Results 61 to 70 of about 708,716 (215)

Stratigraphic evidence for modern‐like glacier extents in south‐central Alaska within the last glacial period (MIS 3)

Boreas, EarlyView.
The last (Wisconsinan) glacial period was punctuated in North America by two glacial maxima, known as the Early and Late Wisconsinan glaciations. In Alaska, these maxima and their subsequent retreats have been the object of dating efforts to reconstruct local climatic events and compare them to global trends.
Bruno Belotti, Elizabeth J. Cassel, Timothy C. Bartholomaus, Michael G. Loso, Michael S. Christoffersen, John W. Holt   +5 more
wiley   +1 more source

A numerical model for fluvial transport of subglacial sediment [PDF]

Journal of Geophysical Research: Earth Surface, 2019
ISSN:0196 ...
Delaney, Ian A., Werder, Mauro; id_orcid0000-0003-0137-9377, Farinotti, Daniel; id_orcid0000-0003-3417-4570   +2 more
openaire   +3 more sources

Dynamic subglacial meltwater history archived in Antarctic subglacial lake sediments

Geological Society of America Bulletin
Abstract There is a paucity of records on decadal to millennial scales archiving the evolution of the Antarctic subglacial hydrologic system, leaving a gap in our knowledge of the links between meltwater drainage and ice behavior. We employed a suite of sedimentological and geochemical methods to assess the stratigraphic distribution of ...
Timothy D. Campbell, Mark L. Skidmore, Molly O. Patterson, John E. Dore, David M. Harwood, Amy Leventer, Alexander B. Michaud, Brad E. Rosenheim, Matthew R. Siegfried, August J. Steigmeyer, Martyn Tranter, Ryan A. Venturelli, John C. Priscu   +12 more
openaire   +2 more sources

Middle to Late Pleistocene landscape evolution and glacial dynamics in the Eastern Alps: the Gröbminger Mitterberg record, Austria

Boreas, EarlyView.
Glacial erosion during the Last Glacial Maximum (LGM) has removed much evidence of earlier glaciations and interglacials in the European Alps. At Gröbminger Mitterberg (GM), beneath a blanket of LGM till, a distinctive sediment archive preserves deposits predating the LGM.
Gerit E. U. Griesmeier, Daniel P. Le Heron, Christopher Lüthgens, Gustav Firla, Bernhard Salcher, Fabian Dremel, Jan‐Christoph Otto, Jürgen M. Reitner   +7 more
wiley   +1 more source

Debris at the edge: sedimentological dynamics of Hintereisferner's evolving terminus and glacial forefield, Austrian Alps

Boreas, EarlyView.
The interaction between glaciers and the debris accumulating on their surfaces is critical as the Earth warms, with consequences for ice dynamics, hydrology and mass balance together with slope and sedimentary processes. Understanding this interaction is necessary since it influences ablation rates, sediment and meltwater pathways.
Paulina Mejías Osorio, Ricarda Wohlschlägl, Thomas M. Vandyk, Sara Karbacher, Bethan Joan Davies, Daniel Paul Le Heron   +5 more
wiley   +1 more source

Reconsideration of the Richardson Clay with subglacial defoming bed at an outcrop at the northern foot of Mt. Riiser-Larsen, West Enderby Land, East Antarctica

Antarctic Record, 2000
Outcrops bearing clayish stratified sediments at the northern foot of Mt. Riiser-Larsen, West Enderby Land, East Antarctica (named "Richardson Clay" by M. Hayashi, Proc. NIPR Symp. Antarct.
Kazuomi Hirakawa, Takanobu Sawagaki
doaj   +1 more source

Mapping of the Subglacial Topography of Folgefonna Ice Cap in Western Norway—Consequences for Ice Retreat Patterns and Hydrological Changes

Frontiers in Earth Science, 2022
Folgefonna consists of three ice caps which are rapidly retreating in response to warmer temperatures. The melting of Folgefonna has implications for meltwater drainage and hydropower production, as well as the potential for geohazards and impacts to ...
Fanny Ekblom Johansson, Jostein Bakke, Eivind Nagel Støren, Eivind Nagel Støren, Mette Kusk Gillespie, Tron Laumann   +5 more
doaj   +1 more source

Discriminating between subglacial and proglacial lake sediments: an example from the Dänischer Wohld Peninsula, northern Germany

, 2015
Subglacial lakes are common features of contemporary ice masses. However, they are rarely identified in the geological record. This is due to the difficulty in discriminating between subglacial and proglacial lake sediments; a proglacial origin is ...
S. Livingstone, J. Piotrowski, M. Bateman, J. Ely, C. Clark   +4 more
semanticscholar   +1 more source

Palaeolandscape reconstruction of a shallow coastal embayment in Kattegat, Denmark—influence of sea‐level changes during the latest Pleistocene and Holocene

Boreas, EarlyView.
We analyse the geological processes of a coastal embayment in the Kattegat. Using high‐resolution seismic data and sediment cores, we describe a geological evolution from glacial to shallow marine stages with a variety of preserved facies from different depositional settings, including glacio‐lacustrine, telmatic, limnic and coastal environments.
Katrine Juul Andresen, Lars Ole Boldreel, Ole Bennike, Christof Pearce, Mikkel Fruergaard, Verner Brandbyge Ernstsen, Aart Kroon, Nicole Rita Posth, Marit‐Solveig Seidenkrantz   +8 more
wiley   +1 more source

The feasibility of imaging subglacial hydrology beneath ice streams with ground-based electromagnetics

Journal of Glaciology, 2017
Subglacial hydrologic systems in Antarctica and Greenland play a fundamental role in ice-sheet dynamics, yet critical aspects of these systems remain poorly understood due to a lack of observations.
KERRY KEY, MATTHEW R. SIEGFRIED
doaj   +1 more source