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Estimación de la vulnerabilidad del acuífero del valle de Toluca mediante la combinación de un método paramétrico y el transporte advectivo  [Vulnerability assessment of the Toluca Valley aquifer combining a parametric approach and advective transport]

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doi: 10.21701/bolgeomin.128.1.002
Alternate Title:Vulnerability assessment of the Toluca Valley aquifer combining a parametric approach and advective transport
Authors:Gárfias, J.; Llanos, H.; Franco, R.; Martel, Richard
Author Affiliations:Primary:
Universidad Autónoma del Estado de México, Facultad de Ingeniería, Toluca, Mexico
Other:
Universidad del País Vasco, Spain
Institut National de la Recherche Scientifique, Centre Éau, Terre & Environnement, Canada
Volume Title:Boletín Geológico y Minero
Source:Boletín Geológico y Minero, 128(1), p.25-42. Publisher: Instituto Geológico y Minero de España (IGME), Madrid, Spain. ISSN: 0366-0176
Publication Date:2017
Note:In Spanish with English summary. 37 refs.; illus., incl. 2 tables, block diag., geol. sketch maps
Summary:Groundwater vulnerability assessment is an important task in water resources and land management. Depending on the availability of data and the complexity of the hydrogeological conditions, different approaches can be adopted. As an alternative, this study involves the use of a combined approach based on vulnerability methods and advective particle tracking to better understand the susceptibility to contamination in the Toluca valley aquifer. An intrinsic vulnerability map (DRASTIC) was used to identify areas that are more susceptible to ground water contamination. To estimate advective particle tracking, we developed a 3D flow model using VisualModflow and MODPATH to describe the regional flow of groundwater. Potential contamination sources based on landfill sites were comparatively high; approximately 76% are located in areas that could be susceptible to contamination through vertical infiltration, especially those that are located along the Lerma system of wells. Industrial parks located in the centre of the valley (83%), where continuous extraction of groundwater and land subsidence occurs, have been classified as high vulnerability zones, increasing the risk of contaminants from surface sources reaching the groundwater. In order to understand the susceptibility to contamination in the aquifer, various delineation approaches should be adopted and all the results that validate each other should be considered, thus making a good strategy for implementing different degrees of protection measures.
Subjects:Advection; Alluvium; Aquifer vulnerability; Aquifers; Clastic sediments; Data processing; Digital simulation; DRASTIC; Drawdown; Geologic hazards; Ground water; Igneous rocks; Industrial waste; Infiltration; Lacustrine sedimentation; Land management; Land subsidence; MODPATH; Natural hazards; Numerical models; Pollution; Preferential flow; Pyroclastic flows; Pyroclastics; Risk assessment; Sedimentation; Sediments; Three-dimensional models; Toxic materials; Transport; Tuff; Volcanic rocks; Waste disposal; Water pollution; Water quality; Water resources; Water wells; Wellhead protection; Mexico; Mexico state; Nevado de Toluca; Lerma River basin; Toluca Aquifer
Coordinates:N190500 N194400 W0992500 W0995800
Record ID:818749-2
Copyright Information:GeoRef, Copyright 2021 American Geosciences Institute. Reference includes data from Instituto Geologico y Minero de Espana, Madrid, Spain
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