A5000281196- Climate change and permafrost
- Planetary Science and Exploration
- Geology and Paleoclimatology Research
- Cryospheric studies and observations
- Methane Hydrates and Related Phenomena
- Space Science and Extraterrestrial Life
- Astro and Planetary Science
- Geological Studies and Exploration
- Arctic and Antarctic ice dynamics
- Space Exploration and Technology
- Indigenous Studies and Ecology
- Spacecraft and Cryogenic Technologies
- Geophysics and Gravity Measurements
- Aeolian processes and effects
- Antibiotic Use and Resistance
- Peatlands and Wetlands Ecology
- Antibiotic Resistance in Bacteria
- Spaceflight effects on biology
- Bacterial Identification and Susceptibility Testing
- Scientific Research and Discoveries
- Geochemistry and Geologic Mapping
- Hydrocarbon exploration and reservoir analysis
- Geological formations and processes
- Landslides and related hazards
- Drilling and Well Engineering
Center for Northern Studies
2012-2024
Université Laval
2012-2024
Centre National de la Recherche Scientifique
2024
Geosciences Paris-Saclay
2024
Hôpitaux Universitaires Paris-Ouest
2020
Western University
2016-2019
Université de Montréal
2012-2016
Thermo-erosion gullies in continuous permafrost regions where ice-wedge polygons are widespread contribute and change the drainage of periglacial landscapes. Gullying processes causing long-term impacts to Arctic landscape such as network restructuring, erosion, sediment transport. Between 2009 2013, 35 were mapped a polygon terrace valley Glacier C-79 on Bylot Island, Nunavut (Canada), one which was monitored for its hydrology. A gully (R08p) initiated 1999 low-center terrace. 202 over...
A thermo-erosion gully has been monitored in the valley of glacier C-79 on Bylot Island since 1999. The main channel reached 390 m length a few months after its initiation and grew between 38 50 m/year over following decade, for an overall approximated average 75 m/year. In 2009, total area, including relict channels, were 2500 25 000 2 , respectively. Gullies affect snow accumulation, therefore ground temperature, local water flow, drainage. Sinkholes, heads, pools, baydzherakhi, tunnels,...
Abstract. Ring forms are a type of landform consisting series ridges and troughs with circular, sinuous, anastomosing morphology. This striking was initially identified in the Canadian High Arctic on south coast Devon Island, Nunavut, Canada. Here, we report identification ring near Mokka Fiord Axel Heiberg Utilizing field observations, ultra-high-resolution light detection ranging (lidar), ground-penetrating radar (GPR), characterize compare morphometry sedimentology at other similar...
Abstract In evaluating the unique geomorphology of Hebrus Valles on Mars, an outflow channel southeast Utopia Planitia, we investigated role fluvial dynamics in forming subsurface conduits. Unlike typical Martian channels that terminate under younger sediment rocks, retains its downstream features, thus offering a window into surface and interactions between liquid water regolith. Employing physical lab simulations, utilized buried polygonal tunneling configurations sandy matrix to replicate...
Abstract. Low-center polygonal terrains with gentle sloping surfaces and lowlands in the high Arctic have a potential to retain water lower central portion of ice-wedge polygons are considered high-latitude wetlands. Such wetlands continuous permafrost regions an important ecological role otherwise generally arid region. In valley glacier C-79 on Bylot Island (Nunavut, Canada), thermal erosion gullies were rapidly eroding along ice wedges affecting integrity by breaching collapsing...
Abstract Slopes in and around Thomas Lee Inlet (Devon Island, Nunavut, Canada) are eroded by means of gullying, yet the driving factors, such as nature substrate availability different sources for water, influencing gully morphology remain poorly understood. Here we investigate factors that contribute to formation using a combination satellite mapping, field observations statistical analysis morphological data. In total, 161 gullies were mapped within 126 km 2 study area. Factors linked...
Abstract. Thermo-erosion gullies (TEGs) are one of the most common forms abrupt permafrost degradation. They generally form in ice-wedge polygonal networks where interconnected troughs can channel runoff water. Although TEGs within a single thawing season, it takes them several decades to stabilize completely. While inception has been examined studies, processes their stabilization remain poorly documented, especially cryostructures that following aggradation stabilizing TEGs. For this...
Abstract. Low-centre polygonal terrain developing within gentle sloping surfaces and lowlands in the high Arctic have a potential to retain snowmelt water their bowl-shaped centre as such are considered latitude wetlands. Such wetlands continuous permafrost regions an important ecological role otherwise generally arid region. In valley of glacier C-79 on Bylot Island (Nunavut, Canada), thermal erosion gullies rapidly eroding along ice wedges affecting integrity polygons by breaching...
The geothermal record for 1977–2014 from a 29 m deep borehole in permafrost on Mont Jacques-Cartier, southeastern Canada, shows substantial decadal fluctuations and an overall warming trend. An extremely thin winter snow cover the wind-blown summit favours presence of permafrost. As consequence, instability thermal regime was found to be direct response air temperature variations modelled data produced by National Center Environmental Prediction Atmospheric Research. At depth 14 m, increase...
Abstract. Vermicular Ridge Features (VRFs) comprise a series of ridges and troughs with circular, sinuous, anastomosing morphology composed clast-rich sandy diamict. VRFs were first reported on the south coast Devon Island, Nunavut, Canada, in Dundas Harbour region. Here, we document presence near Mokka Fjord Axel Heiberg Canada. We utilize field observations, ultra high resolution LiDAR, ground penetrating radar to characterize compare morphometry sedimentology other periglacial,...
Most of the Martian outflow channels have terminal areas buried beneath younger sediments northern plains. Hebrus Valles, situated SE Utopia Planitia, is exceptional in that its lowermost shows an abrupt disappearance into a large cluster pits. Our study aims to document possibility Valles interacting with some preexisting underground cavernous networks. We conducted series flume experiments simulate infiltration, including polygonally tunneling sand. To replicate morphology, we constructed...