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Recent Advances in Karstic Hydrogeology, 2nd Edition
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Recent Advances in Karstic Hydrogeology, 2nd Edition

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Hydrogeology".

Deadline for manuscript submissions: 31 August 2024 | Viewed by 2214

Special Issue Editors

Prof. Dr. Giuseppe Sappa

E-Mail Website
Guest Editor
Department of Civil, Building, and Environmental Engineering, Sapienza University of Rome, Rome, Italy
Interests: karst spring; water management; groundwater monitoring; hydrogeochemistry
Special Issues, Collections and Topics in MDPI journals
Dr. Francesco Maria De Filippi

E-Mail Website
Guest Editor
Department of Civil, Building, and Environmental Engineering, Sapienza University of Rome, Rome, Italy
Interests: karst spring; water management; groundwater monitoring; hydrogeochemistry

Special Issue Information

Dear Colleagues,

Karst hydrogeology is one of the most challenging topics for related researchers, water managers. The presence of voids, conduits and karst features lead to high heterogeneity and anisotropy, implying often a multidisciplinary approach for this kind of studies since both surface and subsurface hydraulic dynamics are present.

These characteristics make karst aquifers complex to study and difficult to manage because of its intrinsic high vulnerability to pollutants.

Nonetheless, karst aquifers constitute the major percentage of exploitable drinking water resource for many countries all over the world.

Following the successful completion of the first volume of the Special Issue “Recent Advances in Karstic Hydrogeology”, the second version of this Special Issue aims to collect the most recent and advanced research studies on this topic to overcome issues related to karst water resources such as vulnerability assessments, climate change and the resilience of karst water exploitation systems, karst coastal aquifer management and modelling.

Papers focusing on hydrochemical models are welcomed, as well as conceptual models and recent machine-learning and A.I. models on subsurface flow.

Prof. Dr. Giuseppe Sappa
Dr. Francesco Maria De Filippi
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • karst
  • climate change
  • vulnerability
  • karst modelling
  • groundwater management
  • isotopes
  • geochemistry

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Published Papers (2 papers)

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23 pages, 34766 KiB  
Article
Modeling the Impact of Groundwater Pumping on Karst Geotechnical Risks in Sete Lagoas (MG), Brazil
by Paulo Galvão, Camila Schuch, Simone Pereira, Julia Moura de Oliveira, Pedro Assunção, Bruno Conicelli, Todd Halihan and Rodrigo de Paula
Water 2024, 16(14), 1975; https://doi.org/10.3390/w16141975 - 12 Jul 2024
Viewed by 482
Abstract
Karst terrains can undergo geotechnical issues like subsidence and collapse, occurring both naturally and anthropogenically. The municipality of Sete Lagoas, in the State of Minas Gerais, Brazil, is notable for overexploiting a karst aquifer, resulting in adverse effects such as drying lakes and [...] Read more.
Karst terrains can undergo geotechnical issues like subsidence and collapse, occurring both naturally and anthropogenically. The municipality of Sete Lagoas, in the State of Minas Gerais, Brazil, is notable for overexploiting a karst aquifer, resulting in adverse effects such as drying lakes and geotechnical problems. This study aims to assess the progression of geotechnical risk areas in the central urban area from 1940 to 2020 and simulate future scenarios until 2100. To achieve this, historical hydraulic head data, a three-dimensional geological model, and a karst geotechnical risk matrix were used to develop a calibrated FEFLOW numerical model. Results show that before the installation of the first pumping well in 1942, the natural groundwater flow direction was primarily northeast. However, in the 1980s, a cone of depression emerged in the city, creating a zone of influence (ZOI) with a surface area of around 30 km2. Between 1940 and 2020, twenty geotechnical collapse events occurred in defined risk zones, often in regions where limestone outcrops or is mantled in association with the ZOI. In future scenarios, if the 2020 total annual groundwater pumping rate (Q = 145,000 m3/d) remains constant until 2100, the geotechnical risk zones will continue expanding laterally. To establish a sustainable risk state, a 40% decrease in the pumping rate (Q = 85,500 m3/d) is necessary. Full article
(This article belongs to the Special Issue Recent Advances in Karstic Hydrogeology, 2nd Edition)
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18 pages, 3426 KiB  
Article
Effects of Geometry on Artificial Tracer Dispersion in Synthetic Karst Conduit Networks
by Amal Rabah, Manuel Marcoux and David Labat
Water 2023, 15(22), 3885; https://doi.org/10.3390/w15223885 - 7 Nov 2023
Viewed by 1054
Abstract
This paper presents the modeling results of tracer test simulations performed using COMSOL Multiphysics (version 6.1), a powerful software for multiphysics simulation. The simulations consist of the propagation of artificial tracers injected into different model configurations. This study is based on computational fluid [...] Read more.
This paper presents the modeling results of tracer test simulations performed using COMSOL Multiphysics (version 6.1), a powerful software for multiphysics simulation. The simulations consist of the propagation of artificial tracers injected into different model configurations. This study is based on computational fluid dynamics (CFDs), which allows us to take into consideration the turbulent regime of the water flow in conduits. The objective of this contribution is to identify the relationship between the tracer dynamics and the geometric parameters of synthetic karstic systems via a systematic investigation of the occurrence of dual-peaked breakthrough curves (BTCs) in tracer tests. Various conduit structures were proposed by modifying five key factors: conduit diameter, presence of pools, connection angle between conduits, distance of the outlet from the inlet, and number of branches. The next step will be to confront these computational experiments with real-world tracer test experiments. Full article
(This article belongs to the Special Issue Recent Advances in Karstic Hydrogeology, 2nd Edition)
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