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

Ground Water ◽  
2019 ◽  
Vol 57 (2) ◽  
pp. 201-204 ◽  
Author(s):  
Chloé Ollivier ◽  
Yoann Lecomte ◽  
Konstantinos Chalikakis ◽  
Naomi Mazzilli ◽  
Charles Danquigny ◽  
...  
Environments ◽  
2019 ◽  
Vol 6 (3) ◽  
pp. 39 ◽  
Author(s):  
Chloé Ollivier ◽  
Konstantinos Chalikakis ◽  
Naomi Mazzilli ◽  
Nerantzis Kazakis ◽  
Yoann Lecomte ◽  
...  

Aquifer vulnerability maps can improve groundwater management for sustainable anthropogenic development. The latest update of karst aquifer vulnerability mapping is named: the Protection of Aquifers base on Protection, Rock type, Infiltration and KArstification (PaPRIKa). This multi-criteria assessment method is based on a weighting system whose criteria are selected according to the aquifer under study. In this study, the PaPRIKa method has been applied in the Fontaine de Vaucluse karst aquifer using the novel plugin for Quantum Geographic Information System (QGIS) software. The Fontaine de Vaucluse karst aquifer is the largest European karst hydrosystem with a catchment area that measures approximately 1162 km 2 . Four thematic maps were produced according to the criteria of protection, rock type, infiltration, and karst development. The plugin expedites the weighting system test and generates the final vulnerability map. At a large scale the vulnerability map is globally linked with primary geomorphological units and at the local scale is mostly affected by karst features that drive hydrodynamics. In conclusion, the novel QGIS plugin standardizes the application of the PaPRIKa method, saves time and prevents user omissions. The final vulnerability map provides useful contributions that are most relevant to groundwater managers and decision-makers. We highlight the sensibility of the vulnerability map to the weighting system and validation issues of the vulnerability map are raised.


2021 ◽  
Author(s):  
Miguel Moreno-Gómez ◽  
Carolina Martínez-Salvador ◽  
Rudolf Lied ◽  
Catalin Stefan ◽  
Julia Pacheco

Abstract. Groundwater vulnerability maps are important decision support tools for water resources protection against pollution and helpful to minimize environmental damage. However, these tools carry a high subjectivity along the multiple steps taken for the development of such maps. Additionally, the theoretical models on which they are based do not consider important parameters such as pollutant concentration or pollutant residence time in a given section of the aquifer, solely focusing the analysis on a theoretical travel time from a release point towards a target. In this work, an integrated methodology for the evaluation of potential (intrinsic) and actual vulnerability is presented. This integrated method, named IKAV, was developed after the analysis of several study cases and the application of multiple intrinsic groundwater vulnerability methods in a selected study area. Also, a solute transport model served as the basis to define additional parameters for vulnerability analysis for areas severely affected by anthropogenic practices. A defined workflow and several criteria for parameters and attributes selection, rating and weighting assignment, and vulnerability classification are presented. The first application of the IKAV method was carried out in the Yucatan karst, demonstrating to be a reliable method for vulnerability estimation. Results demonstrated the scope of the IKAV method to highlight important regional conditions, minimizing the subjectivity, and expanding the analysis of vulnerability.


2014 ◽  
Vol 22 (7) ◽  
pp. 1561-1572 ◽  
Author(s):  
Arina Khan ◽  
Haris Hasan Khan ◽  
Rashid Umar ◽  
Muneeb Hasan Khan

2003 ◽  
Vol 42 (1) ◽  
pp. 141-156
Author(s):  
José Alfredo Ramos Leal ◽  
Ramiro Rodríguez Castillo

Evaluaciones de vulnerabilidad acuífera pueden realizarse mediante métodos como DRASTIC y AVI. Los mapas generados normalmente no son validados o verificados con datos de campo. Este trabajo propone alternativas de validación para mapeos de vulnerabilidad. El mapa DRASTIC del Valle del Río Turbio, en el Estado de Guanajuato, comprende un área de 1300 km². Este fue comparado con otro mapa de vulnerabilidad generado por el método AVI. Se realizó también una comparación de los parámetros DRASTIC. Se propone y justifica una modificación para el rango original para la profundidad al nivel estático DRASTIC, con un reescalamiento basado en su peso efectivo. Las tendencias de vulnerabilidad obtenidas fueron correlacionadas con información hidrogeoquímica. La distribución de valores para cloruros y SDT reflejan las áreas más vulnerables definidas por DRASTIC y AVI. Estas áreas corresponden al cauce del sistema fluvial León-Turbio. Algunas fuentes potenciales de contaminación están localizadas en zonas vulnerables. Los resultados demuestran la importancia de alternativas de validación. También muestran como en las zonas más vulnerables, solutos provenientes de fuentes de contaminación están afectando la calidad del agua subterránea.


2020 ◽  
Author(s):  
Jorge Jódar ◽  
Luis Javier Lambán ◽  
Antonio González ◽  
Sergio Martos ◽  
Emilio Custodio

<p>Water resources in high mountain karst aquifers are usually characterized by high precipitation than in the surrounding lowlands, with significant recharge and discharge that assure the sustainability of the downstream ecosystems. Consequently, these hydrogeological systems are highly vulnerable to the climate change. The mean transit time (MTT) is a key parameter to describe the behaviour of these hydrologic systems and also to assess their vulnerability.</p><p>In high mountain zones, precipitation can be as rainfall and as snowfall. The latter generates snow accumulation that in many cases partially or totally melts in spring and summer, producing small runoffs. In this framework, the karst aquifer recharge show mainly two different mechanisms: (1) diffuse recharge, in which runoff from rainfall and snowmelt enters the epikarst through the whole outcropping area and percolates through low permeability fissured blocks in the way down to the saturated zone, (2) locally concentrated recharge through highly conductive hydrologic features, including different solutional forms (e.g. sinkholes, dolines, etc.), which are generally well-connected to vertical fractures and the drainage network of the aquifer. These recharge mechanisms condition the aquifer response observed at the outlet of the systems at different temporal scales.</p><p>This study is conducted in the Paleocene-Eocene karst aquifer of the Ordesa and Monte Perdido National Park (PNOMP) Spain, particularly focussing on the Garcés karst system, whose discharge forms the emblematic Horsetail fall of the National Park. Different karstic forms appear throughout the study zone, including sinkholes, dry and ice caves, dolines and karren fields, thus generating a heterogeneous karstified hydrogeological system.</p><p>In this work, the difference on the hydrological response of the fine fissures and the main drainage aquifer network is investigated in terms of the corresponding MTT. To this end, both environmental (d<sup>18</sup>O and d<sup>18</sup>H in water) and fluorescent dye (uranine, eosine, amino G acid and naphtionate) tracers are used. The former characterize the MTT associated to the diffuse recharge process by means of the seasonal variation of the isotopic content in both precipitation (d<sub>P</sub>) and the Garcés spring discharge (d<sub>GW</sub>). The dye tracers are used to study the hydrogeological organization of the highly conductive drains and to estimate the corresponding MTTs.</p><p>The obtained MTT are 1.3 years and 9 days for the environmental and the fluorescent dye tracers, respectively. These values are not very long and point out the difficulties of the aquifer to bear large interannual recharge fluctuations. Additionally, the difference between the estimated MTT values underlines how the heterogeneities of the unsaturated zone may condition both the hydrogeological system response to recharge and the aquifer vulnerability.</p><p> </p>


2011 ◽  
Author(s):  
Esben Auken ◽  
Nikolaj Foged ◽  
Kurt Sorensen ◽  
Bjarke Rodth ◽  
Claus Ditlefsen ◽  
...  

2005 ◽  
pp. 643-652 ◽  
Author(s):  
Bernd Röttger ◽  
Reinhard Kirsch ◽  
Rud Friborg ◽  
Wolfgang Scheer ◽  
Steen Thomsen ◽  
...  

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