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1	Lycksabäcken, ett riksintresse med komplext deglaciationsförlopp : Presentation av ett möjligt scenario över deglaciationen i området Hägglund, Tove January 2011 (has links) The area of Lycksabäcken northwest of Lycksele is a national interest of natural conservation because of its geological values with many unique landforms. Many of these landforms indicate that the deglaciation process in the area was very complex. However, the deglaciation process in the area has not previously been fully understood. The aim is to add to the knowledge of the events that took place during the last deglaciation. To do this, the glaciofluvial landforms in the area were mapped by studying aerial photographs with a Wild Aviopreter and a five-day field inventory of key areas for the interpretation. These landforms were then transferred to a map in ArcGIS in which scenarios of the deglaciation were constructed. The inversion from landform pattern to a scenario of the deglaciation was based on seven general assumptions and the attempt to create the least complex explanation of the origin of these landforms. The results show that the valley of Umeälven must have been blocked at least three times during the deglaciation in the area, which lead to a redirection of the meltwater flow into the area of Lycksabäcken. There, dead ice played a major role in the formation of the glaciofluvial landforms by damming lakes which enabled delta formation, the formation of many meltwater channels and a large sandur. During the field inventory a large amount of preglacially weathered rock surfaces was found in the area which would be interesting to investigate further. Deglaciation glacifluvala landformer sandur Lycksabäcken Norra Sverige
2	The role of ice blocks in the creation of distinctive proglacial landscapes during and following glacier outburst floods (jokulhlaups) Fay, Helen January 2001 (has links) The role of ice blocks in the creation of distinctive proglacial landscapes during and following glacier outburst floods (jökulhlaups) In recent years, it has been recognised that ice blocks form a major component of jökulhlaups. There are, however, very few published hypotheses of ice-block impact during and following jökulhlaups. The November 1996 jökulhlaup in southern Iceland, which transported ice blocks as large as 55 metres in diameter on to Skeioarärsandur, provided an opportunity to study ice-block impact produced during a high-magnitude flood. This thesis aims to (i) determine the impact of ice blocks on the morphology and sedimentology of proglacial river channels during and following a jökuihlaup, and (ii) provide a model which links distinctive landscapes created by ice blocks with specific controls on ice-block impact. A range of ice-block related features are produced during and following a jökulhlaup reflecting glacial and topographical constraints, ice-block characteristics and jökulhlaup hydraulics. In locations where sediment flux remains high throughout a flood, large ice blocks form kettle-scours. Rapid sediment deposition around ice blocks results in the formation and preservation of antidune stoss sides, entirely aggradational ice block obstacle shadows and hummocky topography. The grounding of ice blocks in flows of low sediment concentration or total exhumation of buried ice blocks results in the formation of classic U-shaped obstacle marks. Where channel geometry abruptly expands ice-block berms form. On outwash fans kettle holes and obstacle marks occur in distinct clusters. 11 Kettle holes form post-flood by the in situ melt of (1) progressively buried ice blocks and (2) small ice blocks incorporated into flow deposits. Ice block debris is superimposed onto obstacle marks and kettle holes and deposited on the post-flood streambed to form rimmed kettle holes and obstacle marks and ice-block till mounds respectively. Knowledge of associations between ice blocks and the bedforms and facies produced during and following a jökulhlaup will aid jökulhlaup identification and reconstruction in modern and ancient proglacial environments. 551.307094912
3	Der glazifluviale Formenschatz im Gletschervorfeld des Himalaya und der Versuch einer relativ-zeitlichen Einordnung / Glaciofluvial sequence of forms in the glacier foreland of the Himalayas and their chronological classification Tombrink, Gerrit 23 November 2017 (has links) No description available. 910 550 Himalaya Khumbu Himal Pangong Tso Nepal Indien Hochasien Glaziale Serie Glazifluviale Serie Gletscherschwankungen Fluvialgeomorphologie Hochgebirgsgeomorphologie Glaziologie Vergletscherung Historische Vergletscherungsstadien Rezente Gletscherschmelze Quartärforschung Holozän Klimawandel Flussformen Proglaziale Formen Gletschervorfeld Sander Himalaya Khumbu Himal Pangong Tso Nepal India High Asia Fluvial Geomorphology Glacial Geomorphology Glaciology Glaciation Glacier Historical Glacier Fluctuations Recent Glacier Melting Climate Change Quaternary Science Holocene River River forms Proglacial forms Glacier foreland Sandur Geographie (PPN621264008)

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