Results 31 to 40 of about 12,214 (254)

Stream hydrology controls on ice cliff evolution and survival on debris-covered glaciers [PDF]

Earth Surface Dynamics
Ice cliffs are melt hot spots that contribute disproportionately to melt on debris-covered glaciers. In this study, we investigate the impact of supraglacial stream hydrology on ice cliffs using in situ and remote sensing observations, streamflow ...
E. Petersen, R. Hock, R. Hock, M. G. Loso   +3 more
doaj   +1 more source

Sensitivity of Heinrich-type ice-sheet surge characteristics to boundary forcing perturbations [PDF]

Climate of the Past, 2023
Heinrich-type ice-sheet surges are one of the prominent signals of glacial climate variability. They are characterised as abrupt, quasi-periodic episodes of ice-sheet instabilities during which large numbers of icebergs are released from the Laurentide ...
C. Schannwell, U. Mikolajewicz, F. Ziemen, M.-L. Kapsch   +3 more
doaj   +1 more source

Thermal controls on ice stream shear margins

Journal of Glaciology, 2021
Ice stream discharge responds to a balance between gravity, basal friction and lateral drag. Appreciable viscous heating occurs in shear margins between ice streams and adjacent slow-moving ice ridges, altering the temperature-dependent viscosity ...
Pierce Hunter, Colin Meyer, Brent Minchew, Marianne Haseloff, Alan Rempel   +4 more
doaj   +1 more source

Subtemperate sliding reduces periodicity of ice stream temporal variability in a simple model

Journal of Glaciology
Understanding the formation and evolution of fast flowing ice streams is essential to projecting the response of ice sheets to climate forcings. Slow-flowing or stagnant ice streams can slide at low velocities over a bed that is below the bulk melting ...
Logan Elliott Mann, Colin Meyer, Alexander Robel, Elisa Mantelli   +3 more
doaj   +1 more source

Treatment of the ice-shelf backpressure and buttressing in two horizontal dimensions

Journal of Glaciology
The ice discharge from the grounded parts of marine ice sheets into the ocean is modulated by their floating extensions – ice shelves. The ice-shelf impact on the grounded ice is typically described as ‘backpressure’ or ‘buttressing’.
Olga Sergienko
doaj   +1 more source

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

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

Interpreting englacial layer deformation in the presence of complex ice flow history with synthetic radargrams

Annals of Glaciology, 2020
Fast ice flow on the Antarctic continent constitutes much of the mass loss from the ice sheet. However, geophysical methods struggle to constrain ice flow history at depth, or separate the signatures of topography, ice dynamics and basal conditions on ...
Cooper W. Elsworth, Dustin M. Schroeder, Matthew R. Siegfried   +2 more
doaj   +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

Engineering a Sonotherapeutic RBC Membrane‐Derived Nanoparticle Platform for the Treatment of Liver Cancer

Advanced Functional Materials, EarlyView.
Herein, an RBC membrane‐derived nanoparticle (CMN‐ICG) is engineered to efficiently deliver a sonosensitizing agent, indocyanine green (ICG), for sonotherapy of hepatocellular carcinoma (HCC). CMN‐ICG exhibits excellent cytocompatibility, significantly enhances hepatocyte uptake, and produces excessive reactive oxygen species (ROS) upon ultrasound ...
Alap Ali Zahid, Aishik Chakraborty, Wei Luo, Juhi Bora, John Joseph Kelly, John Andrew Ronald, Arghya Paul   +6 more
wiley   +1 more source