Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 19, issue 11
Articles | Volume 19, issue 11
https://doi.org/10.5194/hess-19-4531-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/hess-19-4531-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 19, issue 11
Research article
 | 
12 Nov 2015
Research article |  | 12 Nov 2015

Nonlinear effects of locally heterogeneous hydraulic conductivity fields on regional stream–aquifer exchanges

J. Zhu, C. L. Winter, and Z. Wang

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Short summary
Computation experiments found the effects of small-scale heterogeneities do influence estimates of aquifer--stream exchanges. The effects are nonlinear in the sense that simulated discharges from aquifers to streams are systematically lower than discharges produced by a base model parameterized with coarse effective K. Although aquifer heterogeneities are uncorrelated at local scales, they appear to induce coherent slow-paths in groundwater fluxes that in turn reduce aquifer-stream exchanges.
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