Michel Paquette, back from Cape Bounty

September 7, 2015 in post

Geocryolab has now set foot on the western Canadian High Arctic! Back from Cape Bounty Arctic Watershed Observatory, on Melville Island, Michel Paquette just inaugurated the collaborative effort between host researchers from Queen’s University and the Geocryolab. The short stay allowed the discovery of an at least 2m thick layer of buried massive ice near the top of permafrost under one of the most studied sub-watershed of the research site. Geocryolab will analyze more than 4m of frozen permafrost cores retrieved from the coring sites, with crystallographic, cryostratigraphic and ice content related analysis. The FaBRECC laboratory will analyse isotopic composition, geochemistry and nutrient chemistry in the frozen soil, and we hope that our complementary expertise will lead to a greater understanding of mass transfer through near-surface water movement, and of permafrost-related disturbances affecting the evolution of the watershed and its hydrology. A big thank you to Prof. Scott Lamoureux, Prof. Melissa Lafrenière and the Cape Bounty research team for their great hospitality!

Michel Paquette - Melville 2015

Michel Paquette – Melville 2015

After Ward Hunt Island, Melville Island

July 29, 2015 in post

As they return from Ward Hunt Island, the Geocryolab team of Daniel Fortier, Gautier Davesne and Michel Paquette will split up. While the rest of the team will head back south with the precious samples collected on Ward Hunt, Michel will keep going for a few more weeks, heading west to Melville Island (Figure 1) on a new collaborative project between the Geocryolab and Scott Lamoureux’s Cape Bounty Arctic Watershed Observatory (CBAWO – Queen’s University). Along with Ashely Rudy (PhD candidate), Michel will use the lab’s Ground Penetrating Radar and core sampling drill to identify zones of high ice content, which are causing large disturbances on the slopes. At thaw, the melting of ice-rich layers causes soil liquefaction and slope failures, occuring as active-layer detachments slides. These landslides modify the hydrographic network and sedimentary transport in rivers, and could change the water quality in rivers and in the lakes in the area.

 

 

668px-Melville_Island.svg

Figure 1: Study site at Melville Island in the Arctic archipelago