Congrats to Karine Rioux for its excellent talk at Géoforum!

April 24, 2017 in @en, Article

On the 21st of April, Karine Rioux presented the main part of her honors bachelor project. Her presentation was part of the GeoForum 2017 of the Geography department (University of Montreal). Her project consists in evaluating the efficiency of a mitigation technique; the use of snowsheds to increase the thermal stability of permafrost along an experimental section of the Alaska Highway (Yukon). Karine skillfully demonstrated thermal dynamics of the air and the firsts centimeters of permafrost under the snowsheds, compared with a test section. Her good work and communicating skills won her the prize of the best honors presentation in physical geography! Congratulations Karine!

Yukon – Ecological gradation (Michel Sliger)

November 8, 2016 in Article, focus-en, post

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 on the left of the picture take two days. The St-Elias range (the white mountains in the background) are 23km south-westward (Figure 1).

tundra-arbres

Figure 1: Succession of ecosystem, view from the road

Old Crow : risk assessment

September 8, 2015 in post

The Geocryolab is working since 3 years in collaboration with the Yukon Research Center for an exciting project assessing environmental hazards related to climate changes for Yukon communities. One of its members (Katerine Grandmont) begins a 10 days fieldtrip in the small community of Old Crow, north of the Arctic Circle, to collect data that will help to characterize the vulnerability of the ground on which the village is built.

Old Crow Map

Old Crow, Yukon

 

Old Crow Picture

Old Crow, from a nearby hill

Yukon fieldwork : finding ice-wedges

September 4, 2015 in post

Our Geocryolab colleagues Lyna Lapointe, Benoit Loranger and Manuel Verpaelst are currently in their way for the last fieldtrip of the season to westernmost village of Canada (Beaver Creek, Yukon).

The snow is already waiting for their one-week mission. On the menu: ground penetrating radar, gravity meter, drilling and environmental monitoring for this final part of the ice-wedges detection project. Have a nice fieldtrip!

Map Yukon Besver Creek

Beaver Creek – Yukon – located at the red star on the map

Blog – by Isabelle de Grandpré

August 18, 2015 in post

August 14, 2015

It always makes me feel the same when I get in the field: mixed feelings of stress and serenity. Our field mission was clear: detect the presence of ice wedges using different techniques, in probably the most remote place accessible by road in the entire Yukon.

It is by riding our Canadream Camper and our beautifully clean white pickup truck that we hit the road to km 124 of the Dempster Highway. The days go by but not alike: heat waves, snow, high winds, annual gathering of mosquitoes and black fly – a good idea this camper finally.

Yukon-truck

The essential and much appreciated field pickup truck

How are detected ice wedges when its not possible to see them on the ground? Easy. We need ground-penetrating radar, a drill, a lot of patience and a good mental balance (especially when it comes to do 200 m of GPR transect with antennas that require step size of 10 cm).

Yukon GPR

Georadar in action !

Yukon-Forage

Permafrost extraction using the convenient portable drill

After 5 days of tussoks, of eating good dehydrated food (rice with pieces of chicken or rice with grilled chicken tonight?), of discovering  many answers but more questions, we left to civilization with 4 books well filled of field data that will reveal all their magic during the analysis process.

I think there is a fine line between a hard a memorable fieldtrip: but the immense beauty of the places, the adventure and especially the working team are usually putting the experience on the memorable side.

Thanks Fab, Lyna and Manu, anytime!

Yukon – Beaver Creek : Air ducts

April 21, 2015 in @en, focus-en

Author: Michel Sliger

By the chimney effect, the air ducts of the experimental section YG7 of Alaska Hwy have proven significantly efficient to preserve the underlying permafrost. One of these is now used to measure the heat flow between the circulating air and the embankment with a high precision. On the picture with me, Benoit Loranger from Pr. Guy Doré’s lab at Université Laval, and behind the camera, Kate Grandmont, from the Geocryolab (thanks for the pic by the way). Thanks to both of them who helped me this day (and many other on different times). The monitoring setup was restarted during Fall’14 for a second winter and records will be collected as soon as possible (Figure 1).

 

Figure 1 : Chimney instrumentation maintenance – Picture credits: Kate Grandmont

New publication

May 5, 2014 in Article, Paper

Eva Stephani and Daniel Fortier collaborated on a new paper recently published in the international journal Cold Regions Science and Technology. The paper is titled “A geosystems approach to permafrost investigations for engineering applications, an example from a road stabilization experiment, Beaver Creek, Yukon, Canada“.
For more information or to get a pdf copy of the paper, contact Eva! (evastephani@golder.com)

Permafrost uncovered in a planned windfarm in Yukon : implications for long term ground stability

December 21, 2012 in @en

Some members of the Geocryolab went last September in a fieldtrip of drilling and characterization of permafrost in Yukon (Burwash Landing and Destruction Bay), in partnership with theYukon College.A windfarm was expected to be built at this emplacement and an assessment of ground stability was required . Their work has been the subject of a report to the CBC.

 

http://www.cbc.ca/news/canada/north/story/2012/12/19/north-wind-farm-permafrost-yukon.html