Nonlinear thermal and moisture response of ice-wedge polygons to permafrost disturbance increases heterogeneity of high Arctic wetland [PDF]
Biogeosciences, 2016 Low-center polygonal terrains with gentle sloping surfaces and lowlands in the high Arctic have a potential to retain water in the lower central portion of ice-wedge polygons and are considered high-latitude wetlands.
E. Godin, D. Fortier, E. Lévesque
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A Model of Ice Wedge Polygon Drainage in Changing Arctic Terrain [PDF]
Water, 2020 As ice wedge degradation and the inundation of polygonal troughs become increasingly common processes across the Arctic, lateral export of water from polygonal soils may represent an important mechanism for the mobilization of dissolved organic carbon and other solutes. However, drainage from ice wedge polygons is poorly understood.
Vitaly A. Zlotnik +3 more
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Spatial variability of CO2 uptake in polygonal tundra: assessing low-frequency disturbances in eddy covariance flux estimates [PDF]
Biogeosciences, 2017 The large spatial variability in Arctic tundra complicates the representative assessment of CO2 budgets. Accurate measurements of these heterogeneous landscapes are, however, essential to understanding their vulnerability to climate change.
N. Pirk +9 more
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Thermo-erosion gullies boost the transition from wet to mesic tundra vegetation [PDF]
Biogeosciences, 2016 Continuous permafrost zones with well-developed polygonal ice-wedge networks are particularly vulnerable to climate change. Thermo-mechanical erosion can initiate the development of gullies that lead to substantial drainage of adjacent wet habitats.
N. Perreault +3 more
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Arctic Science, 2022 Environmental impact assessments for new Arctic infrastructure do not adequately consider the likely long-term cumulative effects of climate change and infrastructure to landforms and vegetation in areas with ice-rich permafrost, due in part to lack of ...
Donald A. Walker +18 more
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High potential for loss of permafrost landforms in a changing climate
Environmental Research Letters, 2020 The presence of ground ice in Arctic soils exerts a major effect on permafrost hydrology and ecology, and factors prominently into geomorphic landform development.
Olli Karjalainen +7 more
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Remote Sensing, 2021 Very high spatial resolution commercial satellite imagery can inform observation, mapping, and documentation of micro-topographic transitions across large tundra regions.
Chandi Witharana +10 more
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COUNTING ICE-WEDGE POLYGONS FROM SPACE: USE OF COMMERCIAL SATELLITE IMAGERY TO MONITOR CHANGING ARCTIC POLYGONAL TUNDRA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021 The microtopography associated with ice wedge polygons (IWPs) governs the Arctic ecosystem from local to regional scales due to the impacts on the flow and storage of water and therefore, vegetation and carbon.
A. Hasan +3 more
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Brief communication: Rapid machine-learning-based extraction and measurement of ice wedge polygons in high-resolution digital elevation models [PDF]
The Cryosphere, 2019 We present a workflow for the rapid delineation and microtopographic characterization of ice wedge polygons within high-resolution digital elevation models.
C. J. Abolt +4 more
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Remote Sensing, 2023 As one of the best indicators of the periglacial environment, ice-wedge polygons (IWPs) are important for arctic landscapes, hydrology, engineering, and ecosystems.
Wenhui Wang +14 more
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