ABSTRACT:

This dataset contains the anonymized responses from a global survey conducted in advance of the 2024 International Association of Hydrogeologists (IAH) Congress held in Davos, Switzerland. The aim of the survey was to gather insights into the educational backgrounds and experiences, career trajectories, and professional perspectives of individuals working in the field of hydrogeology. Respondents included students, academics, consultants, and practitioners from 82 countries, offering a diverse and international overview of current trends and challenges in hydrogeological education and workforce development.
In addition to survey responses, the dataset includes the full list of questions used in the survey. Note that the survey employed conditional logic: not all respondents were presented with the same set of questions, as certain follow-up items were shown based on earlier answers. Furthermore, some questions were optional, meaning that response counts may vary across items.

During the survey design and associated workshops and discussions at the Congress, particular efforts were made to ensure diverse voices were heard, and represented. However, the final dataset still reflects a bias toward respondents from the Global North. This limitation should be taken into account in any interpretation of the data.

This dataset is intended to support further research, comparative analyses, and ongoing dialogue about the future of hydrogeology education and professional training.

ABSTRACT:

This dataset supports the study titled ''Bridging the 39Ar–14C Groundwater Dating Gap: A Dual-Permeability Transport Perspective Based on Numerical Modeling and Field Data'' and contains the HydroGeoSphere (HGS) input files used to simulate reactive tracer transport in a reference dual-permeability groundwater model. The model was developed to investigate mechanisms driving discrepancies between apparent groundwater ages derived from Argon-39 and Carbon-14 tracers—particularly in systems where diffusive exchange and in situ underground production significantly bias the apparent tracer ages. The domain consists of a vertical fracture embedded in a low-permeability porous matrix, explicitly representing physical processes such as advection in the fracture, diffusion into and from the matrix, longitudinal dispersion, and depth-dependent production of 39Ar. Boundary and initial conditions were configured to simulate long-term transient flow over 20,000 years, allowing tracer activity to equilibrate under realistic hydrogeological conditions. This reference model forms the basis for a broader sensitivity analysis assessing the impact of fracture aperture, porosity, diffusion coefficients, and dispersivity. The dataset supports reproducibility of key numerical results and provides a framework for future groundwater age-dating studies using HGS in complex fractured media.

ABSTRACT:

This dataset supports the study titled "Modeling geologically complex volcanic watersheds for integrated water resources management," which presents a transferable and reproducible workflow for developing high-resolution 3D geological models for use in integrated surface–subsurface hydrological simulations. The workflow is demonstrated using the Mt. Fuji catchment in Japan—a region characterized by complex volcanic geology, active tectonics, and increasing stress on groundwater resources. The dataset includes all relevant model input files, exported hydrofacies surfaces, meshing outputs, and scripts used in the study. Specifically, the repository provides: (i) input files: digitized hydrofacies information as implemented in the NHM obtained directly from GETC and supplied as shapefiles, containing contour lines of the bottom bounding surface of each hydrofacies as well as polygons defining their horizontal extent ; (ii) 3D hydrofacies bounding surfaces in raster and DXF format, (iii) the 2D numerical mesh, and all the input configuration files for the HydroGeoSphere model used to run the simulations. The output files from the simulations are also availabe (Tecplot and Paraview-compatible files). These resources are intended to enable the visualization, reuse, adaptation, or extension of the modeling framework in similar volcanic or geologically complex regions. The dataset facilitates further work in groundwater resource evaluation, model calibration, scenario analysis, and environmental risk and hazard assessment.