Evaluation of the streambed leakage concept in analytical models using data from three pumping tests

Kollet, Stefan; Zlotnik, Vitaly A.

doi:10.1007/s10040-006-0156-7

Cited by 10 publications

(3 citation statements)

References 44 publications

(64 reference statements)

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“…Figure 11 shows the simulation results that provided the best fit to the data for three monitoring depths below the land surface using T bc = 286 K and T rain = T wbt The agreement is good and the quality of the fit increases with increasing depth because subsurface heat transport is represented adequately and high‐frequency variations due to processes at the land surface are filtered out; however, T bc is 3 K larger than the value estimated from long‐term measurements and the literature. This might be explained by the applied assumptions, such as λ being independent of the moisture content, θ. Additionally, the location of T bc at 6‐m depth might still be too shallow because at this site there are strong surface water–groundwater interactions along drainage canals that might influence temperatures at greater depths (Constantz et al, 2002; Kollet and Zlotnik, 2007).…”

Section: Resultsmentioning

confidence: 99%

The Influence of Rain Sensible Heat and Subsurface Energy Transport on the Energy Balance at the Land Surface

Kollet

Cvijanović

Schüttemeyer

et al. 2009

Vadose Zone Journal

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A : CLM, Common Land Model; LSM, land surface model. S S : C S -S MIn land surface models, which account for the energy balance at the land surface, subsurface heat transport is an important component that reciprocally infl uences ground, sensible, and latent heat fl uxes and net radia on. In most models, subsurface heat transport parameteriza ons are commonly simplifi ed for computa onal effi ciency. A simplifi ca on made in all models is to disregard the sensible heat of rain, H l , and convec ve subsurface heat fl ow, q cv , i.e., the convec ve transport of heat through moisture redistribu on. These simplifi ca ons act to decouple heat transport from moisture transport at the land surface and in the subsurface, which is not realis c. The infl uence of H l and q cv on the energy balance was studied using a coupled model that integrates a subsurface moisture and energy transport model with a land surface model of the land surface energy balance, showing that all components of the land surface energy balance depend on H l . The strength of the dependence is related to the rainfall rate and the temperature diff erence between the rain water and the soil surface. The rain water temperature is a parameter rarely measured in the fi eld that introduces uncertainty in the calcula ons and was approximated using the either air or wet bulb temperatures in diff erent simula ons. In addi on, it was shown that the lower boundary condi on for closing the problem of subsurface heat transport, including convec on, has strong implica ons on the energy balance under dynamic equilibrium condi ons. Comparison with measured data from the Meteosta on Haarweg, Wageningen, the Netherlands, shows good agreement and further underscores the importance of a more ghtly coupled subsurface hydrology-energy balance formula on in land surface models.

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Section: Resultsmentioning

confidence: 99%

The Influence of Rain Sensible Heat and Subsurface Energy Transport on the Energy Balance at the Land Surface

Kollet

Cvijanović

Schüttemeyer

et al. 2009

Vadose Zone Journal

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“…a is expressed by dK a / K , where d [L] is the thickness of the streambed and K [L T −1 ] the hydraulic conductivity of the streambed. The retardation coefficient is inversely proportional to the streambed conductance per square meter C [T −1 ], defined as K / d [ Hantush , ; Kollet and Zlotnik , ]. The distance x represents the distance from the streambank.…”

Section: Methodsmentioning

confidence: 99%

Rapid identification of transience in streambed conductance by inversion of floodwave responses

Gianni

Richon

Perrochet

et al. 2016

Water Resources Research

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Streambed conductance controls the interaction between surface and groundwater. However, the streambed conductance is often subject to transience. Directly measuring hydraulic properties in a river yields only point values, is time‐consuming and therefore not suited to detect transience of physical properties. Here, we present a method to continuously monitor transience in streambed conductance. Input data are time series of stream stage and near stream hydraulic head. The method is based on the inversion of floodwave responses. The analytical model consists of three parameters: x, the distance between streambank and an observation well, α, the aquifer diffusivity, and a the retardation coefficient that is inversely proportional to the streambed conductance. Estimation of a is carried out over successive time steps in order to identify transience in streambed conductance. The method is tested using synthetic data and is applied to field data from the Rhône River and its alluvial aquifer (Switzerland). The synthetic method demonstrated the robustness of the proposed methodology. Application of the method to the field data allowed identifying transience in streambed properties, following flood events in the Rhône. This method requires transience in the surface water, and the river should not change its width significantly with a rising water level. If these conditions are fulfilled, this method allows for a rapid and effective identification of transience in streambed conductance.

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“…Some field studies have shown that a clear interface between the surface and subsurface is not always present (e.g., Bayani and A. (2003), Ghysels et al (2018), Kollet and Zlotnik (2003), Kollet and Zlotnik (2007)). Including the aquifer resistance is essential in such conditions.…”

Section: Equationmentioning

confidence: 99%

Scale-dependent parameterization of groundwater–surface water interactions in a regional hydrogeological model

Ciacca

Leterme

Laloy

et al. 2019

Journal of Hydrology

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Evaluation of the streambed leakage concept in analytical models using data from three pumping tests

Cited by 10 publications

References 44 publications

The Influence of Rain Sensible Heat and Subsurface Energy Transport on the Energy Balance at the Land Surface

The Influence of Rain Sensible Heat and Subsurface Energy Transport on the Energy Balance at the Land Surface

Rapid identification of transience in streambed conductance by inversion of floodwave responses

Scale-dependent parameterization of groundwater–surface water interactions in a regional hydrogeological model

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