A5019670468- Groundwater flow and contamination studies
- Groundwater and Isotope Geochemistry
- Hydrocarbon exploration and reservoir analysis
- Climate change and permafrost
- Methane Hydrates and Related Phenomena
- Geothermal Energy Systems and Applications
- Atmospheric and Environmental Gas Dynamics
- Geology and Paleoclimatology Research
- CO2 Sequestration and Geologic Interactions
- Cryospheric studies and observations
- Hydrology and Watershed Management Studies
- Reservoir Engineering and Simulation Methods
- Hydraulic Fracturing and Reservoir Analysis
- Landslides and related hazards
- Geological Studies and Exploration
- Geophysical and Geoelectrical Methods
- Geochemistry and Geologic Mapping
- Water resources management and optimization
- Karst Systems and Hydrogeology
- Urban Heat Island Mitigation
- Water-Energy-Food Nexus Studies
- Geophysics and Gravity Measurements
- Tree-ring climate responses
- Soil and Unsaturated Flow
- Geological formations and processes
University of Saskatchewan
2016-2025
University of Arizona
2020-2025
Global Institute for Water Security
2021-2025
Rogers (United States)
2022-2024
St. Francis Xavier University
2005-2011
University of East Anglia
2010
Weatherford College
2003-2008
University of Manitoba
2003-2004
Trinity Health
1932
This paper is the outcome of a community initiative to identify major unsolved scientific problems in hydrology motivated by need for stronger harmonisation research efforts. The procedure involved public consultation through online media, followed two workshops which large number potential science questions were collated, prioritised, and synthesised. In spite diversity participants (230 scientists total), process revealed much about priorities state our science: preference continuity...
Groundwater is a crucial resource for current and future generations, but it not being sustainably used in many parts of the world. The objective this review to provide clear portrait global-scale groundwater sustainability, systems, resources Anthropocene inspire pivot toward more sustainable pathways use. We examine from three different related perspectives sustainability science, natural governance management, Earth System science. An approach highlights connections between other system...
Abstract The notion of convergent and transdisciplinary integration, which is about braiding together different knowledge systems, becoming the mantra numerous initiatives aimed at tackling pressing water challenges. Yet, transition from rhetoric to actual implementation impeded by incongruence in semantics, methodologies, discourse among disciplinary scientists societal actors. Here, we embrace “integrated modeling”—both quantitatively qualitatively—as a vital exploratory instrument advance...
The recent increase in fresh‐water discharge during low‐flow conditions as observed many (sub‐)Arctic Rivers has been attributed to a reactivation of groundwater flow systems caused by permafrost degradation. Hydrogeological simulations show how an idealized aquifer system evolve on timescales decades centuries response climate warming scenarios progressive lowering the table establishes growing shallow system. Ultimately, disappearance residual at depth causes sudden establishment deep...
The urban heat island effect has received significant attention in recent years due to the possible on long‐term meteorological records. Recent studies of this phenomenon have suggested that may not be important estimates regional climate change once data are properly corrected. However, surface air temperatures within environments variation, making correction difficult. In current study, we examine subsurface an environment and surrounding rural area help characterize nature variability....
Using numerical models, we evaluate hydrogeological regime changes in high‐latitude river basins under conditions of ground surface warming. These models describe transient heat‐ and fluid flow coupled to the impacts phase‐changes from ice liquid water. We consider an idealized unconsolidated sedimentary aquifer system which groundwater is driven by topography, representing a series small drainage riverine terrain relatively subdued topography. Various temporal spatial temperature are...
The urban heat island effect and climate change have not only caused surface temperature increase in most areas, but during the last hundred years also enhanced subsurface by several degrees. This phenomenon yields aquifers with elevated temperature, which are attractive though underestimated thermal energy reservoirs. Detailed groundwater measurements Cologne (Germany) Winnipeg (Canada) reveal high distributions centers of both cities indicate a warming trend up to 5 °C. case-specific...
Abstract Watersheds have served as one of our most basic units organization in hydrology for over 300 years (Dooge, 1988, https://doi.org/10.1080/02626668809491223; McDonnell, 2017, https://doi.org/10.1038/ngeo2964; Perrault, 1674, https://www.abebooks.com/first‐edition/lorigine‐fontaines‐Perrault‐Pierre‐Petit‐Imprimeur/21599664536/bd ). With growing interest groundwater‐surface water interactions and subsurface flow paths, hydrologists are increasingly looking deeper. But the dialog between...
The subsurface temperature field beneath Winnipeg, Canada, is significantly different from that of the surrounding rural areas. Downward heat flow to depths as great 130 m has been noted in some areas city and groundwater temperatures a regional aquifer have risen by much 5°C Numerical simulation transport supports conjecture these changes can be largely attributed loss buildings at any given point sensitive distance age buildings. effect most noticable when are closely spaced, which typical...
Abstract Brines are commonly found at depth in sedimentary basins. Many of these brines known to be connate waters that have persisted since the early Paleozoic Era. Yet questions remain about their distribution and mechanisms for retention Earth's crust. Here we demonstrate there is insufficient topography drive dense fluids from bottom deep Our assessment based on driving force ratio indicates basins with > 1 contain frequently host large evaporite deposits. These stagnant conditions...
Abstract Global groundwater volumes in the upper 2 km of Earth's continental crust—critical for water security—are well estimated. Beyond these depths, a vast body largely saline and non‐potable exists down to at least 10 km—a volume that has not yet been quantified reliably global scale. Here, we estimate amount present crust by examining distribution sedimentary crystalline rocks with depth applying porosity‐depth relationships. We demonstrate 2–10 zone (what call “deep groundwater”)...
Abstract Groundwater is one of the largest reservoirs water on Earth but has relatively small fluxes compared to its volume. This behavior exaggerated at depths below 500 m, where majority groundwater exists and residence times millions even a billion years have been documented. However, extent interactions between deep (>500 m) rest terrestrial cycle global scale are unclear because challenges in detecting their contributions streamflow. Here, we use chloride mass balance approach...
Abstract Groundwater systems are commonly defined as renewable or non‐renewable based on natural fluxes of recharge estimates aquifer storage and groundwater residence time. However, we show here that the principle capture (i.e., how discharge change due to pumping) challenges simple definitions so a system cannot be in itself, but only with reference is being used. We develop propose more hydraulically informed for flux‐renewable storage‐renewable use, combined definition encompasses both...
Abstract Stable isotopes have been used to study large‐scale changes in hydrology during the Pleistocene epoch. Many of these efforts required an estimate δ 18 O value runoff generated by melting ice sheets. There is no consensus on representative values. Here we examine values from fossil groundwater samples and isotope‐enabled general circulation models (GCMs) better understand isotopic composition Laurentide Ice Sheet (LIS). Groundwater ranged −12.5 −25.3‰ tended increase southward. The...
Abstract Deep meteoric waters comprise a key component of the hydrologic cycle, transferring water, energy, and life between Earth's surface deeper crustal environments, yet little is known about nature extent water circulation. Using stable isotopes, we show that maximum circulation depths across North America vary considerably from <1 to 5 km, with deepest in Western areas greater topographic relief. Shallower occurs sedimentary shield‐type environments subdued topography. The amount...
Abstract Heat transport in aquifers is becoming an increasingly important topic due to recent growth the use of ground water thermal applications. However, effect heterogeneity on heat has yet be examined same detail as it been for solute transport, and unclear what this may have our ability create accurate models. This study examines issue through stochastic modeling using geostatistics two with low high degrees heterogeneity. The results indicate that there considerable uncertainty...
Temperature measurements have been used by a variety of researchers to gain insight into groundwater discharge patterns. However, much this research has reduced the problem heat and fluid flow in one dimension for ease analysis. This approach is seemingly at odds with goal determining spatial variability specific discharge, which implies that temperature field will vary more than dimension. it unclear how important resulting discrepancies are context surface water bodies. In study,...