Yukon – evolution of a drainage ditch near the road (Michel Sliger)

Yukon – evolution of a drainage ditch near the road (Michel Sliger)

A drainage ditch was 75 cm wide right after its excavation in October 2010. Two years later, it’s almost stabilized at 4 m wide. Few rivulets continue to lead some sediments movements building micro fluvial deltas. Pioneer vegetation colonized the bottom where the water doesn’t stand still or the sediment doesn’t accumulate (Figure 1).

Mass movement monitoring using a VX station (by Michel Paquette)

Mass movement monitoring using a VX station (by Michel Paquette)

Precision work. This photo was taken looking through the targeting lense of the Geocryolab Trimble VX spatial station, which has the capacity to automatically follow the prism Gautier is holding. This allows him to work alone while performing measurements at a great degree of precision (~1 mm). On this photo, Gautier is recording the position
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What is the impact of subsurface water flow on the thermal regime of the ground? (Daniel Fortier)

What is the impact of subsurface water flow on the thermal regime of the ground? (Daniel Fortier)

In response to climate changes, permafrost thaw and active layer deepening shall favor the increase of subsurface water flow. Geocryolab designed experimental cells to evaluate the thermal ipact of groundwater on the ground thermal regime. Why? Because very few information is currently available about this topic and because laboratory study allows for a simplification of
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Influence of urbanization on permafrost (Lin Chen)

Influence of urbanization on permafrost (Lin Chen)

The urbanization has significant influence on permafrost degradation. The degradation of permafrost in the urban area in turn has been affecting the residents’ lives, such as water supply and stability of buildings. In 2008, ground penetration radar (GPR) was conducted by Lin Chen and his teammates to investigate the influence of urbanization on permafrost.

The periglacial environment of the high summits of the Chic-Chocs Mountains (Gautier Davesne)

The periglacial environment of the high summits of the Chic-Chocs Mountains (Gautier Davesne)

On the summits of the Chic-Chocs Mountains (North of Appalachians Range, Gaspé Peninsula) exceeding 1100 to 1200 m a.s.l., a typical periglacial environment is present. Above this elevation, only various alpine tundra species as lichens, herbs and mosses can grow on the blocky materials which characterize the ground surface (fig. 1). At Mont Jacques-Cartier (1273
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Yukon – Ecological gradation (Michel Sliger)

Yukon – Ecological gradation (Michel Sliger)

The limit separating the site’s different ecosystems is generally gradual at the Beaver Creek study site (Yukon). From the ground, they are definitely unperceivable. The 6m high road embankment is a better point of view but the best one would be the neighbour hill. According to the local knowledge, the 8km walk across the muskeg to the plateau
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Differential Scanning Calorimetry (Karine Rioux)

Differential Scanning Calorimetry (Karine Rioux)

Differential Scanning Calorimetry is an advanced technology used to define the heat capacity, conductivity and thermal diffusivity of different materials.This is an essential tool to improve the understanding of heat transfer processes in soils.

Imagery by tomodensitometry (CT-Scan) of permafrost cores: a useful tool for geomorphologists (Audrey Veillette)

Imagery by tomodensitometry (CT-Scan) of permafrost cores: a useful tool for geomorphologists (Audrey Veillette)

The results obtained by CT-Scan imagery help us in the fine scale characterization of the cryostratigraphy of our samples. This gives us information about the formation, degradation and recovery processes of permafrost.  

Ward Hunt Island: looking for fresh water…(Michel Paquette)

Ward Hunt Island: looking for fresh water…(Michel Paquette)

Summer is late on this June 26th 2013 picture, as Michel Paquette gets ready to collect water from the shallow moat on Ward Hunt Lake (83.05° N). The picture was taken as Michel and Manuel Verpaelst were almost a month into their presence on the field, after spending 19 days in Resolute awaiting for a
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Ground ice at Cape Marre-Sale, Yamal Peninsula, Russia (Daniel Fortier)

Ground ice at Cape Marre-Sale, Yamal Peninsula, Russia (Daniel Fortier)

The origin of ground ice is important to understand how the landscape evolved in the past and will continue to change in response to climate change. Geocryolab members and colleagues worked on the origin of ground ice at Cape Marre-Sale. We proposed that buried glacial-related ice forms vast portion of the permafrost of these icy
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