A step-wise semi-distributed simulation approach to characterize a karst aquifer and to support dam construction in a data-scarce environment

Adinehvand, Rouhollah; Raeisi, Ezzat; Hartmann, Andreas

doi:10.1016/j.jhydrol.2017.08.056

Cited by 21 publications

(14 citation statements)

References 67 publications

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“…Piezometric levels obtained by KAGIS reported good agreement between the observed and simulated values. Similar trustworthy results were also obtained in the simulation of the karst groundwater levels in previous studies (e.g., Adinehvand, Raeisi, & Hartmann, 2017;Brenner, Coxon, Howden, Freer, & Hartmann, 2018). In the present study, main differences between the observed and simulated values were identified between September 2009 and September 2011, probably related to the abovementioned problems in the measurement of the experimental values.…”

Section: Modelled Resultssupporting

confidence: 92%

Validating the KAGIS black‐box GIS‐based model in a Mediterranean karst aquifer: Case of study of Mela aquifer (SE Spain)

Valdés-Abellán

Pla

Fernández-Mejuto

et al. 2018

Hydrological Processes

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Karst Aquifer GIS‐based model (KAGIS model) is developed and applied to Mela aquifer, a small karst aquifer located in a Mediterranean region (SE Spain). This model considers different variables, such as precipitation, land use, surface slope and lithology, and their geographical heterogeneity to calculate both, the run‐off coefficients and the fraction of precipitation which contributes to fill the soil water reservoir existing above the aquifer. Evapotranspiration uptakes deplete water, exclusively, from this soil water reservoir and aquifer recharge occurs when water in the soil reservoir exceeds the soil field capacity. The proposed model also obtains variations of the effective porosity in a vertical profile, an intrinsic consequence of the karstification processes. A new proposal from the Nash–Sutcliffe efficiency index, adapted to arid environments, is presented and employed to evaluate the model's ability to predict the water table oscillations. The uncertainty in the model parameters is determined by the Generalized Likelihood Uncertainty Estimation method. Afterwards, when KAGIS is calibrated, wavelet analysis is applied to the resulting data in order to evaluate the variability in the aquifer behaviour. Wavelet analysis reveals that the rapid hydrogeological response, typical of a wide variety of karst systems, is the prevailing feature of Mela aquifer. This study proves that KAGIS is a useful tool to quantify recharge and discharge rates of karst aquifers and can be effectively applied to develop a proper management of water resources in Mediterranean areas.

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Section: Modelled Resultssupporting

confidence: 92%

Validating the KAGIS black‐box GIS‐based model in a Mediterranean karst aquifer: Case of study of Mela aquifer (SE Spain)

Valdés-Abellán

Pla

Fernández-Mejuto

et al. 2018

Hydrological Processes

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“…The total area of intensive solutional fractures is so large that it reduces the discharge per unit area and velocity, resulting in a low hydraulic gradients and laminar flow regime. The results of the laminar flow regime in the DMA are compatible with the results from the semi-distributed model of Adinehvand et al (2017). The general flow direction is almost parallel to the Malagha Anticline bedding planes strike, toward the Qale-Tol alluvial aquifer (Fig.…”

Section: Conceptual Model and General Flow Directionsupporting

confidence: 84%

Characterization of a karst aquifer in a complex tectonic region, Southwestern Iran

Adinehvand¹,

Raeisi²

2018

JCKS

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Characterization of karst aquifers is not unique and depends on geological and structural settings, relief, precipitation, and the interactions of these parameters. Therefore, the characterization of a highland karst aquifer in tectonized geological settings is still a challenge, especially in a region with scarce hydrogeological data. In this study, we characterize an inaccessible highland karst aquifer under the severe compressional stresses of two thrust faults, using extensive hydrogeological data by an integrated approach. The Malagha karst aquifer is located in the southern limb of the Malagha Anticline in a tectonized highland zone and is bounded by the Malagha and Qale-Tol thrust faults. Dam construction-related data including hydrochemical data, stable isotopes, water table levels, geological logs, permeabilities, fracture zones from numerous boreholes, and data from three dye tracer tests were used to evaluate the aquifer behavior. The exposed breccia zones and the significant water table differences on both sides of the Qale-Tol thrust fault core confirm the barrier behavior of the fault. The damage zone is highly fractured based on the geological logs, resulting in a relatively uniform water level distribution. The karst water flows through the extensive fracture networks inside the damage zone with no evidence of converging toward any main conduit. The type of flow is most probably diffuse, based on two dye tracer tests, the flat water table, and continuous high permeabilities up to a length of 140 m. The general flow direction is parallel to the fault strike, toward the downstream alluvium bounded between two impermeable formations. This conclusion is based on water balance, geological settings, and δ 18 O and δ 2 H data. Due to the flatness of the water table, such conditions as the mound below the Abolabbas River, bedding plane dips, and fractures and joints may locally control the flow direction. The footprint of the karst water and the recharge from the Abolabbas River are distinguishable by the hydrochemical and isotopic data.

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“…At regions with limited data availability, simplified karst modeling approaches are applied that represent the domi-nant dual permeability processes of karst systems by varying combination of buckets that represent the important stor-ages of the karst system: the soil, epikarst, karst matrix, and conduits (Hartmann et al 2014). In recent years, research focused on quantifying the uncertainty that results from those simplified karst modeling approaches (Chen et al 2017;Adinehvand et al 2017;Xu et al 2018) and quantify-ing the information content of auxiliary data as hydrochemi-cal information (Hartmann et al 2017a, b) or geophysical measurements (Mazzilli et al 2013). Future research is nec-essary to further explore the value of auxiliary data and to link the advantages of these simplified modeling approaches and the above-mentioned physically based approaches.…”

Section: Modeling Of Karst Flow and Reactive Transportmentioning

confidence: 99%

Characterization, modeling, and remediation of karst in a changing environment

Masséi

Padilla

et al. 2018

Environ Earth Sci

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This introductory editorial paper provides a review and prospective outlook of the achievements and challenges in karst research under a changing environment. A brief discussion of the past and future karst research has been focused on: (1) data and new technologies; (2) modeling of karst flow and reactive transport; (3) responses of karst hydrosystems to climate variability and changes across scales.

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A step-wise semi-distributed simulation approach to characterize a karst aquifer and to support dam construction in a data-scarce environment

Cited by 21 publications

References 67 publications

Validating the KAGIS black‐box GIS‐based model in a Mediterranean karst aquifer: Case of study of Mela aquifer (SE Spain)

Validating the KAGIS black‐box GIS‐based model in a Mediterranean karst aquifer: Case of study of Mela aquifer (SE Spain)

Characterization of a karst aquifer in a complex tectonic region, Southwestern Iran

Characterization, modeling, and remediation of karst in a changing environment

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