Results 11 to 20 of about 385,884 (298)

The anatomy of past abrupt warmings recorded in Greenland ice

Nature Communications, 2021
Palaeodata resolution and dating limit the study of the sequence of changes across Earth during past abrupt warmings. Here, the authors show tight decadal-scale coupling between Greenland climate, North Atlantic sea ice and atmospheric circulation during
E. Capron, S. O. Rasmussen, T. J. Popp, T. Erhardt, H. Fischer, A. Landais, J. B. Pedro, G. Vettoretti, A. Grinsted, V. Gkinis, B. Vaughn, A. Svensson, B. M. Vinther, J. W. C. White   +13 more
doaj   +1 more source

Basal traction mainly dictated by hard-bed physics over grounded regions of Greenland [PDF]

The Cryosphere, 2021
On glaciers and ice sheets, identifying the relationship between velocity and traction is critical to constrain the bed physics that controls ice flow. Yet in Greenland, these relationships remain unquantified.
N. Maier, F. Gimbert, F. Gillet-Chaulet, A. Gilbert   +3 more
doaj   +1 more source

A multi-ice-core, annual-layer-counted Greenland ice-core chronology for the last 3800 years: GICC21 [PDF]

Climate of the Past, 2022
Ice-core timescales are vital for the understanding of past climate; hence they should be updated whenever significant amounts of new data become available.
G. Sinnl, M. Winstrup, T. Erhardt, T. Erhardt, E. Cook, C. M. Jensen, A. Svensson, B. M. Vinther, R. Muscheler, S. O. Rasmussen   +9 more
doaj   +1 more source

Upstream flow effects revealed in the EastGRIP ice core using Monte Carlo inversion of a two-dimensional ice-flow model [PDF]

The Cryosphere, 2021
The Northeast Greenland Ice Stream (NEGIS) is the largest active ice stream on the Greenland Ice Sheet (GrIS) and a crucial contributor to the ice-sheet mass balance.
T. A. Gerber, C. S. Hvidberg, S. O. Rasmussen, S. Franke, G. Sinnl, A. Grinsted, D. Jansen, D. Dahl-Jensen, D. Dahl-Jensen   +8 more
doaj   +1 more source

Cyclic strengthening of lake ice

Journal of Glaciology, 2021
Further to systematic experiments on the flexural strength of laboratory-grown, fresh water ice loaded cyclically, this paper describes results from new experiments of the same kind on lake ice harvested in Svalbard. The experiments were conducted at −12
Andrii Murdza, Aleksey Marchenko, Erland M. Schulson, Carl E. Renshaw   +3 more
doaj   +1 more source

On the physical basis for the creep of ice: the high temperature regime

Journal of Glaciology, 2020
This work quantifies the increased temperature sensitivity of the constitutive behavior of ice with proximity to the melting point in terms of dislocation mechanics.
D.M. Cole
doaj   +1 more source

A New Remotely Operated Sensor Platform for Interdisciplinary Observations under Sea Ice

Frontiers in Marine Science, 2017
Observation of the climate and ecosystem of ice covered polar seas is a timely task for the scientific community. The goal is to assess the drastic and imminent changes of the polar sea ice cover induced by climate change. Retreating and thinning sea ice
Christian Katlein, Martin Schiller, Hans J. Belter, Veronica Coppolaro, David Wenslandt, Marcel Nicolaus   +5 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

Simulating higher-order fabric structure in a coupled, anisotropic ice-flow model: application to Dome C

Journal of Glaciology, 2023
Ice-crystal fabric can induce mechanical anisotropy that significantly affects flow, but ice-flow models generally do not include fabric development or its effect upon flow.
David A. Lilien, Nicholas M. Rathmann, Christine S. Hvidberg, Aslak Grinsted, M. Reza Ershadi, Reinhard Drews, Dorthe Dahl-Jensen   +6 more
doaj   +1 more source

Artificial Kagome Arrays of Nanomagnets: A Frozen Dipolar Spin Ice [PDF]

, 2011
Magnetic frustration effects in artificial kagome arrays of nanomagnets are investigated using x-ray photoemission electron microscopy and Monte Carlo simulations.
A. Bendounan, A. Duluard, B. Canals, D. Lacour, F. Maccherozzi, F. Montaigne, M. Hehn, M. J. P. Gingras, N. Rougemaille, O. Fruchart, R. Belkhou, S. El Moussaoui   +11 more
core   +3 more sources