A5025418488- Groundwater and Isotope Geochemistry
- Cryospheric studies and observations
- Methane Hydrates and Related Phenomena
- Geology and Paleoclimatology Research
- Climate change and permafrost
- Hydrology and Watershed Management Studies
- Arctic and Antarctic ice dynamics
- Groundwater flow and contamination studies
- Geological Studies and Exploration
- Atmospheric and Environmental Gas Dynamics
- Geochemistry and Elemental Analysis
- Extraction and Separation Processes
- Groundwater and Watershed Analysis
- Marine and coastal ecosystems
- Marine and environmental studies
- Mining Techniques and Economics
- Botany, Ecology, and Taxonomy Studies
- Flood Risk Assessment and Management
- Water resources management and optimization
- Water Quality and Resources Studies
- Fish Ecology and Management Studies
- Environmental and Ecological Studies
- Soil and Land Suitability Analysis
- Winter Sports Injuries and Performance
- Hydrology and Sediment Transport Processes
University of Alaska Anchorage
2021-2025
Providence College
2024
University of Alaska Fairbanks
2020-2024
Abstract Over the past two decades, considerable attention has been focused on lithium as a critical mineral resource. This is driven primarily by unprecedented need for this element in moving energy transition forward because of its utility lithium-ion batteries electric vehicles and storage. Lithium resources are found three main types deposits, but closed-basin brines known to currently contain most global resources. also present sedimentary-basin (oil field) geothermal-basin brines,...
Abstract Demand for lithium batteries is growing rapidly with the global push to decarbonize energy systems. The Salar de Atacama, Chile holds ∼42% of planet's reserves in form brine hosted massive evaporite aquifers. mining these brines and associated freshwater use has raised concerns over environmental responsibility extraction, yet large uncertainties remain regarding fundamental aspects governing hydrological processes environments. This incomplete understanding led perpetuation...
Abstract The Salar de Atacama contains one of the world's most important lithium resources and hosts unique fragile desert ecosystems. Water use issues hyper‐arid region have placed it at center global attention. This work combines geochemical hydrogeologic data with remote sensing analysis to address differences in water zones marginal environments salar. samples from across inflow brine transition were collected over period 2012–2016 analyzed for ẟD, 3 H, 87 Sr/ 86 Sr major minor elements....
Glacial meltwater contributions to streams depend on watershed characteristics that impact water quantity and quality, with potential changes as glaciers continue recede. The purpose of our study was investigate the influence glacier bedrock controls chemistry in glacial streams, focusing a range small large watersheds Alaska. Southcentral Alaska provides an ideal area due diverse geologic varying amounts coverage across watersheds. To spatial temporal variability type, we analyzed samples (...
Abstract Despite current and projected future reliance on lithium (Li) as a resource, deficiencies remain in genesis models of closed‐basin Li brines. Subsurface geochemical interactions between water bulk solid phases from lacustrine sediments, are shown here to be the most important process for brine sustainability Clayton Valley, NV deposit. A new subsurface basin model was developed used select Li‐bearing solids test release mechanisms Li. Ash (20–350 ppm Li) sediments (1,000–1,700...
Abstract Glacierized coastal catchments of the Gulf Alaska (GoA) are undergoing rapid hydrologic fluctuations in response to climate change. These deliver dissolved and suspended inorganic organic matter nearshore marine environments, however, these glacierized relatively understudied little is known about total solute particulate fluxes ocean. We present hydrologic, physical, geochemical data collected during April–October 2019–2021 from 10 streams along gradients glacial fed non‐glacial...
Abstract Rock weathering impacts atmospheric CO 2 levels with silicate rock dissolution removing 2, and carbonate dissolution, pyrite oxidation, organic carbon oxidation producing . Glacierization the hydrology geomorphology of catchments glacier retreat due to warming can increase runoff initiate landscape succession. To investigate impact these changes on catchment scale balances, we report monthly samples solute chemistry continuous discharge records for a sequence glacierized watersheds...
Abstract High latitude regions across the globe are undergoing severe modifications due to changing climate. A high region of concern is Gulf Alaska (GoA), where these changes in hydroclimate undoubtedly affect hydrogeochemistry freshwater discharging nearshore ecosystems region. To fill knowledge gap our understanding stream geochemistry with GoA, we compile water chemistry data from 162 sites With an inverse model, estimate fractional contributions solute fluxes weathering silicate,...
Abstract High‐latitude glacierized coastal catchments of the Gulf Alaska (GoA) are undergoing rapid hydrologic changes in response to climate change and glacial recession. These deliver important nutrients form both inorganic organic matter nearshore marine environment, yet relatively understudied with respect characterization sediment solute generation processes total yields. Using multiple linear regression informed by Bayesian Information Criterion analysis we empirically demonstrate how...
Abstract High latitude mountain environments are experiencing disproportionately adverse effects from climate change. The Gulf of Alaska (GoA) region is an embodiment this change, particularly concerning a shifting hydrologic balance. Even so, the magnitude and contribution fresh submarine groundwater discharge (fresh SGD) remains virtually unexplored within region, though it has gained increasing attention globally due to its chemical significance influence on coastal ecosystems. Here we...
Demand for lithium is expected to increase by as much 40 times over the coming decades. More than half world’s resources are found in brine aquifers at intersection of Chile, Argentina, and Bolivia. As exploration increases, accurate estimates water availability critical management decisions, particularly this region home communities ecosystems relying on limited resources. We develop first region-specific assessment with 28 active, near-production, prospective lithium-producing basins....
Iron (Fe) is a key trace nutrient supporting marine primary production, and its deposition in the surface ocean can impact multiple biogeochemical cycles. Understanding Fe cycling subarctic for tracking fate of particulate-bound sources oceans changing climate. Recently, isotope ratios have been proposed as potential tool to environment. Here, we investigate isotopic composition terrestrial including glacial sediment, loess, volcanic ash, wildfire aerosols, all from Alaska. Results show that δ
Abstract Coastal aquifers play an important role in marine ecosystems by providing high fluxes of nutrients and solutes via submarine groundwater discharge pathways. The physical chemical characterization these dynamic systems is foundational to understanding the extent magnitude hydrogeologic processes their subsequent contributions environment. We describe a km‐scale experimental field site located glaciofluvial delta entering Kachemak Bay, Alaska. Our applies geophysical (ERT HVSR),...
Earth and Space Science Open Archive This preprint has been submitted to is under consideration at Earth's Future. ESSOAr a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v1]Relic Groundwater Mega Drought Confound Interpretations of Water Sustainability Lithium Extraction in Arid LandsAuthorsBrendan J.MoranDavid F.BouttiDSarah V.McKnightiDJordanJenckesiDLee...
The Salar de Atacama contains one of the world’s most important lithium resources and hosts unique fragile desert ecosystems. Water use issues hyper-arid region have placed it at center global attention. This investigation is first robust assessment a salar system to incorporate geology, hydrogeology, geochemistry aquifer in inflow, transition zone nucleus. Multiple physico-chemical parameters including conductivity, temperature, Li Na, multiple isotopic indicators (3H, ẟD, 87Sr/86Sr) all...
High latitude mountain environments are experiencing disproportionately adverse effects from climate change. The Gulf of Alaska (GoA) region is an embodiment this change, particularly concerning a shifting hydrologic balance. Even so, the magnitude and contribution fresh submarine groundwater discharge (fresh SGD) remains virtually unexplored within region, though it has gained increasing attention globally due to its chemical significance influence on coastal ecosystems. Here we provide...
Abstract Despite the importance of surface water resilience to local ecosystems in arid and endorheic basins, current understanding sensitivity climate-driven hydrologic perturbations such environments remains limited basin-scale budget analysis often ignores complex relationships between these waters sources recharge. We investigate driving factors variability drought vulnerability for Altiplano-Puna region Andes South America with satellite imagery via Landsat-based JRC Surface Water...