Reference : Direct measurement of groundwater flux in aquifers within the discontinuous permafro...
Scientific journals : Article
Engineering, computing & technology : Geological, petroleum & mining engineering
http://hdl.handle.net/2268/233590
Direct measurement of groundwater flux in aquifers within the discontinuous permafrost zone: an application of the finite volume point dilution method near Umiujaq (Nunavik, Canada)
English
Jamin, Pierre mailto [Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement >]
Cochand, Marion mailto [Univeristé Laval > Department of Geology and Geological Engineering > > >]
Dagenais, Sophie mailto [Université Laval > Department of Geology and Geological Engineering > > >]
Lemieux, Jean-Michel mailto [Université Laval > Department of Geology and Geological Engineering > > >]
Fortier, Richard mailto [Université Laval > Department of Geology and Geological Engineering > > >]
Molson, John mailto [Université Laval > Department of Geology and Geological Engineering > > >]
Brouyère, Serge mailto [Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement >]
In press
Hydrogeology Journal
Springer
Topical Collection "Hydrogeology of a cold-region watershed near Umiujaq (Nunavik, Canada)"
Yes (verified by ORBi)
1431-2174
Germany
[en] Finite Volume Point Dilution Method ; Tracer test ; Groundwater flow ; Permafrost ; Canada
[en] Permafrost thaw is a complex process resulting from interactions between the atmosphere, soil, water and vegetation. Although advective heat transport by groundwater at depth likely plays a significant role in permafrost dynamics at many sites, there is lack of direct measurements of groundwater flow patterns and fluxes in such cold-region environments. Here, the finite volume point dilution method (FVPDM) is used to measure in-situ groundwater fluxes in two sandy aquifers in the discontinuous permafrost zone, within a small watershed near Umiujaq, Nunavik (Quebec), Canada. The FVPDM theory is first reviewed, then results from four FVPDM tests are presented: one test in a shallow supra-permafrost aquifer, and three in a deeper sub-permafrost aquifer. Apparent Darcy fluxes derived from the FVPDM tests varied from 0.5×10-5 to 1.0×10-5 m/s, implying that advective heat transport from groundwater flow could be contributing to rapid permafrost thaw at this site. In providing estimates of the Darcy fluxes at the local scale of the well screens, the approach offers more accurate and direct measurements over indirect estimates using Darcy’s law. The tests show that this method can be successfully used in remote areas and with limited resources. Recommendations for optimizing the test protocol are proposed.
Université de Liège FSRC-12/81 ; Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS 1.5060.12 ; Fondation Roi Baudouin, Prix Ernst Dubois 2015-F2812650-204355 ; Natural Sciences and Engineering Research Council of Canada (NSERC) through the Strategic Project Grant program ; Centre d’études nordiques (CEN) at Université Laval
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/233590

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
Jamin_P-Direct measurement of groundwater flux in aquifers within the discontinuous permafrost zone.pdfAuthor preprint2.6 MBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.