Affiliation:
1. Nicolaus Copernicus University , Poland
2. University of Warsaw , Poland
Abstract
Abstract
The development and evolution of confined outwash fans in high Arctic regions depend on the rate of meltwater discharge, which is directly related to the glacier ablation rate, in turnassociated with climate conditions. Other factors controlling outwash fan morphology (e.g. depth and width of distributive channels) are processes of fluvial erosion, and the transport and deposition of sediments. These factors have not previously been considered together in relation to the evolution of the confined outwash fans which are commonly incised into the top of permafrost in the forefields of subpolar glaciers and in mountains in high Arctic regions. Morphology and surficial sediments of a confined outwash fan of the Waldemar River (NW Spitsbergen, Svalbard) were analysed on the basis of geomorphological and sedimentological studies. The results of our investigations show multiple relations between the depth and width of distributary channels, fan slope and textural features of glaciofluvial surficial sediments supplied into the fluvial system from the glacier and from lateral fluvial erosion of permafrost
Subject
Geophysics,Geography, Planning and Development
Reference48 articles.
1. AL-FARRAJ, A., HARVEY, A.M., 2005, Morphometry and depositional style of Late Pleistocene alluvial fans: Wadi Al-Bih, northern UAE and Oman. [in:] Harvey, A.M., Mather, A.E., and Stokes, M. (Eds), Alluvial fans: geomorphology, sedimentology, dynamics: Geological Society Special Publication 251: London, The Geological Society of London: 85–94.
2. BUFFINGTON, J.M., MONTGOMERY D.R., 1999, Effect of hydraulic roughness on surface textures of gravel-bed rivers. Water Resources Research, 35(11): 3507–3521.
3. BUFFINGTON, J.M., MONTGOMERY, D.R., GREENBERG, H.M., 2004, Basinscale availability of salmonid spawning gravel as influenced by channel type and hydraulic roughness in mountain catchments. Canadian Journal of Fisheries and Aquatic Sciences, 61(11): 2085–2096.10.1139/f04-141
4. DALLMANN W.K, ANDRESEN A., BERGH S., MAHER H.D., JR, OHTA Y., 1993, Tertiary fold-and-thrust belt of Spitsbergen, Svalbard. Norsk Polarinstitutt, Meddelelser, 128.
5. FERGUSON, R.I., 2003, Emergence of abrupt gravel to sand transitions along rivers through sorting processes. Geology, 31(2): 159–162.10.1130/0091-7613(2003)031<0159:EOAGTS>2.0.CO;2
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