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|a Global depletion of groundwater resources |h [electronic resource]. |
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|a [S.l.] : |b American Geophysical Union, |c 2010-10-26. |
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|a Geophysical Research Letters Volume 37 Issue 20. |
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|a Please contact the owning institution for licensing and permissions. It is the user's responsibility to ensure use does not violate any third party rights. |
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|a In regions with frequent water stress and large aquifer systems groundwater is often used
as an additional water source. If groundwater abstraction exceeds the natural groundwater
recharge for extensive areas and long times, overexploitation or persistent groundwater
depletion occurs. Here we provide a global overview of groundwater depletion (here
defined as abstraction in excess of recharge) by assessing groundwater recharge with a
global hydrological model and subtracting estimates of groundwater abstraction.
Restricting our analysis to sub-humid to arid areas we estimate the total global
groundwater depletion to have increased from 126 (±32) km3 a-1 in 1960 to 283 (±40)
km3 a-1 in 2000. The latter equals 39 (±10)% of the global yearly groundwater abstraction,
2 (±0.6)% of the global yearly groundwater recharge, 0.8 (±0.1)% of the global yearly
continental runoff and 0.4 (±0.06)% of the global yearly evaporation, contributing a
considerable amount of 0.8 (±0.1) mm a-1 to current sea-level rise.
§ Corresponding author: m.bierkens@geo.uu.nl
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|a Electronic reproduction. |c Florida International University, |d 2015. |f (dpSobek) |n Mode of access: World Wide Web. |n System requirements: Internet connectivity; Web browser software. |
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|a source water protection. |
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|a Ludovicus P.H. van Beek. |
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|t Global depletion of groundwater resources |
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|a dpSobek |c Sea Level Rise |
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|u http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI15042527/00001 |y Click here for full text |
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|3 FULL TEXT- Global depletion of groundwater resources |u http://onlinelibrary.wiley.com/doi/10.1029/2010GL044571/abstract |y Global depletion of groundwater resources |
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|a http://dpanther.fiu.edu/sobek/content/FI/15/04/25/27/00001/FI15042527_thm.jpg |
