Overland Transport of Sediment by Rill Water in a Periglacial Environment in the Canadian High Arctic

Wilkinson, T. J.; Bunting, B. T.

doi:10.1080/04353676.1975.11879908

Cited by 26 publications

(20 citation statements)

References 7 publications

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“…Similar features are sometimes described as 'rills' in western literature (e.g. Wilkinson and Bunting, 1975;Lewkowicz and Kokelj, 2002); -The sedimentary cover over the lower and central valley bottom is usually not very thick (between 0-5 m), in contrast to sediment thickness on some slopes in the upper valley (30 m in borehole X-89). The wet tundra in the broad central valley is dominated by a large dell system with partially braided surface runoff.…”

Section: Eastern Bykovsky Peninsulamentioning

confidence: 91%

Geological and geomorphological evolution of a sedimentary periglacial landscape in Northeast Siberia during the Late Quaternary

et al. 2007

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A wide variety of environmental records is necessary for analysing and understanding the complex Late Quaternary dynamics of permafrost-dominated Arctic landscapes. A NE Siberian periglacial key region was studied in detail using sediment records, remote sensing data, and terrain modelling, all incorporated in a geographical information system (GIS). The study area consists of the Bykovsky Peninsula and the adjacent Khorogor Valley in the Kharaulakh Ridge situated a few kilometres southeast of the Lena Delta. In this study a comprehensive cryolithological database containing information from 176 sites was compiled. The information from these sites is based on the review of previously published borehole data, outcrop profiles, surface samples, and our own field data. These archives cover depositional records of three periods: from Pliocene to Early Pleistocene, the Late Pleistocene and the Holocene. The main sediment sequences on the Bykovsky Peninsula consist of up to 50 m thick ice-rich permafrost deposits (Ice Complex) that were accumulated during the Late Pleistocene. They were formed as a result of nival processes around extensive snowfields in the Kharaulakh Ridge, slope processes in these mountains (such as in the Khorogor Valley), and alluvial/proluvial sedimentation in a flat accumulation plain dominated by polygonal tundra in the mountain foreland (Bykovsky Peninsula). During the early to middle Holocene warming, a general landscape transformation occurred from an extensive Late Pleistocene accumulation plain to a strongly thermokarst-dominated relief dissected by numerous depressions. Thermokarst subsidence had an enormous influence on the periglacial hydrological patterns, the sediment deposition, and on the composition and distribution of habitats. Climate deterioration, lake drainage, and talik refreezing occurred during the middle to late Holocene. The investigated region was reached by the post-glacial sea level rise during the middle Holocene, triggering thermo-abrasion of ice-rich coasts and the marine inundation of thermokarst depressions.

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Section: Eastern Bykovsky Peninsulamentioning

confidence: 91%

Geological and geomorphological evolution of a sedimentary periglacial landscape in Northeast Siberia during the Late Quaternary

et al. 2007

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“…When the watertable rises above the ground surface, both overland flow and flow channelled in rills are generated (Woo and Steer, 1982). This is particularly prominent in spring because a frozen substrate close to the ground surface hinders percolation at a time when water supply is abundant (Lewkowicz and French, 1982a;Wilkinson and Bunting, 1975;Woo, 1976). Before runoff is generated, however, depression storage has to be satisfied.…”

Section: A Surface Flowmentioning

confidence: 99%

Permafrost hydrology in North America¹

1986

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“…This proposed revision in process interpretation from gelifluction to nival runoff as the main transport process in the immediate pronival zone does not, however, modify previous interpretations of enhanced nival activity in the area during Holocene cooling episodes (Payette et al, 1985a;Morin and Payette, 1988;Lamoureux, 1992). Indeed, both processes are enhanced below late-lying snowpatches (Wilkinson and Bunting, 1975;Thorn, 1976).…”

Section: Alluvial Fan Activity and Holocene Climatic Variationsmentioning

confidence: 97%

Impacts of Holocene climatic variations on alluvial fan activity below snowpatches in subarctic Québec

2006

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Overland Transport of Sediment by Rill Water in a Periglacial Environment in the Canadian High Arctic

Cited by 26 publications

References 7 publications

Geological and geomorphological evolution of a sedimentary periglacial landscape in Northeast Siberia during the Late Quaternary

Geological and geomorphological evolution of a sedimentary periglacial landscape in Northeast Siberia during the Late Quaternary

Permafrost hydrology in North America¹

Impacts of Holocene climatic variations on alluvial fan activity below snowpatches in subarctic Québec

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Overland Transport of Sediment by Rill Water in a Periglacial Environment in the Canadian High Arctic

Cited by 26 publications

References 7 publications

Geological and geomorphological evolution of a sedimentary periglacial landscape in Northeast Siberia during the Late Quaternary

Geological and geomorphological evolution of a sedimentary periglacial landscape in Northeast Siberia during the Late Quaternary

Permafrost hydrology in North America1

Impacts of Holocene climatic variations on alluvial fan activity below snowpatches in subarctic Québec

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Product

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Permafrost hydrology in North America¹