Results 41 to 50 of about 217,482 (300)

A new approach to inferring basal drag and ice rheology in ice streams, with applications to West Antarctic Ice Streams

Journal of Glaciology, 2021
Drag at the bed and along the lateral margins are the primary forces resisting flow in outlet glaciers. Simultaneously inferring these parameters is challenging since basal drag and ice viscosity are coupled in the momentum balance, which governs ice ...
Meghana Ranganathan, Brent Minchew, Colin R. Meyer, G. Hilmar Gudmundsson   +3 more
doaj   +1 more source

The shallow shelf approximation as a "sliding law" in a thermomechanically coupled ice sheet model

, 2008
The shallow shelf approximation is a better ``sliding law'' for ice sheet modeling than those sliding laws in which basal velocity is a function of driving stress.
Aschwanden, Balay, Blatter, Bueler, Bueler, Clarke, Ed Bueler, Fowler, Fowler, Greve, Greve, Greve, Greve, Hindmarsh, Hindmarsh, Howat, Hulbe, Hutter, Huybrechts, Huybrechts, Jed Brown, Jenssen, Johnson, Joughin, Joughin, Joughin, Joughin, MacAyeal, MacAyeal, Mahaffy, Marshall, Marshall, Marshall, Morland, Morland, Morton, Paterson, Paterson, Pattyn, Pattyn, Payne, Pollard, Raymond, Ritz, Ritz, Saad, Saito, Saito, Saito, Schoof, Schoof, Schoof, Schoof, Shepherd, Tarasov, Truffer, Truffer, Tulaczyk, Tulaczyk, Vaughan, Weis, Wesseling, Zwally, Zwinger   +63 more
core   +1 more source

Multianalytical provenance analysis of Eastern Ross Sea LGM till sediments (Antarctica): Petrography, geochronology, and thermochronology detrital data [PDF]

, 2017
In order to reveal provenance of detrital sediments supplied by West Antarctic Ice Sheet (WAIS), 19 glaciomarine cores of Last Glacial Maximum age were analyzed from Eastern Ross Sea and Sulzberger Bay.
Andreucci, Benedetta, Langone, Antonio, Perotti, Matteo, Talarico, Franco, Zattin, Massimiliano   +4 more
core   +2 more sources

Insights into ice stream dynamics through modelling their response to tidal forcing [PDF]

The Cryosphere, 2014
The tidal forcing of ice streams at their ocean boundary can serve as a natural experiment to gain an insight into their dynamics and constrain the basal sliding law.
S. H. R. Rosier, G. H. Gudmundsson, J. A. M. Green   +2 more
doaj   +1 more source

Interaction and Variability of Ice Streams under a Triple-Valued Sliding Law and Non-Newtonian Rheology [PDF]

, 2014
Ice streams are regions of fast flowing glacier ice that transport a significant portion of the total ice flux from present ice sheets. The flow pattern of ice streams can vary both temporally and spatially. In particular, ice streams can become stagnant
Sayag, Roiy, Tziperman, Eli
core   +2 more sources

The role of ice stream dynamics in deglaciation [PDF]

, 2016
Since the mid-Pleistocene transition, deglaciation has occurred only after ice sheets have grown large while experiencing several precession and obliquity cycles, indicating that large ice sheets are more sensitive to Milankovitch forcing than small ice ...
Robel, Alexander A., Tziperman, Eli
core   +1 more source

Ice Streams of the Laurentide Ice Sheet [PDF]

Géographie physique et Quaternaire, 2006
Ice streams had a major influence on the configuration and the stability of the Laurentide Ice Sheet. Their identification is crucial for an understanding of ice sheet behaviour and their importance is reflected by the recent increase in paleo-ice stream research.
Winsborrow, Monica C.M., Clark, Chris D., Stokes, Chris R.   +2 more
openaire   +2 more sources

Designed Liquid Crystalline Nanoassemblies From Clinically Validated Polyunsaturated Lipids for Combined Antioxidant, Anti‐Apoptotic, and Neurotrophic Treatments

Advanced Healthcare Materials, EarlyView.
Ionizable lipid nanoparticles target multiple pathological pathways in neurodegeneration. The designed self‐assembled materials undergo a pH‐triggered structural transformation from a cubosome/hexosome coexistence to a hexosome phase, enhancing intracellular delivery of a multi‐target phytochemical formulation. The antioxidant‐loaded pH‐responsive LNPs
Thelma Akanchise, Fucen Luo, Borislav Angelov, Yuru Deng, Angelina Angelova   +4 more
wiley   +1 more source

Morphology and distribution of lakes under the Laurentide Ice Sheet: implications for ice flow dynamics

Boreas
This study examines the distribution and morphology of lakes under the Laurentide Ice Sheet (LIS) to investigate relationships with ice flow velocity, bedrock and basal thermal regime.
Sarah M. Principato, Carissa M. Mobley
doaj   +1 more source

Evidence that seismic anisotropy captures upstream palaeo-ice fabric: Implications on present-day deformation at Whillans Ice Stream, Antarctica

Journal of Glaciology
Understanding deformation and slip at ice streams, which are responsible for 90% of Antarctic ice loss, are vital for accurately modelling large-scale ice flow. Ice crystal orientation fabric (COF) has a first-order effect on ice stream deformation.
Justin Leung, Thomas Samuel Hudson, John-Michael Kendall, Grace Barcheck   +3 more
doaj   +1 more source