Results 51 to 60 of about 4,479,560 (350)

Application of Discrete Element Methods to Approximate Sea Ice Dynamics

Journal of Advances in Modeling Earth Systems, 2018
Lagrangian models of sea ice dynamics have several advantages over Eulerian continuum models. Spatial discretization on the ice floe scale is natural for Lagrangian models and offers exact solutions for mechanical nonlinearities with arbitrary sea ice ...
Anders Damsgaard, A. Adcroft, Olga V. Sergienko   +2 more
semanticscholar   +1 more source

Emergence of the Shackleton Range from beneath the Antarctic Ice Sheet due to glacial erosion [PDF]

, 2014
This paper explores the long-term evolution of a subglacial fjord landscape in the Shackleton Range, Antarctica. We propose that prolonged ice-sheet erosion across a passive continental margin caused troughs to deepen and lower the surrounding ice-sheet ...
Fogwill, C. J., Hein, A. S., Kerr, A. R., Kubik, P. W., Stuart, F. M., Sugden, David   +5 more
core   +1 more source

Ice Inheritance in Dynamical Disk Models

The Astrophysical Journal, 2021
Abstract The compositions of planet-forming disks are set by a combination of material inherited from the interstellar medium and material reprocessed during disk formation and evolution. Indeed, comets and primitive meteorites exhibit interstellar-like isotopic ratios and/or volatile compositions, supporting that some pristine material ...
Jennifer B. Bergner, Fred Ciesla
openaire   +2 more sources

Melt regimes, internal stratigraphy, and flow dynamics of three glaciers in the Alaska Range [PDF]

, 2012
We used ground-penetrating radar (GPR), GPS and glaciochemistry to evaluate melt regimes and ice depths, important variables for mass-balance and ice-volume studies, of Upper Yentna Glacier, Upper Kahiltna Glacier and the Mount Hunter ice divide, Alaska.
Arcone, Steven, Campbell, Seth, Introne, Douglas, Kreutz, K, Osterberg, Erich, Volkening, Kevin, Wake, Cameron P, Winski, Dominic   +7 more
core   +2 more sources

Implementation of water tracers in the Met Office Unified Model [PDF]

Geoscientific Model Development
There is an increasing need to understand how water is cycled and transported within the atmosphere, to aid water management. Here, atmospheric water tracers are added to the Met Office Unified Model (UM) to allow tracking of water within the model. This
A. J. McLaren, L. C. Sime, S. Wilson, J. Ridley, Q. Gao, Q. Gao, M. Gorguner, G. Line, M. Werner, P. Valdes   +9 more
doaj   +1 more source

The role of near-terminus conditions in the ice-flow speed of Upernavik Isstrøm in northwest Greenland

Annals of Glaciology, 2023
Upernavik Isstrøm, the largest contributor to sea-level rise in northwest Greenland, has experienced complex and contrasting ice-flow-speed changes across its five outlets over the last two decades.
Kelsey M. Voss, Karen E. Alley, David A. Lilien, Dorthe Dahl-Jensen   +3 more
doaj   +1 more source

Low-temperature muon spin rotation studies of the monopole charges and currents in Y doped Ho2Ti2O7 [PDF]

, 2013
In the ground state of Ho2Ti2O7 spin ice, the disorder of the magnetic moments follows the same rules as the proton disorder in water ice. Excitations take the form of magnetic monopoles that interact via a magnetic Coulomb interaction.
AP Ramirez, BC den Hertog, C Castelnovo, C Castelnovo, D Slobinsky, DJP Morris, G Balakrishnan, H Kadowaki, IA Ryzhkin, J Lago, J Snyder, J Snyder, JA Quilliam, K Matsuhira, L Onsager, LDC Jaubert, LJ Chang, LR Yaraskavitch, MJ Harris, OA Petrenko, S Erfanifam, SJ Blundell, SR Dunsiger, SR Giblin, ST Bramwell, ST Bramwell, ST Bramwell, ST Bramwell, SV Isakov, T Fennell, T Yavors'kii   +30 more
core   +2 more sources

Antarctic last interglacial isotope peak in response to sea ice retreat not ice-sheet collapse

Nature Communications, 2016
The peak in Antarctic ice core isotope values, 128,000 years before present, was concurrent with a significantly warmer-than-present Antarctic climate.
Max D. Holloway, Louise C. Sime, Joy S. Singarayer, Julia C. Tindall, Pete Bunch, Paul J. Valdes   +5 more
doaj   +1 more source

The Mid-Pleistocene Transition induced by delayed feedback and bistability [PDF]

, 2018
The Mid-Pleistocene Transition, the shift from 41 kyr to 100 kyr glacial-interglacial cycles that occurred roughly 1 Myr ago, is often considered as a change in internal climate dynamics.
Lenton, Timothy M., Quinn, Courtney, Sieber, Jan, von der Heydt, Anna S.   +3 more
core   +3 more sources

Nonsmooth frameworks for an extended Budyko model

, 2017
In latitude-dependent energy balance models, ice-free and ice-covered conditions form physical boundaries of the system. With carbon dioxide treated as a bifurcation parameter, the resulting bifurcation diagram is nonsmooth with curves of equilibria and ...
Barry, Anna M., McGehee, Richard, Widiasih, Esther   +2 more
core   +1 more source