2020
DOI: 10.1007/s10040-020-02110-4
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Groundwater dynamics within a watershed in the discontinuous permafrost zone near Umiujaq (Nunavik, Canada)

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Cited by 32 publications
(43 citation statements)
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“…Location of the five study sites in the Tasiapik Valley, near Umiujaq, Quebec, Canada. Instruments were installed beneath five different types of land cover: lichens and herbs (LH), lichens and low shrubs (LLS), medium shrubs (MS), trees (T), and permafrost (P) (after Fortier et al, 2020; Lemieux et al, 2020). …”
Section: Methodsmentioning
confidence: 99%
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“…Location of the five study sites in the Tasiapik Valley, near Umiujaq, Quebec, Canada. Instruments were installed beneath five different types of land cover: lichens and herbs (LH), lichens and low shrubs (LLS), medium shrubs (MS), trees (T), and permafrost (P) (after Fortier et al, 2020; Lemieux et al, 2020). …”
Section: Methodsmentioning
confidence: 99%
“…The superficial aquifer of the study site is located above an aquitard made of frost‐susceptible silts, which have been invaded by discontinuous permafrost. A detailed description of the hydrogeology of the valley can be found in Lemieux et al (2020).…”
Section: Methodsmentioning
confidence: 99%
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“…These dynamic groundwater flow systems can sustain perennial flow networks between aquifers and surface water bodies through unfrozen pathways (Devoie, Craig, Connon, & Quinton, 2019; Jepsen, Voss, Walvoord, Minsley, & Rover, 2013; Walvoord & Kurylyk, 2016) (Figure 1c,d). However, the overall effect of permafrost thaw on groundwater flow systems, and more particularly on groundwater–surface water interactions, remains unknown, with studies suggesting that these interactions can be highly variable and dependent on the physical setting (Lemieux et al, 2020; McKenzie et al, 2020; Walvoord & Kurylyk, 2016). For example, the impact of permafrost thaw on northern groundwater resources is mixed—some communities will suffer from a loss of surface water availability due to permafrost thaw (e.g., Smith, Sheng, MacDonald, & Hinzman, 2005; White, Gerlach, Loring, Tidwell, & Chambers, 2007), while others may benefit as newly formed aquifers created by permafrost thaw can provide critical drinking water resources (Lemieux et al, 2016).…”
Section: Introductionmentioning
confidence: 99%
“…Hydrologic and hydrogeologic regime shifts may occur following the formation of perennially unfrozen zones (taliks) that lie horizontally above the permafrost table and allow for groundwater flow and transport even during the winter months (Lamontagne-Hallé et al, 2018;Devoie et al, 2019;Walvoord et al, 2019). These changes not only increase the available storage and flux of liquid groundwater, but also enhance the potential for exchange of water between aquifers and surface water bodies (blue lines, Figure 1; Evans et al, 2020;Lemieux et al, 2020) and lead to shifts in vegetation (Christensen et al, 2004).…”
Section: Altered Surface Hydrologymentioning
confidence: 99%