A conceptual model of hydraulic networks in carbonate rocks, illustrated by examples from Poland

Motyka, Jacek

doi:10.1007/s100400050169

Cited by 64 publications

(46 citation statements)

References 15 publications

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“…Different results obtained on a micro-scale remain in accordance with the opinion that fractures and channel network development are determined mainly by tectonic background, and to a lesser extent by lithology and sedimentary processes (Motyka 1998 . Map to show differences in water table position for safe yield (Q-110000 m recharge areas, while decreases characterized drainage zones.…”

Section: Discussionsupporting

confidence: 80%

“…All of these data are usually available or easy to obtain, as in the case of the site selected for our studies, the OpoleZawadzkie fractured-karstic aquifer. The analyses presented that are oriented towards an explanation of the anisotropy problem are based on a confirmed relationship (Motyka 1998) that channel system networks develop under the strong influence of fracture orientation. The interpretation of fracture measurements can be directly implemented in the environment of karstic channels and entire aquifers.…”

Section: Introductionmentioning

confidence: 99%

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Anisotropy Modelling of the Fissure-Karstic Aquifer of the Opole-Zawadzkie Major Groundwater Basin (South-West Poland)

Wcisło

Olichwer

Staśko

2014

Acta Geologica Polonica

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ABSTRACT:Wcisło, M., Olichwer, T. and Staśko, S. 2014. Anisotropy modelling of the fissure-karstic aquifer of the OpoleZawadzkie Major Groundwater Basin (south-west Poland). Acta Geologica Polonica, 64 (3), 353-360. Warszawa.The problem of the anisotropy and heterogeneity of karstic aquifers has been previously described. The Opole-Zawadzkie Major Groundwater Body (south-west Poland) was chosen for this investigation. The parameters for anisotropy were analysed on the basis of well yield and observation of macro-fractures (field scale) compared with micro-fractures. Statistical tools were used to assess the directions and values of anisotropy. The estimated parameters were tested on two different models realized in Visual Modflow code. The anisotropy of hydraulic conductivity was recognized as an essential factor for groundwater flow direction and water table depletion prognosis as well as for water budget modification. The second model (M2), representing anisotropy flow conditions, gave an 11% lower value of safe yield in comparison with the first model (M1-isotropic). Additionally, anisotropy conditions caused water table lowering and limitation of aquifer recharge. The results of these studies indicate the need for more attention to be paid to the anisotropy problem in the area, where fracture-karstic aquifers are the main source of groundwater supply.

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Section: Discussionsupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Anisotropy Modelling of the Fissure-Karstic Aquifer of the Opole-Zawadzkie Major Groundwater Basin (South-West Poland)

Wcisło

Olichwer

Staśko

2014

Acta Geologica Polonica

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“…Matrix permeability is a complex of voids in a small rock fragment with a volume of about 10 to 100 cm 3 . The matrix consists of not only intergranular pores but also micro fissures, and small karst voids (Choquette and Pray, 1970;Motyka, 1998). Fracture permeability is formed from mechanical joints, joint swarms and bedding plane partings, mainly enlarged by solution.…”

Section: Flash Flood Characteristicsmentioning

confidence: 99%

Karst flash floods: an example from the Dinaric karst (Croatia)

Bonacci

Ljubenkov

Roje-Bonacci

2006

Nat. Hazards Earth Syst. Sci.

126

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Abstract. Flash floods constitute one of the deadliest and costliest natural disasters worldwide. This paper explains the karst flash flood phenomenon, which represents a special kind of flash flood. As the majority of flash floods karst flash floods are caused by intensive short-term precipitation in an area whose surface rarely exceeds a few square kilometres. The characteristics of all flash floods are their short duration, small areal extent, high flood peaks and rapid flows, and heavy loss of life and property. Karst flash floods have specific characteristics due to special conditions for water circulation, which exist in karst terrains. During karst flash floods a sudden rise of groundwater levels occurs, which causes the appearance of numerous, unexpected, abundant and temporary karst springs. This paper presents in detail an example of a karst flash flood in the Marina bay (Dinaric karst region of Croatia), which occurred in December 2004.

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“…Karst aquifers present characteristics that make them very different from other aquifers, such as high heterogeneity generated by the endokarstic network, high velocities of water flow and short residence times (e.g., Kiraly, 1997;Motyka, 1998). When karst aquifers are located in high-altitude mountain zones, their hydrogeologic behaviour is also influenced by other variables that include large thermal vertical gradients, extremely short response times to precipitation events and snow melt dynamics that control aquifer recharge during the winter and spring seasons (Gremaud et al, 2009;Gremaud and Goldscheider, 2010).…”

mentioning

confidence: 99%

Isotopic and hydrogeochemical characterization of high-altitude karst aquifers in complex geological settings. The Ordesa and Monte Perdido National Park (Northern Spain) case study

Lambán

Jódar

Custódio

et al. 2015

Science of The Total Environment

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The Ordesa and Monte Perdido National Park, located in the Southern Pyrenees, constitutes the highest karst system in Western Europe. No previous studies regarding its geochemical and isotopic groundwater characterization are available in this area. This work presents the results of field and sampling campaigns carried out between July 2007 and September 2013. The groundwater presents high calcium bicarbonate contents due to the occurrence of upper Cretaceous and lower Paleocene--Eocene carbonate materials in the studied area. Other relevant processes include dissolution of anhydrite and/or gypsum and incongruent dissolution of Mg-limestone and dolomite. The water stable isotopes (δ 18 O, δ 2 H) show that the oceanic fronts from the Atlantic Ocean are responsible for the high levels of precipitation. In autumn, winter, and spring, a deuterium excess is found in the recharge water, which could be related to local atmospheric transport of low-altitude snow sublimation vapour and its later condensation on the snow surface at higher altitude, where recharge is mostly produced. The recharge zones are mainly between 2500 m and 3200 m a.s.l.. The tritium content of the water suggests short groundwater transit times. The isotopic composition of dissolved sulphate points to the existence of regional fluxes mixed with local discharge in some of the springs. This work highlights the major role played by the altitude difference between the recharge and discharge zones in controlling the chemistry and the vertical variability of the isotopic composition in high-altitude karst aquifers.

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A conceptual model of hydraulic networks in carbonate rocks, illustrated by examples from Poland

Cited by 64 publications

References 15 publications

Anisotropy Modelling of the Fissure-Karstic Aquifer of the Opole-Zawadzkie Major Groundwater Basin (South-West Poland)

Anisotropy Modelling of the Fissure-Karstic Aquifer of the Opole-Zawadzkie Major Groundwater Basin (South-West Poland)

Karst flash floods: an example from the Dinaric karst (Croatia)

Isotopic and hydrogeochemical characterization of high-altitude karst aquifers in complex geological settings. The Ordesa and Monte Perdido National Park (Northern Spain) case study

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