Soil moisture
; Drought indices
; Drought monitoring
; GPS data
; Near-real time
; Solid earth
; Terrestrial water storage
; Vertical positions
; Global positioning system
; data set
; drought stress
; GPS
; GRACE
; meteorology
; observational method
; satellite data
; soil moisture
; water storage
; Great Plains
英文摘要: Historically, drought monitoring systems have not incorporated observations of terrestrial water storage (TWS). Global Positioning System (GPS) instruments can be used to estimate TWS variations in near real time because the solid Earth responds elastically to changes in hydrologic loading. Here GPS vertical position data, u, are used to assess the timing and duration of TWS anomalies in the High Plains caused by the 2012 drought; u indicates an initial TWSminimumin 2012, consistentwith GRACE TWS, several months after the most severemeteorological forcing. Standard drought indices show recovery fromdrought during spring 2013. In contrast, u indicates that the TWS anomaly intensified by approximately 15% during summer 2013, an interval when no GRACE data are available. Hydrologic observations indicate that depletion of groundwater, not soil moisture, is the source of the persistent TWS anomaly. These results show that GPS data could be used to monitor drought-induced variations in TWS in near real time. © 2014. American Geophysical Union. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84907943474&doi=10.1002%2f2014GL061206&partnerID=40&md5=aa4df8b7fe730d60b03096775a32d3fc
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7093
Appears in Collections: 气候减缓与适应
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作者单位: Department of Geological Sciences, University of Colorado Boulder, Boulder, CO, United States
Recommended Citation:
Chew C.C.,Small E.E.. Terrestrial water storage response to the 2012 drought estimated from GPS vertical position anomalies[J]. Geophysical Research Letters,2014-01-01,41(17).