Quantification of Groundwater Recharge from an Ephemeral Stream into a Mountainous Karst Aquifer

Dvory, Noam Zach; Ronen, A.; Livshitz, Yakov; Adar, Eilon; Kuznetsov, M.; Yakirevich, A.

doi:10.3390/w10010079

Cited by 18 publications

(16 citation statements)

References 37 publications

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“…For instance, the inverse DWE model has also been used for investigating lateral flow in underground karst conduits and for defining the exchanges between conduits and the fissured matrix (Cholet et al, ). In parallel to these considerations that promote the model as a tool for diagnosing SW/GW exchanges at different scales, our results highlight the inaccuracies that can be generated by using nondiffusive models, as is frequently the case for flood modelling (see review in Singh, ) and for karst basins (Bailly‐Comte et al, ; Dvory et al, ). Our results are coherent with Naulin's work () in the Cévennes region (southern France), who showed that DWE was more suitable in lowland areas, including karst formations, than in mountains with less permeable hard‐rock formations.…”

Section: Discussionsupporting

confidence: 75%

“…For highest peakflows, lateral outflow (Figure a) is generally considered in the case of overbank flow when waters from the river flow to the flood plain, without been returned to the river during the flood (Jothityangkoon & Sivapalan, ; Moussa & Bocquillon, ), modifying the shape of the hydrograph (Rak, Kozelj, & Steinman, ; Fleischmann, Paiva, Collischonn, Sorribas, & Pontes, ). Another case favouring lateral outflow is specific to permeable basins, where river losses infiltrate and recharge the underlying aquifer (Charlier et al, ; Dvory et al, ; Sorman, Abdulrazzak, & Morel‐Seytoux, ). This is notably the case in arid/Mediterranean environment, where the importance of infiltrating floodwater for aquifer recharge has been highlighted in disconnected river‐aquifer systems (Camarasa Belmonte & Segura Beltrán, ; Dahan, Shani, Enzel, Yechieli, & Yakirevich, ; Hughes & Sami, ; Lange, ; Vázquez‐Suñé, Capino, Abarca, & Carrera, ).…”

Section: Introductionmentioning

confidence: 99%

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Quantifying peakflow attenuation/amplification in a karst river using the diffusive wave model with lateral flow

Charlier

Moussa

David

et al. 2019

Hydrological Processes

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The aim of this paper is to quantify peakflow attenuation and/or amplification in a river, investigating lateral flow from the intermediate catchment during floods. This is a challenge for the study of the hydrological response of permeable/intermittent streams, and our contribution refers to a modelling framework based on the inverse problem for the diffusive wave model applied in a karst catchment. Knowing the upstream and downstream hydrographs on a reach between two stations, we can model the lateral one, given information on the hydrological processes involved in the intermediate catchment. The model is applied to 33 flood events in the karst reach of the Iton River in French Normandy where peakflow attenuation is observed. The monitored zone consists of a succession of losing and gaining reaches controlled by strong surface‐water/groundwater (SW/GW) interactions. Our results show that despite a high baseflow increase in the reach, peakflow is attenuated. Model application shows that the intensity of lateral outflow for the flood component is linked to upstream discharge. A combination of river loss and overbank flow for highest floods is proposed for explaining the relationships. Our approach differentiates the role of outflow (river loss and overbank flow) and that of wave diffusion on peakflow attenuation. Based on several sets of model parameterization, diffusion is the main attenuation process for most cases, despite high river losses of up to several m3/s (half of peakflow for some parameterization strategies). Finally, this framework gives new insight into the SW/GW interactions during floods in karst basins, and more globally in basins characterized by disconnected river‐aquifer systems.

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Section: Discussionsupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Quantifying peakflow attenuation/amplification in a karst river using the diffusive wave model with lateral flow

Charlier

Moussa

David

et al. 2019

Hydrological Processes

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“…It can develop a series of underground drainage systems with sinkholes and caves. The structure of these caves is very complex, often first forming some cave channels and then forming a multi-layered conduit network by changes of water table [5][6][7][8][9]. In the long geological history, soluble rocks are subjected to leaching by liquid, especially rainwater, for a long period.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Geophysical Characterization of Deeply Buried Paleokarst System in the Tahe Oilfield, Tarim Basin, China

Tian

Wang

Fang

et al. 2019

Water

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Paleokarst reservoirs are the major type of the Ordovician carbonate reservoirs in the Tahe Oilfield. Due to the strong heterogeneity in distribution, it is a real challenge to detect the spatial distribution of paleokarst reservoirs, especially those deeply buried more than 5500 m in the Tahe area. Based on the abundant core samples, this paper first described the structure of paleocaves drilled by well. Second, after time–depth conversions, the results from drilled wells were tied to three-dimensional (3D) seismic datasets, and then the threshold of host rocks and caves in wave impedance were identified. Third, the seismic-scale mapping and visualization of the paleokarst reservoirs were achieved by tracing the distribution of paleocaves. This approach was applied in the well T403 area, and the structure of the paleokarst, especially the runoff zone, was interpreted. 3D structure and spatial distribution of the paleokarst system was demonstrated by plane, vertical, and 3D models. Additionally, according to the hydrology genetic relationships, the paleocaves in the runoff zone were divided into sinkholes, main channel, and branch channel. The approach of a 3D geophysical characterization of a deeply buried paleokarst system can be applicable to Tahe and other similar paleokarst oilfields, which will guide hydrocarbon exploration in paleokarst reservoirs.

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“…In recent years, many approaches for modeling groundwater flow in karst have been suggested (e.g., [4][5][6]). Generally, they are divided into two main groups [3]: spatially lumped (hydrological) and spatially distributed (hydraulic) models.…”

Section: Introductionmentioning

confidence: 99%

Groundwater Flow Modeling in Karst Aquifers: Coupling 3D Matrix and 1D Conduit Flow via Control Volume Isogeometric Analysis—Experimental Verification with a 3D Physical Model

Malenica

Gotovac

Kamber

et al. 2018

Water

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A novel numerical model for groundwater flow in karst aquifers is presented. A discrete-continuum (hybrid) approach, in which a three-dimensional matrix flow is coupled with a one-dimensional conduit flow, was used. The laminar flow in the karst matrix is described by a variably saturated flow equation to account for important hydrodynamic effects in both the saturated and unsaturated zones. Turbulent conduit flow for both free surface and pressurized flow conditions was captured via the noninertia wave equation, whereas the coupling of two flow domains was established through an exchange term proportional to head differences. The novel numerical approach based on Fup basis functions and control-volume formulation enabled us to obtain smooth and locally conservative numerical solutions. Due to its similarity to the isogeometric analysis concept (IGA), we labeled it as control-volume isogeometric analysis (CV-IGA). Since realistic verification of the karst flow models is an extremely difficult task, the particular contribution of this work is the construction of a specially designed 3D physical model ( dimensions: 5.66 × 2.95 × 2.00 m) in order to verify the developed numerical model under controlled laboratory conditions. Heterogeneous porous material was used to simulate the karst matrix, and perforated pipes were used as karst conduits. The model was able to capture many flow characteristics, such as the interaction between the matrix and conduit, rainfall infiltration through the unsaturated zone, direct recharge through sinkholes, and both free surface and pressurized flow in conduits. Two different flow experiments are presented, and comparison with numerical results confirmed the validity of the developed karst flow model under complex laboratory conditions.

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Quantification of Groundwater Recharge from an Ephemeral Stream into a Mountainous Karst Aquifer

Cited by 18 publications

References 37 publications

Quantifying peakflow attenuation/amplification in a karst river using the diffusive wave model with lateral flow

Quantifying peakflow attenuation/amplification in a karst river using the diffusive wave model with lateral flow

Three-Dimensional Geophysical Characterization of Deeply Buried Paleokarst System in the Tahe Oilfield, Tarim Basin, China

Groundwater Flow Modeling in Karst Aquifers: Coupling 3D Matrix and 1D Conduit Flow via Control Volume Isogeometric Analysis—Experimental Verification with a 3D Physical Model

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