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| Titel |
Groundwater response to leakage of surface water through a thick vadose zone in the middle reaches area of Heihe River Basin, in China |
| VerfasserIn |
X.-S. Wang, M.-G. Ma, X. Li, J. Zhao, P. Dong, J. Zhou |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 14, no. 4 ; Nr. 14, no. 4 (2010-04-07), S.639-650 |
| Datensatznummer |
250012266
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| Publikation (Nr.) |
 copernicus.org/hess-14-639-2010.pdf |
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| Zusammenfassung |
| The behavior of groundwater response to leakage of surface water in the
middle reaches area of Heihe River Basin is significantly influenced by a
thick vadose zone. The groundwater regime is a result of two recharge events
due to leakage of Heihe River and irrigation water with different
delay time. A nonlinear leakage model is developed to calculate the monthly
leakage of Heihe River in considering changes of streamflow, river stage and
agricultural water utilization. Numerical modeling of variable saturated
flow is carried out to investigate the general behaviors of leakage-recharge
conversion through a thick vadose zone. It is found that the recharge
pattern can be approximated by simple reservoir models of leakages under a
river and under an irrigation district with different delay-time and
recession coefficient. A triple-reservoir model of relationship between
surface water, vadose zone and groundwater is developed. It reproduces the
groundwater regime during 1989–2006 with variable streamflow of Heihe River
and agricultural water utilization. The model is applied to interpret
changes of groundwater level during 2007–2008 that observed in the Watershed
Airborne Telemetry Experimental Research (WATER). |
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