Management and research strategies of karst aquifers in Greece: Literature overview and exemplification based on hydrodynamic modelling and vulnerability assessment of a strategic karst aquifer

Kazakis, Nerantzis; Chalikakis, Konstantinos; Mazzilli, Naomi; Ollivier, Chloé; Manakos, Antonios; Voudouris, Konstantinos

doi:10.1016/j.scitotenv.2018.06.184

Cited by 52 publications

(32 citation statements)

References 55 publications

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“…The second factorial axis has higher values in calcic and/or karstic areas (Figure 5b), which are characterized by fast flows, both from surface water towards the water table, and within the water tables. These rapid flows associated with significant turbidity are known factors of bacteriological vulnerability for these aquifers [27][28][29][30]. The contamination, however, depends on the local context, namely the depth of the aquifer but also the presence or absence of large supply conduits of the saturated area, of breeding close to the catchment area, of wastewater treatment plants.…”

Section: Discrimination Of Bacteriological Contaminationmentioning

confidence: 99%

Dimension Reduction and Analysis of a 10-Year Physicochemical and Biological Water Database Applied to Water Resources Intended for Human Consumption in the Provence-Alpes-Côte d’Azur Region, France

Tiouiouine

Yaméogo

Vallès

et al. 2020

Water

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The SISE-Eaux database of water intended for human consumption, archived by the French Regional Health Agency (ARS) since 1990, is a rich source of information. However, more or less regular monitoring over almost 30 years and the multiplication of parameters lead to a sparse matrix (observations × parameters) and a large dimension of the hyperspace of data. These characteristics make it difficult to exploit this database for a synthetic mapping of water quality, and to identify of the processes responsible for its diversity in a complex geological context and anthropized environment. A 10-year period (2006–2016) was selected from the Provence-Alpes- Côte d’Azur region database (PACA, southeastern France). We extracted 5,295 water samples, each with 15 parameters. A treatment by principal component analysis (PCA) followed with orthomax rotation allows for identifying and ranking six principal components (PCs) totaling 75% of the initial information. The association of the parameters with the principal components, and the regional distribution of the PCs make it possible to identify water-rock interactions, bacteriological contamination, redox processes and arsenic occurrence as the main sources of variability. However, the results also highlight a decrease of useful information, a constraint linked to the vast size and diversity of the study area. The development of a relevant tool for the protecting and managing of water resources will require identifying of subsets based on functional landscape units or the grouping of groundwater bodies.

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Section: Discrimination Of Bacteriological Contaminationmentioning

confidence: 99%

Dimension Reduction and Analysis of a 10-Year Physicochemical and Biological Water Database Applied to Water Resources Intended for Human Consumption in the Provence-Alpes-Côte d’Azur Region, France

Tiouiouine

Yaméogo

Vallès

et al. 2020

Water

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“…The KarstMod model has been successfully applied to the Norville chalk aquifer [33], Dardenne's spring [34] and Fontaine de Vaucluse [28]. Also, it constitutes a valuable tool for hydrodynamic analysis in a context of intrinsic vulnerability and pollution risk mapping [35] or even for the assessment of the vadose zone contribution in the groundwater recharge [36]. Furthermore, the KarstMod platform (http://www.sokarst.org/) allows high flexibility in karstic groundwater flow modeling with the possibility to include, where appropriate, pumping discharge and loss.…”

Section: Conceptual Reservoir Modelingmentioning

confidence: 99%

Dynamics of the Flow Exchanges between Matrix and Conduits in Karstified Watersheds at Multiple Temporal Scales

Sivelle

Labat

Mazzilli

et al. 2019

Water

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The focus of this paper is to investigate the ability to assess the flow exchanges between the matrix and the conduits in two karstified watersheds (Aliou and Baget, Ariège, France) using the KarstMod modeling platform. The modeling is applied using hourly and daily time series. First, the flow dynamics between the conduit and the surrounding matrix are described on a rainfall event scale (i.e., a few days). The model allows us to describe a physical reality concerning the flow reversal between matrix and conduit when there is a significant rainfall event. Then, the long-term trends (i.e., inter-annual) in the matrix water level are evidenced using the moving average over shifting horizon method (MASH). The mean water level in the matrix dropped about 10% to 15% since the late 1960s. Also, the matrix recharge has been delayed from February in the late 1960s to April since the 1990s. Moreover, the contribution of the matrix in the total spring flow is estimated though mass balance. It is estimated that the annual matrix contribution in the total spring flow is about 3% and it can increase to up to 25% during periods with low rainfall.

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“…Such sensitivity analysis may support the operator's subjectivity and provides more evidence to managers. This free plugin is developed in an open access environment (github.com/Paprika-plugins/PaPRIKa); since its upload in November 2017 onto the QGIS platform (plugins.qgis.org/plugins/Paprika) it has been widely downloaded and used by the engineering and scientific community (Kazakis et al 2018). Feedback and discussions from users are expected to enrich future developments, in particular: (1) vulnerability assessment validation tools and (2) sensitivity analysis of criteria.…”

Section: Discussionmentioning

confidence: 99%

“…The PaPRIKa method for mapping intrinsic vulnerability is based on an analysis of geological and hydrological aquifer properties. The main concepts of the method are summarized as follows; for more details the reader is invited to read the PaPRIKa method guide (Dörfliger and Plagnes ) and useful application cases (e.g., Kavouri et al ; Kazakis et al ). The method consists of analyzing aquifer properties in terms of four thematic criteria: P, R, I, and Ka.…”

Section: Outline Of the Paprika Methodsmentioning

confidence: 99%

A QGIS Plugin Based on the PaPRIKa Method for Karst Aquifer Vulnerability Mapping

Ollivier¹,

Lecomte²,

Chalikakis

et al. 2019

Groundwater

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Management and research strategies of karst aquifers in Greece: Literature overview and exemplification based on hydrodynamic modelling and vulnerability assessment of a strategic karst aquifer

Cited by 52 publications

References 55 publications

Dimension Reduction and Analysis of a 10-Year Physicochemical and Biological Water Database Applied to Water Resources Intended for Human Consumption in the Provence-Alpes-Côte d’Azur Region, France

Dimension Reduction and Analysis of a 10-Year Physicochemical and Biological Water Database Applied to Water Resources Intended for Human Consumption in the Provence-Alpes-Côte d’Azur Region, France

Dynamics of the Flow Exchanges between Matrix and Conduits in Karstified Watersheds at Multiple Temporal Scales

A QGIS Plugin Based on the PaPRIKa Method for Karst Aquifer Vulnerability Mapping

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