Results 81 to 90 of about 401,804 (204)
Comptes Rendus. Physique, 2004 Abstract Rapid flow of ice streams is caused either by great thickness, or by effective basal lubrication especially from deforming tills. Competing thermal processes act to stabilize and to destabilize the well-lubricated ice streams, and may contribute to their observed short-term variability yet long-term persistence. Increasing evidence indicates
Richard B. Alley +3 more
openaire +2 more sources
Ice-stream stability on a reverse bed slope [PDF]
Nature Geoscience, 2012 Marine ice streams whose beds deepen inland are thought to be inherently unstable. Numerical modelling of the Maguerite Bay ice-stream retreat in West Antarctica since the Last Glacial Maximum suggests that an ice stream can stabilize on an inland-sloping bed owing to increased lateral drag where the ice stream narrows.
Jamieson, Stewart S.R. +6 more
openaire +5 more sources
First description of subglacial megalineations from the late Paleozoic ice age in southern Africa.
PLoS ONE, 2019 We identify late Paleozoic ice age (LPIA) subglacial megalineations from field and geospatial imagery of the Twyfelfontein area of northern Namibia, and present the results of a geomorphometric analysis of those data.
Graham D Andrews +3 more
doaj +1 more source
Analysis of Ice Plains of Filchner/Ronne Ice Shelf Using ICESat Data [PDF]
, 2010 We use repeat-track laser altimeter data from the Ice, Cloud, and land Elevation Satellite (ICESat) to map the grounding zone of Filchner/Ronne Ice Shelf (FRIS), Antarctica. Repeated passes of ICESat reveal ice flexure in the grounding zone occurs as the
Brunt, Kelly M. +2 more
core +1 more source
Journal of Glaciology, 2020 Streaming ice accounts for a major fraction of global ice flux, yet we cannot yet fully explain the dominant controls on its kinematics. In this contribution, we use an anisotropic full-Stokes thermomechanical flow solver to characterize how mechanical ...
Kate Hruby +5 more
doaj +1 more source
Analytical analysis of small-amplitude perturbations in the shallow ice stream approximation
, 2008 International audienceNew analytical solutions describing the effects of small-amplitude perturbations in boundary data on flow in the shallow ice stream approximation are presented.
Gudmundsson, G. H.
core +1 more source
Technical note: formation of airborne ice crystals in a wall independent reactor (WIR) under atmospheric conditions [PDF]
, 2008 Both, gas and particle scavenging contribute to the transport of organic compounds by ice crystals in the troposphere. To simulate these processes an experimental setup was developed to form airborne ice crystals under atmospheric conditions. Experiments
Fries, Elke +6 more
core
The marginal shear stress of Ice Stream B, West Antarctica [PDF]
, 1997 To ascertain whether the velocity of Ice Stream B, West Antarctica, may be controlled by the stress in its marginal shear zones (the "Snake" and the "Dragon"), we undertook a determination of the marginal shear stress in the Dragon near Camp Up B by ...
Jackson, Miriam, Kamb, Barclay
core +1 more source
Left High and Dry: Deglaciation of Dogger Bank, North Sea, Recorded in Proglacial Lake Evolution
Frontiers in Earth Science, 2019 Reconstructions of palaeo-ice sheet retreat in response to climate warming using offshore archives can provide vital analogs for future ice-sheet behavior.
Andy R. Emery +5 more
doaj +1 more source
Data requirements in support of the marine weather service program [PDF]
, 1972 Data support activities for the Marine Weather Service Program are outlined. Forecasts, cover anomolous water levels, including sea and swell, surface and breakers, and storm surge.
Mccaslin, R. W., Mull, M., Travers, J.
core +1 more source