Subglacial swamps
نویسندگان
چکیده
منابع مشابه
Subglacial swamps
The existence of both water and sediment at the bed of ice streams is well documented, but there is a lack of fundamental understanding about the mechanisms of ice, water and sediment interaction. We pose a model to describe subglacial water flow below ice sheets, in the presence of a deformable sediment layer. Water flows in a rough-bedded film; the ice is supported by larger clasts, but there...
متن کاملAesthetics in the swamps.
Next began the muskegs, which almost entirely stood under water; these we had to cross for miles; think with what misery, every step up to our knees. . . . The whole of this land of the Lapps was mostly muskeg, here called stygx. A priest could never so describe hell, because it is no more horrible. Never have poets been able to picture the Styx so foul, since that is no fouler.—CAROLUS LINNAEU...
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This was a study of subglacial deformation till genesis from a modern temperate glacier, at Sk alafellsj€ okull, Iceland. Detailed microscale properties of till samples (from Scanning Electron Microscope [SEM] and thin section analysis) were examined from a glacial site with in situ subglacial process monitoring and an exposed subglacial surface in the foreland. Two lithofacies were examined, a...
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We address the problem of quickly finding shortest paths in known graphs. We propose a method that relies on identifying areas that tend to be searched needlessly (areas we call swamps), and exploits this knowledge to improve search. The method requires relatively little memory, and reduces search cost drastically, while still finding optimal paths. Our method is independent of the heuristics u...
متن کاملDynamics of subglacial floods
The Nye model of jökulhlaups is able to explain both their periodicity and even the detailed shape of the flood hydrograph. In this paper, we show how the model can be used to predict the shape of the hydrographs from the subglacial lake Grı́msvötn beneath Vatnajökull in Iceland, and we comment on three particular issues that have proved contentious in the application of the Nye model: the role ...
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ژورنال
عنوان ژورنال: Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
سال: 2014
ISSN: 1364-5021,1471-2946
DOI: 10.1098/rspa.2014.0340