Field Monitoring, GIS, Remote Sensing, Geophysical Techniques, and Hydrochemical Analysis in Groundwater Investigations

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 2367

Special Issue Editors


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Guest Editor
Institute of Geophysics and Meteorology, University of Cologne, Pohligstrasse 3, 50969 Cologne, Germany
Interests: magnetic; gravity; ERT and TEM data acquisition; processing & inversion techniques of applied geophysics; environmental and groundwater geophysics

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Guest Editor
Water and Water Structures Engineering Department, Faculty of Engineering, Zagazig University, Zagazig 44519, Egypt
Interests: sustainability studies and sustainable use and management of water resources
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Special Issue Information

Dear Colleagues,

Integrating remote sensing (RS) and geophysical techniques in hydrogeophysical investigations has proven to be a powerful approach to understanding and characterizing subsurface water systems. By combining the strengths of both disciplines, researchers can comprehensively understand groundwater resources, their spatial distribution, and their hydrogeological properties. RS techniques, such as satellite imagery, airborne sensors, and radar systems, provide valuable data pertaining to the Earth's surface and its surroundings. These techniques offer a wide range of information, including land cover, vegetation patterns, surface water bodies, and thermal properties. RS data serve as a foundation for identifying potential areas of groundwater occurrence, recharge zones, and discharge areas. On the other hand, geophysical methods provide insights into the subsurface characteristics and structures. By measuring and analyzing the physical properties of the subsurface, geophysical techniques can help determine the depth and thickness of aquifers, identify the geological formations and structures influencing groundwater flow, and estimate hydrogeological parameters such as porosity and permeability. Moreover, advances in data fusion and geospatial analysis enhance the integration of RS and geophysical methods. Geographic Information Systems (GIS) play a key role in integrating, visualizing, and analyzing these data for a comprehensive understanding of subsurface hydrogeology. Data fusion combines datasets, thereby enhancing the reliability of hydrogeophysical investigations. This integration has significant implications for groundwater management, resource assessment, and environmental monitoring, enabling the comprehensive characterization of water systems, supporting sustainable strategies, and assessing contamination risks. Successful fusion requires careful attention to data compatibility, scale, and validation through field measurements.

This Special Issue of Water aims to provide an extensive overview of integrating RS and geophysical techniques in hydrogeophysical investigations. This approach offers a robust means of understanding and characterizing groundwater resources. By coupling RS data/tools with geophysical measurements/techniques, researchers and scientific communities can better understand subsurface hydrogeological conditions, leading to enhanced resource management and more informed environmental decision-making processes. Based on the above introduction, this Special Issue focuses on original high-quality articles addressing one or more of the following topics, including state-of-the-art reviews:

  • Assessment of using RS, geophysical, and GIS in groundwater investigation;
  • Groundwater monitoring;
  • Groundwater-surface water interaction monitoring;
  • Assessment of existing groundwater resources;
  • Assessment of groundwater recharges and aquifer sustainability;
  • Three-dimensional mapping and characterizing the aquifer heterogeneities;
  • Identification/delineation and assessment of groundwater contamination sources;
  • Mapping groundwater contamination;
  • Groundwater advanced modeling to support its sustainability;
  • Connectivity between groundwater and aquatic ecosystems;
  • Connectivity between groundwater and sustainable agriculture;
  • Groundwater and environmental change;
  • Regional and transboundary groundwater (monitoring, assessment, challenges, etc.).

Dr. Ismael Ibraheem
Prof. Dr. Abdelazim Negm
Guest Editors

Manuscript Submission Information

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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

  • remote sensing
  • geophysical methods
  • geographical information system
  • joint interpretation
  • hydrogeophysical investigations
  • groundwater investigation
  • groundwater monitoring
  • groundwater assessment
  • groundwater sustainability
  • aquifer characterization
  • sustainable water management
  • groundwater quality
  • groundwater contamination
  • groundwater–surface water interaction
  • groundwater resources
  • advanced groundwater modeling
  • investigation of aquifer heterogeneities
  • regional and transboundary groundwater

Published Papers (1 paper)

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Research

18 pages, 8239 KiB  
Article
Groundwater Storage Variations in the Main Karoo Aquifer Estimated Using GRACE and GPS
by Hussein A. Mohasseb, Wenbin Shen, Jiashuang Jiao and Qiwen Wu
Water 2023, 15(20), 3675; https://doi.org/10.3390/w15203675 - 20 Oct 2023
Cited by 3 | Viewed by 1146
Abstract
The Gravity Recovery and Climate Experiment (GRACE) provided valuable insights into variations in Groundwater Storage (GWS). However, the sensitivity of utilizing Global Positioning System (GPS) time series displacement data for detecting changes in GWS remains a subject of ongoing discussion. In order to [...] Read more.
The Gravity Recovery and Climate Experiment (GRACE) provided valuable insights into variations in Groundwater Storage (GWS). However, the sensitivity of utilizing Global Positioning System (GPS) time series displacement data for detecting changes in GWS remains a subject of ongoing discussion. In order to estimate the spatiotemporal GWS, we selected a vertical displacement from 65 GPS stations located in the Main Karoo Aquifer (MKA). We performed total water storage (TWS) inversion on GPS vertical displacement components; after that, we deducted surface water components based on the Global Land Data Assimilation System (GLDAS) from January 2013 to December 2021. Additionally, for validation, we compared our GWS estimates with the GRACE-derived GWS and observed GWS values derived from the WaterGAP Global Hydrology Model (WGHM) compartments. We discovered that the TWS and GWS trends derived from GPS and GRACE exhibited similar behaviors with trend values overestimated by GRACE and WGHM. Our findings demonstrate relatively typical behavior between GPS and GRACE in the first and second principal component behaviors (PCs) and empirical orthogonal function (EOF) loadings (or spatial patterns). With a contribution of 71.83% to GPS-derived GWS variability and 68.92% to GRACE-derived GWS variability, EOF-1 is a relatively potent factor. For Principal Components PC1 and PC2, the GRACE and GPS PCs have correlation coefficients of 0.75 and 0.84, respectively. Finally, with higher temporal resolution, GPS can perform the same task as GRACE in hydrological applications. In addition, GPS can add important and valuable information to assess regional GWS change. Full article
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