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Ice wedges and related structures [PDF]
Ice wedges are steeply to vertically laminated bodies of ice that form by repeated infilling of thermal contraction cracks in permafrost. Soil wedges form where the cracks fill with soil, and composite wedgesform where they fill with mixtures of soil and
Julian Murton (4460746)
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Palaeoclimate reconstruction on Big Lyakhovsky Island, north Siberia?hydrogen and oxygen isotopes in ice wedges [PDF]
Permafrost and Periglacial Processes, 2002 Late Quaternary permafrost deposits on Big Lyakhovsky Island (New Siberian Islands, Russian Arctic) were studied with the aim of reconstructing the palaeoclimatic and palaeoenvironmental conditions of northern Siberia.
Lutz Schirrmeister, Hanno Meyer
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Life at the Wedge: the Activity and Diversity of Arctic Ice Wedge Microbial Communities
Astrobiology, 2012The discovery of polygonal terrain on Mars underlain by ice heightens interest in the possibility that this water-bearing habitat may be, or may have been, a suitable habitat for extant life. The possibility is supported by the recurring detection of terrestrial microorganisms in subsurface ice environments, such as ice wedges found beneath tundra ...
Wilhelm, Roland C. +4 more
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Modelling of ice‐wedge networks
Permafrost and Periglacial Processes, 2008AbstractThe fundamental and dominant process operating in all ice‐wedge networks is thermal contraction fracturing. This assumption forms the basis of a numerical model combining fracture initiation and propagation in frozen ground and ice, influence of open fractures on stresses, growth of ice wedges and ground deformation above wedges (Plug and ...
L. J. Plug, B. T. Werner
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Ice wedges in south-eastern Finland
Geologiska Föreningen i Stockholm Förhandlingar, 1968Abstract Ice wedge casts, the biggest 1.5 m deep, were found in stratified sand and gravel in sections in the Salpausselka I end-moraine in eastern Finland. Their distribution suggests that they were formed in the end of the Late Weichselian Younger Dryas period and possibly in early Flandrian time, which agrees with the dating of the youngest ice ...
J. J. Donner, V. Lappalainen, R. G. West
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Ice wedges of the Dalton Highway, Alaska
Quarterly Journal of Engineering Geology and Hydrogeology, 2001North America’s largest oilfield was discovered in 1968 at Prudhoe Bay; it contained over ten billion barrels of recoverable oil about 3000 m beneath the Arctic Coastal Plain. Its development changed Alaska’s economy for ever, and included building the oil pipeline from Prudhoe Bay to Valdez.
TONY WALTHAM, PETER FOOKES
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Fossil ice‐wedge at Poltalloch
Scottish Geographical Magazine, 1961(1961). Fossil ice‐wedge at Poltalloch. Scottish Geographical Magazine: Vol. 77, No. 2, pp. 88-88.
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Geografisk Tidsskrift-Danish Journal of Geography, 1976
Svensson, Harald, 1976; Relict ice-wedge polygons revealed on aerial photographs from Kaltenkirchen, northern Germany. Geografisk Tidsskrift 75: 8–12. Kobenhavn, juni 1, 1976. On aerial photographs polygonal patterns are detected in cultivated fields due to vegetational contrasts.
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Svensson, Harald, 1976; Relict ice-wedge polygons revealed on aerial photographs from Kaltenkirchen, northern Germany. Geografisk Tidsskrift 75: 8–12. Kobenhavn, juni 1, 1976. On aerial photographs polygonal patterns are detected in cultivated fields due to vegetational contrasts.
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Involutions and Ice-Wedges in Devon
Nature, 1961RELICT periglacial phenomena have been recorded from south-west England for more than two hundred years. Reference has been made to head, clitter, rubble drift, loessic deposits and other manifestations of mechanical rock-weathering and ablation of debris under sub-arctic conditions1, to geomorphological features which resemble actively developing ...
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The ecology of decaying ice wedges
2016En raison du changement climatique, le haut Arctique canadien connaît une des plus fortes augmentations de températures atmosphériques de la planète. Le pergélisol, sol qui demeure égale ou inférieure à 0 ° C pendant au moins deux années consécutives, est un phénomène cryospheric dont l'équilibre thermique fluctue en fonction des changements de ...
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