Microtopographic control on the ground thermal regime in ice wedge polygons [PDF]
The Cryosphere, 2018 The goal of this research is to constrain the influence of ice wedge polygon microtopography on near-surface ground temperatures. Ice wedge polygon microtopography is prone to rapid deformation in a changing climate, and cracking in the ice wedge ...
C. J. Abolt +4 more
doaj +6 more sources
Monitoring Arctic permafrost – examining the contribution of volunteered geographic information to mapping ice-wedge polygons [PDF]
The CryosphereThis study evaluates the potential of Volunteered Geographic Information (VGI) for mapping and monitoring ice-wedge polygons in Arctic permafrost regions through two case studies in Alaska and Canada.
P. Walz +11 more
doaj +10 more sources
Pathways of ice-wedge degradation in polygonal tundra under different hydrological conditions [PDF]
The Cryosphere, 2019 Ice-wedge polygons are common features of lowland tundra in the continuous permafrost zone and prone to rapid degradation through melting of ground ice.
J. Nitzbon +9 more
doaj +12 more sources
Late Holocene ice-wedge polygon dynamics in northeastern Siberian coastal lowlands [PDF]
Arctic, Antarctic, and Alpine Research, 2018 Ice-wedge polygons are common features of northeastern Siberian lowland periglacial tundra landscapes. To deduce the formation and alternation of ice-wedge polygons in the Kolyma Delta and in the Indigirka Lowland, we studied shallow cores, up to 1.3 m ...
Lutz Schirrmeister +6 more
doaj +6 more sources
Thermokarst Development Detected from High-Definition Topographic Data in Central Yakutia [PDF]
Remote Sensing, 2018 Eastern Siberia is characterized by widespread permafrost thawing and subsequent thermokarst development. Estimation of the impacts of the predicted rise in precipitation and air temperatures under climate change requires quantitative knowledge about the
Hitoshi Saito +4 more
doaj +11 more sources
Degradation of ice-wedge polygons leads to increased fluxes of water and DOC
Science of The Total Environment, 2023 Ice-wedge polygon landscapes make up a substantial part of high-latitude permafrost landscapes. The hydrological conditions shape how these landscapes store and release organic carbon. However, their coupled water‑carbon dynamics are poorly understood as field measurements are sparse in smaller catchments and coupled hydrology-dissolved organic carbon (
Speetjens, Niek Jesse +3 more
openaire +4 more sources
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
doaj +3 more sources
A Quantitative Graph-Based Approach to Monitoring Ice-Wedge Trough Dynamics in Polygonal Permafrost Landscapes [PDF]
Remote Sensing, 2021 In response to increasing Arctic temperatures, ice-rich permafrost landscapes are undergoing rapid changes. In permafrost lowlands, polygonal ice wedges are especially prone to degradation.
Tabea Rettelbach +6 more
doaj +4 more sources
The importance of freeze–thaw cycles for lateral tracer transport in ice-wedge polygons [PDF]
The Cryosphere, 2022 A significant portion of the Arctic coastal plain is classified as polygonal tundra and plays a vital role in soil carbon cycling. Recent research suggests that lateral transport of dissolved carbon could exceed vertical carbon releases to the atmosphere.
E. E. Jafarov +6 more
doaj +3 more sources
Late Wisconsinan Ice-Wedge Polygons near Kitchener, Ontario, Canada
Canadian Journal of Earth Sciences, 1972 Reconnaissance from a light aircraft has revealed areas of polygonal ground east of Kitchener, Ontario. Examination of aerial photographs of the same region has shown additional polygons all developed upon Port Stanley II Till. Trenching of a polygon has exposed wedge-shaped sand and gravel infilled structures interpreted as ice-wedge casts.
Alan V. Morgan
openaire +2 more sources