Climatic, geomorphologic and hydrologic perturbations as drivers for mid- to late Holocene development of ice-wedge polygons in the western Canadian Arctic. [PDF]
Permafr Periglac Process, 2018 Ice‐wedge polygons are widespread periglacial features and influence landscape hydrology and carbon storage. The influence of climate and topography on polygon development is not entirely clear, however, giving high uncertainties to projections of ...
Wolter J +4 more
europepmc +2 more sources
POSSIBLE ICE-WEDGE POLYGONS IN UTOPIA PLANITIA, MARS, AND THEIR POLEWARD LATITUDINAL GRADIENT
, 2019 Introduction: Here, we describe and evaluate: a) the presence and distribution in Utopia Planitia (UP), Mars (40-50 o N, 110-124 o E), of small-sized polygons , (10-25 m in diameter), with low centres (lcps) or high centres (hcps) relative to their margins; b) the spatial , perhaps periglacial, association of these polygons and thermokarst-like ...
Soare, R.J. +5 more
core +5 more sources
Effects of multi-scale heterogeneity on the simulated evolution of ice-rich permafrost lowlands under a warming climate [PDF]
The Cryosphere, 2021 In continuous permafrost lowlands, thawing of ice-rich deposits and melting of massive ground ice lead to abrupt landscape changes called thermokarst, which have widespread consequences on the thermal, hydrological, and biogeochemical state of the ...
J. Nitzbon +10 more
doaj +1 more source
Understanding the relative importance of vertical and horizontal flow in ice-wedge polygons [PDF]
Hydrology and Earth System Sciences, 2020 Ice-wedge polygons are common Arctic landforms. The future of these landforms in a warming climate depends on the bidirectional feedback between the rate of ice-wedge degradation and changes in hydrological characteristics.
N. A. Wales +9 more
doaj +1 more source
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
openaire +1 more source
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
doaj +1 more source
Isotopic composition of oxygen (δ18О) and hydrogen (δD) of ice-wedge ice in central Yamal Peninsula
, 2021 A new data on the isotope composition of oxygen (δ18О) and hydrogen (δD) of the ice-wedge ice in central Yamal Peninsula near Bovanenkovo gas field are presented.
Babkin, Evgeniy +2 more
core +1 more source
Geophysical Monograph Series, Page 153-168., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Yuem Park +3 more
wiley +1 more source
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
doaj +1 more source
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
doaj +1 more source