Mass movement by solifluction and syngenetic dynamic of permafrost in the High Arctic, Canadian High Arctic

Hypothesis: 1) The deepening of the active layer, in response to climate changes, accentuate mass movements by solifluction; 2) Solifluction lobes' movement lead to the development of a syngenetic permafrost and aggradational ice downslope; 3) Because of the important effect of latent heat represented by the ice volume, this ice-rich zone would contribute to slow down permafrost thaw in response to climates changes. Objectives: 1) Characterize solifluction lobes cryostratigraphy; 2) Determine if the mass movement of sediments induces ice aggradation and syngenetic development of permafrost downslope. Methodology : 1) The solifluction lobes cryostratigraphy is examined with permafrost cores and with ground penetrating radar surveys; 2) The different components of permafrost (sediments, ice, organic matter and gas) are determined by computer assisted tomography (INRS-ÉTÉ); 3) The geotechnical properties (grain size, Atterberg limit, thaw settlement, porosity, hydraulic conductivity and shear strength) of permafrost are measured in laboratory; 4) To draw a profile of the solifluction lobes and to calculate their volume, a 3D scanning and a topographic survey has been done with a Trimble VX total station.

Identifier
Source https://www.polardata.ca/pdcsearch/PDCSearchDOI.jsp?doi_id=11915
Metadata Access http://www.polardata.ca/oai/provider?verb=GetRecord&metadataPrefix=fgdc&identifier=11915_fgdc
Provenance
Creator Daniel Fortier; Manuel Verpaelst
Publisher Canadian Cryospheric Information Network
Contributor Polar Data Catalogue
Publication Year 2014
Rights Research programs, CCIN, or ArcticNet take no liability for the use or transmission of this data
OpenAccess true
Contact daniel.fortier(at)umontreal.ca; pdc(at)uwaterloo.ca
Representation
Language English
Format Computer file
Discipline Environmental Research
Spatial Coverage (-74.000W, 83.000S, -74.000E, 83.000N)
Temporal Coverage Begin 2013-06-01T00:00:00Z
Temporal Coverage End 2013-07-27T00:00:00Z