Results 41 to 50 of about 27,220 (294)

Shallow upper mantle rheology and secular ice sheet fluctuations [PDF]

Tectonophysics, 2011
On time scales from decades to centuries, continental cryospheric forcing in response to climate change constitutes a major source of isostatic disequilibrium that may influence future regional sea level variations. Current vertical displacements and gravity field variations are often estimated neglecting rheological effects and thus assuming a fully ...
Spada, G., F. Colleoni, and G. Ruggieri
openaire   +2 more sources

Joint inversion estimate of regional glacial isostatic adjustment in Antarctica considering a lateral varying Earth structure (ESA STSE Project REGINA) [PDF]

, 2017
A major uncertainty in determining the mass balance of the Antarctic ice sheet from measurements of satellite gravimetry, and to a lesser extent satellite altimetry, is the poorly known correction for the ongoing deformation of the solid Earth caused by
Bamber, Jonathan L., Clarke, Peter J., Drinkwater, Mark R., Horvath, Alexander, Horwath, Martin, Klemann, Volker, Konrad, Hannes, Martín-Español, Alba, Pail, Roland, Petrie, Elizabeth J., Sasgen, Ingo, Wouters, Bert   +11 more
core   +3 more sources

Dynamics of ice mass deformation: Linking processes to rheology, texture, and microstructure

Geochemistry, Geophysics, Geosystems, 2013
Prediction of glacier and polar ice sheet dynamics is a major challenge, especially in view of changing climate. The flow behavior of an ice mass is fundamentally linked to processes at the grain and subgrain scale.
Sandra Piazolo, Christopher J. L. Wilson, Vladimir Luzin, Christophe Brouzet, Mark Peternell   +4 more
doaj   +1 more source

Strengthening of columnar-grained freshwater ice through cyclic flexural loading

Journal of Glaciology, 2020
Systematic experiments reveal that the flexural strength of freshwater S2 columnar-grained ice loaded normal to the columns increases upon cyclic loading.
Andrii Murdza, Erland M. Schulson, Carl E. Renshaw   +2 more
doaj   +1 more source

Rheology of Discrete Failure Regimes of Anisotropic Sea Ice [PDF]

Journal of Physical Oceanography, 2012
ABSTRACT A rheological model of sea ice is presented that incorporates the orientational distribution of ice thickness in leads embedded in isotropic floe ice. Sea ice internal stress is determined by coulombic, ridging and tensile failure at orientations where corresponding failure criteria are satisfied at minimum stresses. Because sea
Wilchinsky, Alexander V., Feltham, Daniel L.   +1 more
openaire   +1 more source

Rheology of an Ice-Floe Field [PDF]

Annals of Glaciology, 1984
The aim of the paper is (1) to develop theory to describe sea ice as a collection of finite-sized floes and (2) to construct a rheology based on this description.Successful sea-ice models have considered the ice to be a two-dimensional continuum with a nonlinear plastic rheology, a two-dimensional yield curve being used to determine the internal ice ...
openaire   +1 more source

A Maxwell elasto-brittle rheology for sea ice modelling [PDF]

The Cryosphere, 2016
Abstract. A new rheological model is developed that builds on an elasto-brittle (EB) framework used for sea ice and rock mechanics, with the intent of representing both the small elastic deformations associated with fracturing processes and the larger deformations occurring along the faults/leads once the material is highly damaged and fragmented.
Dansereau, Véronique, Weiss, Jérôme, Saramito, Pierre, Lattes, Philippe   +3 more
openaire   +5 more sources

Interior Structures and Tidal Heating in the TRAPPIST-1 Planets [PDF]

, 2018
With seven planets, the TRAPPIST-1 system has the largest number of exoplanets discovered in a single system so far. The system is of astrobiological interest, because three of its planets orbit in the habitable zone of the ultracool M dwarf.
Barr, Amy C., Dobos, Vera, Kiss, László L.   +2 more
core   +2 more sources

Firn densification in two dimensions: modeling the collapse of snow caves and enhanced densification in ice-stream shear margins

Journal of Glaciology
Accurate modeling of firn densification is necessary for ice core interpretation and assessing the mass balance of glaciers and ice sheets. In this paper, we revisit the nonlinear-viscous firn rheology introduced by Gagliardini and Meyssonnier (1997 ...
Jon Arrizabalaga-Iriarte, Lide Lejonagoitia-Garmendia, Christine S. Hvidberg, Aslak Grinsted, Nicholas M. Rathmann   +4 more
doaj   +1 more source

Nanorheology of Interfacial Water during Ice Gliding

Physical Review X, 2019
The slipperiness of ice is an everyday-life phenomenon, which, surprisingly, remains controversial despite a long scientific history. The very small friction measured on ice is classically attributed to the presence of a thin self-lubricating film of ...
L. Canale, J. Comtet, A. Niguès, C. Cohen, C. Clanet, A. Siria, L. Bocquet   +6 more
doaj   +1 more source