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Browsing Centre for Glaciology by Issue Date

Now showing items 21-40 of 218

Parameter sensitivity in simulations of snowmelt

Etchevers, Pierre; Essery, Richard (2004)

A simple snow model with only three parameters (fresh snow albedo, albedo decay rate for melting snow and surface roughness) is used to simulate snow accumulation and melt at four sites in Europe and North America, and the ...
Vegetation and Topographic Control of Wind-blown Snow Distributions in Distributed and Aggregated Simulations for an Arctic Tundra Basin

Essery, Richard; Pomeroy, John W. (2004)

A fine-scale model of blowing snow is used to simulate the characteristics of snowcover in a low-Arctic catchment with moderate topography and partial shrub cover. The influence of changing shrub characteristics is ...
Topographic controls on post-Oligocene changes in ice-sheet dynamics, Prydz Bay region, East Antarctica

Taylor, J.; Siegert, M. J.; Payne, A. J.; Hambrey, Michael J.; O'Brien, P. E.; Cooper, A. K.; Leitchenkov, G. (2004)

Within the general trend of post-Eocene cooling, the largest and oldest outlet of the East Antarctic Ice Sheet underwent a change from ice-cliff to ice-stream and/or ice-shelf dynamics, with an associated switch from ...
Glacial erosional landforms: origins and significance for palaeoglaciology

Bennett, M. R.; Glasser, Neil F. (2004)

Glacial inversion modelling of continental-scale palaeo-ice sheets is now recognized as an important tool in palaeoglaciology. Existing palaeoglaciological reconstructions of the dimensions, geometry and dynamics of former ...
A sedimentological and isotopic study of the origin of supraglacial debris bands: Kongsfjorden, Svalbard

Hubbard, Bryn; Glasser, Neil F.; Hambrey, Michael J.; Etienne, James L. (2004-03-01)

Debris bands associated with supraglacial moraines and associated basal deposits have been logged and sampled for their ice and debris at three glaciers in north-west Spitsbergen, Svalbard. Physical properties, including ...
Evidence for subglacial ponding across Taylor Glacier, Dry Valleys, Antarctica

Hubbard, Alun L.; Lawson, Wendy; Anderson, B.; Hubbard, Bryn; Blatter, Heinz (2004-06)

Ice-penetrating radar and modelling data are presented suggesting the presence of a zone of temperate ice, water ponding or saturated sediment beneath the tongue of Taylor Glacier, Dry Valleys, Antarctica. The proposed ...
Late Pleistocene and Holocene palaeoclimate and glacier fluctuations in Patagonia

Glasser, Neil F.; Harrison, Stephan; Aniya, M.; Winchester, Vanessa (2004-08)

This paper presents the evidence for Late Pleistocene and Holocene palaeoclimate and glacier fluctuations of the two major icefields in Patagonia, the Hielo Patagónico Norte (47°00′S, 73°39′W) and the Hielo Patagónico Sur ...
Dye tracing experiments at Midtre Lovénbreen Svalbard: preliminary results and interpretations

Irvine-Fynn, Tristram David; Hodson, A. J.; Kohler, J.; Porter, P. R.; Vatne, Geir (Institute of Geography of the Russian Academy of Sciences, 2005)
Palaeoglaciology of the Welsh sector of the British–Irish Ice Sheet

Glasser, Neil F.; Jansson, Krister N. (2005)

This palaeoglaciological reconstruction, based on the distribution of glacial lineations interpreted from satellite imagery, considers the extent, thickness and dynamics of the Welsh Ice Cap and its interaction with the ...
A modelling reconstruction of the Last Glacial Maximum Ice Sheet and its deglaciation in the vicinity of the Northern Patagonian Icefield, South America

Hulton, N. R. J.; Hein, Andrew S.; Kaplan, Michael R.; Hubbard, Alun L. (2005)

ABSTRACT. A time-dependent model is used to investigate the interaction between climate, extent and fluctuations of Patagonian ice sheet between 45° and 48°S during the last glacial maximum (LGM) and its subsequent ...
Using Landsat 7 ETM+ imagery and Digital Terrain Models for mapping glacial lineaments on former ice sheet beds

Glasser, Neil F.; Jansson, Krister N. (2005)

In this paper, we consider the application of Landsat 7 ETM+ imagery and Digital Terrain Models (DTM) for mapping glacial lineaments in a formerly glaciated area of Wales. A series of landform interpretation experiments ...
Fast-flowing outlet glaciers of the Last Glacial Maximum Patagonian Icefield

Glasser, Neil F.; Jansson, Krister N. (Elsevier, 2005)

Glacial geomorphology around the Northern Patagonian Icefield indicates that a number of fast-flowing outlet glaciers (the continuation of ice streams further upglacier) drained the icefield during the Last Glacial Maximum. ...
Optical remote sensing techniques in high-mountatin environments: application to glacial hazards

Lucas, Richard M.; Richardson, S. D.; Quincey, Duncan J.; Glasser, Neil F. (2005)

Remote sensing studies have shown that glaciers and their proximal environments exhibit unique temporal, spatial and spectral characteristics that can be analysed to better quantify glacial hazard potential. In this review, ...
Structure and changing dynamics of a polythermal valley glacier on a centennial timescale: Midre Lovenbreen, Svalbard

Glasser, Neil F.; Hambrey, Michael J.; Hubbard, Alun L.; Murray, T. (2005)

Most polythermal glaciers in Svalbard, other than those of surge type, have receded steadily since the early 20th century. Midre Lovénbreen, a slow-moving, 4-km-long valley glacier terminating on land, is a typical example, ...
Debris transport in a temperate valley glacier: Haut Glacier d'Arolla, Valais, Switzerland

Goodsell, Becky; Hambrey, Michael J.; Glasser, Neil F. (2005-01)

This paper considers the role of structural glaciology in debris entrainment, transport and deposition at Haut Glacier d'Arolla, a temperate valley glacier in Valais, Switzerland. Sedimentological descriptions and clast ...
Cryological processes implied in Arctic proglacial stream sediment dynamics using principal components analysis and regression

Irvine-Fynn, T. D. L.; Moorman, B. J.; Sjogren, D. B.; Walter, F. S. A.; Willis, I. C.; Hodson, A. J.; Williams, J. L. M.; Mumford, P. N. (2005-01-01)

In high latitudes, recent research has demonstrated that both thermo-erosion and temperature dependence influence sediment release into fluvial systems. An analysis of proglacial suspended sediment concentration (SSC) ...
Geocryological processes linked to High Arctic proglacial stream suspended sediment dynamics: examples from Bylot Island, Nunavut, and Spitsbergen, Svalbard

Irvine-Fynn, T. D. L.; Moorman, B. J.; Willis, I. C.; Sjogren, D. B.; Hodson, A. J.; Mumford, P. N.; Walter, F. S. A.; Williams, J. L. M. (2005-01-01)

Recent research has identified differences in processes contributing to suspended sediment concentration (SSC) dynamics in proglacial streams between High Arctic and alpine catchments, but does not examine processes ...
Fast-flowing outlet glaciers of the last glacial maximum Patagonian Icefield

Glasser, Neil F.; Jansson, Krister N. (2005-03)

Glacial geomorphology around the Northern Patagonian Icefield indicates that a number of fast-flowing outlet glaciers (the continuation of ice streams further upglacier) drained the icefield during the Last Glacial Maximum. ...
Impact of a rock avalanche on a moraine-dammed proglacial lake: Laguna Safuna Alta, Cordillera Blanca, Peru

Hubbard, Bryn; Heald, A.; Reynolds, J.; Quincey, Duncan J.; Richardson, Shaun David (2005-09)

Moraines that dam proglacial lakes pose an increasing hazard to communities in the Andes and other mountain ranges. The moraines are prone to failure through collapse, overtopping by lake waters or the effect of displacement ...
Evidence from the Rio Bayo valley on the extent of the North Patagonian Icefield during the Late Pleistocene–Holocene transition

Ivy-Ochs, Susan; Duller, Geoff A. T.; Kubik, P. W.; Glasser, Neil F.; Harrison, Stephan (2006)

This paper presents data on the extent of the North Patagonian Icefield during the Late Pleistocene–Holocene transition using cosmogenic nuclide exposure age and optically stimulated luminescence dating. We describe ...

Now showing items 21-40 of 218

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