A5002143100- Geology and Paleoclimatology Research
- Climate change and permafrost
- Cryospheric studies and observations
- Tree-ring climate responses
- Geological formations and processes
- Pleistocene-Era Hominins and Archaeology
- Hydrology and Watershed Management Studies
- Hydrocarbon exploration and reservoir analysis
- Soil erosion and sediment transport
- Geochemistry and Geologic Mapping
- Seismic Imaging and Inversion Techniques
- Arctic and Antarctic ice dynamics
- Plant Water Relations and Carbon Dynamics
- Methane Hydrates and Related Phenomena
- Agricultural risk and resilience
- Geological and Geochemical Analysis
- Peatlands and Wetlands Ecology
- Hydrology and Sediment Transport Processes
- Ecology and biodiversity studies
- Botany, Ecology, and Taxonomy Studies
- Agricultural Innovations and Practices
- Climate change impacts on agriculture
- Aeolian processes and effects
- Paleontology and Stratigraphy of Fossils
- Historical and Environmental Studies
University of Saskatchewan
2019-2022
Natural Resources Canada
2021
Institut National de la Recherche Scientifique
2012-2021
Northern Arizona University
2015-2019
Institut de physique du globe de Paris
2017
Grantmakers for Effective Organizations
2017
Bedford Institute of Oceanography
2017
Geological Survey of Canada
2017
Queen's University
2006-2008
Université de Montréal
2003
ABSTRACT Glass composition‐based correlations of volcanic ash (tephra) traditionally rely on extensive manual plotting. Many previous statistical methods for testing are limited by using geochemical means, masking diagnostic variability. We suggest that machine learning classifiers can expedite correlation, quickly narrowing the list likely candidates well‐trained models. Eruptives from Alaska's Aleutian Arc‐Alaska Peninsula and Wrangell field were used as a test environment 11 supervised...
Annually laminated (varved) sediments from Sanagak Lake in the Canadian middle Arctic were used to reconstruct past spring discharge. Two years of sediment transport observations demonstrate that delivery this nival regime is limited primarily short period maximum Interannual variability catchment snow water equivalence (SWE) was primary control over length peak discharge period, resulting substantially increased and deposition lake with higher SWE. Analysis annual accumulation reveals high...
Abstract Despite extensive paleoenvironmental research on the postglacial history of Kenai Peninsula, Alaska, uncertainties remain regarding region's deglaciation, vegetation development, and past hydroclimate. To elucidate this complex environmental history, we present new proxy datasets from Hidden Kelly lakes, located in eastern lowlands at foot Mountains, including sedimentological properties (magnetic susceptibility, organic matter, grain size, biogenic silica), pollen macrofossils,...
Abstract. Analysis of short sediment cores collected in Grand Lake, Labrador, revealed that this lake is an excellent candidate for the preservation a laminated record. The great depth availability fine sediments along its tributaries and important seasonal river inflow have favoured formation 160-year-long clastic varved sequence. Each varve represents 1 hydrological year. Varve mainly related to spring discharge conditions with contributions from summer autumn rainfall events....
Abstract. Datasets from a 4-year monitoring effort at Lake Peters, glacier-fed lake in Arctic Alaska, are described and presented with accompanying methods, biases, corrections. Three meteorological stations documented air temperature, relative humidity, rainfall different elevations the Peters watershed. Data ablation stake on Chamberlin Glacier were used to quantify glacial melt, measurements two hydrological reconstruct continuous discharge for primary inflows Carnivore creeks. The lake's...
Abstract Sediments that accumulate in high-latitude lakes serve as valuable environmental archives of changing conditions a region currently undergoing rapid change. A previously unexplored sedimentary sequence reaching back 16,000 years from Lakes Peters and Schrader (Neruokpuk Lakes) the northeastern Brooks Range (69°N), Alaska, shows distinct changes accumulation rates biophysical properties including bulk density (BD), organic matter (OM) content, grain-size distribution at five widely...
Abstract. Datasets from a four-year monitoring effort at Lake Peters, glacier-fed lake in Arctic Alaska, are described and presented with accompanying methods, biases, corrections. Three meteorological stations documented air temperature, relative humidity, rainfall different elevations the Peters watershed. Data ablation stake on Chamberlin glacier were used to quantify glacial melt, measurements two hydrological reconstruct continuous discharge for primary inflows Carnivore Creeks. The...
The timing of clastic sedimentation in two glacial‐fed lakes with contrasting watersheds was monitored using sequencing sediment traps for consecutive years at Allison Lake (Chugach Range, Alaska) and four months Shainin (Brooks Alaska). is a weakly stratified lake fed by distant glaciers, whereas more strongly predominantly proximal glaciers. At Lake, accumulation started late June reached its maximum mid‐August, just before mixing during period low river discharge. grain size the reaching...
This paper analyzes short gravity cores sampled along transects in three adjacent deep fjord-lakes (lakes Pentecôte, Walker, and Pasteur) on the Québec North Shore, eastern Canada, to evaluate distribution of laminated sediments potential for varve formation. Facies analysis based lithological description, digital photos, CT-scan images, bathymetric data allowed identification four main sediment facies, namely sediments, partially bioturbated massive sediments. Direct evidence that Lake...
Abstract. Analysis of short sediment cores collected in Grand Lake, Labrador, revealed that this lake is an excellent candidate for the preservation laminated sediments record. The great depth availability fine along its tributaries, and important seasonal river inflow have favored formation a 160 years-long clastic varved sequence. Each varve represents one hydrological year. Varve mainly related to spring discharge conditions with minor contributions from summer autumn rainfall events....