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TitleCold-climate aeolian environments
AuthorWolfe, S A
SourceAeolian geomorphology; Treatise on geomorphology vol. 11, 2013 p. 375-394, https://doi.org/10.1016/B978-0-12-374739-6.00312-2
Year2013
Alt SeriesEarth Sciences Sector, Contribution Series 20110116
PublisherElsevier
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf
ProvinceBritish Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon; Nunavut
NTS1; 2; 3; 10; 11; 12; 13; 14; 15; 16; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 52; 53; 54; 55; 56; 57; 58; 59; 62; 63; 64; 65; 66; 67; 68; 69; 72; 73; 74; 75; 76; 77; 78; 79; 82; 83; 84; 85; 86; 87; 88; 89; 92; 93; 94; 95; 96; 97; 98; 99; 102; 103; 104; 105; 106; 107; 114O; 114P; 115; 116; 117; 120; 340; 560
AreaCanada; United States
Lat/Long WENS-141.0000 -25.0000 90.0000 30.0000
Subjectssedimentology; environmental geology; eolian deposits; depositional environment; sedimentary environments; dunes; dunes, parabolic; loess; sands; cold regions research
Illustrationslocation maps; tables; photographs
AbstractCold-climate environments include periglacial environments where the mean annual air temperature is less than +3 °C and seasonally cold environments where the coldest mean monthly temperatures are below -3 °C. In these environments, temperature and moisture conditions significantly affect the efficacy of sediment transport by wind. Specific wind conditions operating in cold-climate environments that promote aeolian processes include frontal winds, pressure-gradient winds, katabatic winds, and foehn winds, as well as large-scale pressure gradient winds associated with persistent stationary high-pressure cells centered over ice sheets. Sediment source supply is a limiting factor in present-day cold-climate aeolian environments, particularly within formerly glaciated regions of North America and Europe. In addition, in cold-climate environments, even though the wind speed may be high, entrainment and transport of sediment may not occur because surface soil moisture and phase-state conditions, vegetation cover, or other factors including organic matter content or soluble salts limit the availability of sediment. Aeolian processes and features within cold-climate environments include deflation, loess and dust, sand dunes and sand sheets, as well as niveo-aeolian processes, sand wedges, ventifacts and oriented lakes. Four major settings where cold-climate aeolian processes occur include cold-polar environments, glacially proximal environments, cold high-altitude environments, and seasonally-cold environments. In addition, although contemporary cold-climate aeolian environments are largely restricted in extent, even at high latitudes, relict cold-climate aeolian environments were considerably more extensive during full glacial and early Holocene times.
GEOSCAN ID288952