DOI: 10.1016/j.gloplacha.2016.01.002
论文题名: Long-term groundwater storage change in Victoria, Australia from satellite gravity and in situ observations
作者: Chen J.L. ; Wilson C.R. ; Tapley B.D. ; Scanlon B. ; Güntner A.
刊名: Global and Planetary Change
ISSN: 0921-8181
出版年: 2016
卷: 139 起始页码: 56
结束页码: 65
语种: 英语
英文关键词: Bore
; GRACE
; Groundwater depletion
; Murray-darling basin
; Satellite gravity
; Victoria
Scopus关键词: Boring
; Climate models
; Geodetic satellites
; Groundwater
; Iterative methods
; Satellites
; Surface measurement
; Water conservation
; GRACE
; Groundwater depletion
; Murray-Darling Basin
; Satellite gravity
; Victoria
; Groundwater resources
英文摘要: Analysis based on satellite gravity measurements from the Gravity Recovery and Climate Experiment (GRACE) and land surface models indicates that groundwater storage in Victoria, Australia had been declining steadily, until a trend reversal around early 2010, attributed to two wetter seasons in 2010 and 2011. In situ groundwater level measurements (from a network of 1395 bores in Victoria) also indicate a steady groundwater depletion since the early 1990's, and show remarkable agreement with GRACE estimates for the 10-year period (2003-2012) in common with the GRACE mission. Groundwater depletion rates for 2005 to 2009 are relatively large as indicated by both GRACE estimates (8.0±1.7km3/yr) and in situ measurements (8.3±3.4km3/yr). Over the same period (2005-2009), GRACE measurements capture significant groundwater depletion in a wider region covering much of the southern Murray-Darling Basin, and the total groundwater depletion rate in this region is about 17.2±4.7km3/yr. Annual groundwater storage changes are strongly correlated with precipitation anomalies, but only about one-fifth of anomalous precipitation contributes to groundwater recharge. The strong correlation suggests that this groundwater depletion is primarily related to drought with related groundwater pumping for agricultural and domestic consumption. The remarkable agreement between GRACE estimates and in situ measurements demonstrates the great potential of satellite gravity observations in combination with land surface model estimates to quantify changes in regional groundwater resources, especially when in situ measurements are limited or unavailable. This study shows the importance of reducing leakage bias in GRACE observations and the effectiveness of the forward modeling iterative method used. © 2016 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84954308926&doi=10.1016%2fj.gloplacha.2016.01.002&partnerID=40&md5=6b62cd1bf95f4d02489e556b0b5a801e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11689
Appears in Collections: 全球变化的国际研究计划 气候变化与战略
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作者单位: Center for Space Research, University of Texas, Austin, United States
Recommended Citation:
Chen J.L.,Wilson C.R.,Tapley B.D.,et al. Long-term groundwater storage change in Victoria, Australia from satellite gravity and in situ observations[J]. Global and Planetary Change,2016-01-01,139.