Palaeoglaciology of the Weichselian Odra ice lobe, NE Germany and NW Poland

• Autorzy: Hermanowski P.
• Języki publikacji: EN

Abstrakty

EN

Southern part of the Scandinavian Ice Sheet terminated in large lobes projecting tens of kilometres beyond the main ice sheet margin. One of the main ice lobe was the Odra lobe localized in NE Germany and NW Poland. In this study concise description of current morphology of the Odra lobe area is given with special reference to subglacial hydraulic conditions during the ice sheet advance. Subglacial conditions were simulated by using time-dependant three-dimensional numerical model, and obtained results were compared to geological observations. The results show entire groundwater system alternation that affected the ice/bed coupling and influenced formation of specific subglacial landforms. Coupling the simulation results with empirical estimates of basal melting rate suggests that only a small fraction of basal meltwater could have drained to the ice forefield as groundwater. Adverse slope of the low-permeable ice bed hampered water drainage, and led to water accumulation at the ice/bed interface that in turn facilitated basal sliding and bed deformation.

Słowa kluczowe

EN

subglacial drainage; subglacial landforms; Odra lobe; Weichselian glaciation; ice movement dynamics

• Wydawca: Stowarzyszenie Geomorfologów Polskich
• Czasopismo: Landform Analysis
• Rocznik: 2010
• Tom: Vol. 14
• Strony: 12--24
• Opis fizyczny: Bibliogr. 81 poz., rys.

Twórcy

autor

Hermanowski P.

• Adam Mickiewicz University, Faculty of Geographical and Geological Sciences, Institute of Geology, Maków Polnych 16, PL-61-606 Poznań, Poland,

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