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| Titel |
Evaluating the effect of partial contributing storage on the storage–discharge function from recession analysis |
| VerfasserIn |
X. Chen, D. Wang |
| 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 ; 17, no. 10 ; Nr. 17, no. 10 (2013-10-31), S.4283-4296 |
| Datensatznummer |
250085979
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| Publikation (Nr.) |
 copernicus.org/hess-17-4283-2013.pdf |
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| Zusammenfassung |
| Hydrograph recession during dry periods has been used to construct water
storage–discharge relationships and to quantify storage dynamics and
evaporation when streamflow data is available. However, variable hydrologic
connectivity among hillslope–riparian–stream zones may affect the lumped
storage–discharge relationship, and as a result, affect the estimation of
evaporation and storage change. Given observations of rainfall and runoff,
and remote-sensing-based observations of evaporation, the ratio (α)
between estimated daily evaporation from recession analysis and observed
evaporation, and the ratio (β) between estimated contributing storage
and total watershed storage are computed for 9 watersheds located in
different climate regions. Both evaporation and storage change estimation
from recession analysis are underestimated due to the effect of partial
contributing storage, particularly when the discharge is low. It was found
that the values of α decrease significantly during individual
recession events, while the values of β are relatively stable during
a recession event. The values of β are negatively correlated with the
water table depth and vary significantly among recession events. The partial
contributing storage effect is one possible cause for the multi-valued
storage–discharge relationship. |
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