Combined use of natural and artificial tracers to determine the hydrogeological functioning of a karst aquifer: the Villanueva del Rosario system (Andalusia, southern Spain)

Mudarra, Matías; Andreo, Bartolomé; Marín, Ana Isabel; Vadillo, Iñaki; Barberá, Juan Antonio

doi:10.1007/s10040-014-1117-1

Cited by 53 publications

(44 citation statements)

References 30 publications

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“…Our observations go in line with other studies (e.g. Mudarra et al 2014) showing that type and amount of recharge is strongly influenced by the amount and intensity of rainfall, the type of karst forms and the previous hydrological situation.…”

Section: Hydrogeological Characteristics Of Gunung Kidul Karst Derivesupporting

confidence: 93%

“…4), discharge responds within 1.5 h to the first considerable rainfall illustrating again the quick response and close connection of the Seropan system to surface water intrusion. Temperature and EC are still characterized by their base flow values in Period A which shows that discharge responds quicker to the recharge event than the physico-chemical properties a phenomena which was reported by other studies (Ryan and Meiman 1996;Birk et al 2004;Mudarra et al 2014). The decoupling can be explained by the fact that the increase in hydraulic pressure due to heavy rainfall is almost instantaneously transmitted to the conduits.…”

Section: Hydrogeological Characteristics Of Gunung Kidul Karst Derivementioning

confidence: 52%

“…3). This indicates that Seropan River is connected to a highly karstified conduit system with fast conduit flow and short transit time of water (Birk et al 2004;Moore et al 2009;Mudarra et al 2014). Furthermore, these large variations suggest point recharge in close distance (Moore et al 2009).…”

Section: Hydrogeological Characteristics Of Gunung Kidul Karst Derivementioning

confidence: 98%

“…Here, infiltrating water is slowed down and retained to a certain extent until a hydraulic saturation is reached. The observation of slow and rapid flow components in Seropan highlights that karst systems typically modulate incoming signals from rain events in different ways (Mudarra et al 2014).…”

Section: Hydrogeological Characteristics Of Gunung Kidul Karst Derivementioning

confidence: 99%

“…In combination with isotopic parameters like H-/O-isotopy, however, it can provide further valuable information, for example about the origin of water, its residence time or water-rock interactions. Monitoring of natural tracers, especially during storm events, in combination with rainfall data is particularly suitable to get insight into structure and dynamics of karst aquifers and allows the separation of distinct water masses (Baena et al 2009;Mudarra et al 2014). In this context continuous monitoring of electrical conductivity (EC), temperature (T) and discharge (Q) in spring or subsurface water sources has proven to be very useful.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of recharge and flow behaviour of different water sources in Gunung Kidul and its impact on water quality based on hydrochemical and physico-chemical monitoring

et al. 2016

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Karst aquifers are important water resources but highly vulnerable due to their heterogeneous and complex characteristics. Various hydrological aspects (recharge, flow behaviour) have to be known in detail to develop a sustainable concept for water collection, distribution and treatment. In the karst area of Gunung Sewu (Java, Indonesia) such a concept was to be implemented within a German-Indonesian joint IWRM project. The basic hydrogeological conditions and water quality aspects were characterized on a regional scale through hydrochemical monitoring of springs, wells, subsurface and surface rivers. More detailed information about the recharge, flow and storage behaviour was obtained from high resolution monitoring of T, EC and discharge in one large underground river system. The water quality is well below any guideline values with regard to inorganic pollutants during dry season. During rainy season, dissolved Al concentrations are frequently above the Indonesian guideline value. Slow matrix flow is the most important recharge component during dry season, thus assuring the year-round water availability in the subsurface karst. During rainy season, quick infiltration of the surface water is a dominant recharge component. Rapid response of discharge, T and EC to heavy rain suggests the presence of point recharge that feeds a highly karstfied conduit system with fast conduit flow and short transit time of water. The strong variations in discharge and hydrochemistry are particularly challenging for technical water usage and treatment facilities. Piston flow is indicated to be the third important flow component and is induced by heavy rainfall.

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Section: Hydrogeological Characteristics Of Gunung Kidul Karst Derivesupporting

confidence: 93%

Section: Hydrogeological Characteristics Of Gunung Kidul Karst Derivementioning

confidence: 52%

Section: Hydrogeological Characteristics Of Gunung Kidul Karst Derivementioning

confidence: 98%

Section: Hydrogeological Characteristics Of Gunung Kidul Karst Derivementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characterization of recharge and flow behaviour of different water sources in Gunung Kidul and its impact on water quality based on hydrochemical and physico-chemical monitoring

et al. 2016

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Modeling spatiotemporal impacts of hydroclimatic extremes on groundwater recharge at a Mediterranean karst aquifer

Hartmann

Mudarra

Andreo

et al. 2014

Water Resources Research

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Karst aquifers provide large parts of the water supply for Mediterranean countries, though climate change is expected to have a significant negative impact on water availability. Recharge is therefore a key variable that has to be known for sustainable groundwater use. In this study, we present a new approach that combines two independent methods for karst recharge estimation. The first method derives spatially distributed information of mean annual recharge patterns through GIS analysis. The second is a process-based karst model that provides spatially lumped but temporally distributed information about recharge. By combining both methods, we add a spatial reference to the lumped simulations of the process-based model. In this way, we are able to provide spatiotemporal information of recharge and subsurface flow dynamics also during varying hydroclimatic conditions. We find that there is a nonlinear relationship between precipitation and recharge rates resulting in strong decreases of recharge following even moderate decreases of precipitation. This is primarily due to almost constant actual evapotranspiration amounts despite varying hydroclimatic conditions. During the driest year in the record, almost the entire precipitation was consumed as actual evapotranspiration and only little diffuse recharge took place at the high altitudes of our study site. During wettest year, recharge constituted a much larger fraction of precipitation and occurred at the entire study site. Our new method and our findings are significant for decision makers in similar regions that want to prepare for possible changes of hydroclimatic conditions in the future.

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Characterizing the heterogeneity of karst critical zone and its hydrological function: An integrated approach

Chen

Zhang

Soulsby

et al. 2018

Hydrological Processes

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Spatial heterogeneity in the subsurface of karst environments is high, as evidenced by the multiphase porosity of carbonate rocks and complex landform features that result in marked variability of hydrological processes in space and time. This includes complex exchange of various flows (e.g., fast conduit flows and slow fracture flows) in different locations. Here, we integrate various “state‐of‐the‐art” methods to understand the structure and function of this poorly constrained critical zone environment. Geophysical, hydrometric, and tracer tools are used to characterize the hydrological functions of the cockpit karst critical zone in the small catchment of Chenqi, Guizhou Province, China. Geophysical surveys, using electrical resistivity tomography (ERT), inferred the spatial heterogeneity of permeability in the epikarst and underlying aquifer. Water tables in depression wells in valley bottom areas, as well as discharge from springs on steeper hillslopes and at the catchment outlet, showed different hydrodynamic responses to storm event rainwater recharge and hillslope flows. Tracer studies using water temperatures and stable water isotopes (δD and δ18O) could be used alongside insights into aquifer permeability from ERT surveys to explain site‐ and depth‐dependent variability in the groundwater response in terms of the degree to which “new” water from storm rainfall recharges and mixes with “old” pre‐event water in karst aquifers. This integrated approach reveals spatial structure in the karst critical zone and provides a conceptual framework of hydrological functions across spatial and temporal scales.

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Combined use of natural and artificial tracers to determine the hydrogeological functioning of a karst aquifer: the Villanueva del Rosario system (Andalusia, southern Spain)

Cited by 53 publications

References 30 publications

Characterization of recharge and flow behaviour of different water sources in Gunung Kidul and its impact on water quality based on hydrochemical and physico-chemical monitoring

Characterization of recharge and flow behaviour of different water sources in Gunung Kidul and its impact on water quality based on hydrochemical and physico-chemical monitoring

Modeling spatiotemporal impacts of hydroclimatic extremes on groundwater recharge at a Mediterranean karst aquifer

Characterizing the heterogeneity of karst critical zone and its hydrological function: An integrated approach

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