Výsledky vyhledávání - "James L. Fastook"

Pre-LGM Northern Hemisphere ice sheet topography

Autor: Rodrigo Caballero, Karin Ebert, James L. Fastook, Johan Nilsson, Johan Kleman

Publikováno v: Climate of the Past, Vol 9, Iss 5, Pp 2365-2378 (2013)

We here reconstruct the paleotopography of Northern Hemisphere ice sheets during the glacial maxima of marine isotope stages (MIS) 5b and 4.We employ a combined approach, blending geologically based reconstruction and numerical modeling, to arrive at

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d2b2c6c00c274bd0ed841561f279a19
https://www.clim-past.net/9/2365/2013/

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The Scalability of Embedded Structured Grids and Unstructured Grids in Large Scale Ice Sheet Modeling on Distributed Memory Parallel Computers

Autor: Phillip M. Dickens, Christopher Dufour, James L. Fastook

Publikováno v: IPDPS Workshops

Currently, there are two approaches to implementing large-scale ice sheet simulations. One approach, which is based on the use of an evenly-spaced structured grid, is to simulate the entire ice sheet at the highest resolution required. The other appr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::86790a249530e52daf19001c426bf598
https://doi.org/10.1109/ipdpsw.2018.00152

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Projecting Antarctic ice discharge using response functions from SeaRISE ice-sheet models

Autor: Tatsuru Sato, Hartmut Hellmer, Ralph Timmermann, James L. Fastook, Katja Frieler, David Pollard, Anders Levermann, Ralf Greve, Wei Li Wang, Robert Bindschadler, Ricarda Winkelmann, Antony J. Payne, Matthias Mengel, Malte Meinshausen, Sophie Nowicki, Maria A. Martin

Publikováno v: Earth System Dynamics, Vol 5, Iss 2, Pp 271-293 (2014)
Earth System Dynamics, 5, 2
Earth System Dynamics

The largest uncertainty in projections of future sea-level change results from the potentially changing dynamical ice discharge from Antarctica. Basal ice-shelf melting induced by a warming ocean has been identified as a major cause for additional ic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72813545eaf72c92e161d4737e036817
http://hdl.handle.net/2115/57057

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Middle to Late Amazonian tropical mountain glaciers on Mars: The ages of the Tharsis Montes fan-shaped deposits

Autor: Seth J. Kadish, James L. Fastook, David R. Marchant, James W. Head

Publikováno v: Planetary and Space Science. 91:52-59

Fan-shaped deposits (FSDs) extending to the northwest of the Tharsis Montes on Mars are the remnants of Amazonian-aged, cold-based, tropical mountain glaciers. We use high-resolution images to perform new impact crater size-frequency distribution (CS

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ad07fc1cd061521d17d9ff1eab22e60f
https://doi.org/10.1016/j.pss.2013.12.005

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Formation of lobate debris aprons on Mars: Assessment of regional ice sheet collapse and debris-cover armoring

Autor: James W. Head, James L. Fastook, David R. Marchant

Publikováno v: Icarus. 228:54-63

Lobate debris aprons (LDA) are lobate-shaped aprons surrounding scarps and isolated massifs that are concentrated in the vicinity of the northern Dichotomy Boundary on Mars. LDAs have been interpreted as (1) ice-cemented talus aprons undergoing visco

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c2c3a2e67eb326e8320a2b42d5f5143a
https://doi.org/10.1016/j.icarus.2013.09.025

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New perspectives on paleoglaciology

Autor: Terence J. Hughes, James L. Fastook

Publikováno v: Quaternary Science Reviews. 80:169-194

Paleoglaciology deals with glaciation cycles of the Quaternary Ice Age. It combines the dynamics of present-day ice sheets deduced from glaciology with the history of former ice sheets deduced from glacial geology. Cosmogenic dating now makes a detai

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fa93914c2810359975cccebc89fe4876
https://doi.org/10.1016/j.quascirev.2013.08.023

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Insights into spatial sensitivities of ice mass response to environmental change from the SeaRISE ice sheet modeling project I: Antarctica

Publikováno v: Journal of Geophysical Research: Earth Surface. 118:1002-1024

Atmospheric, oceanic, and subglacial forcing scenarios from the Sea-level Response to Ice Sheet Evolution (SeaRISE) project are applied to six three-dimensional thermomechanical ice-sheet models to assess Antarctic ice sheet sensitivity over a 500 ye

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::190398ab16c668e6756284c42c7049d4
https://doi.org/10.1002/jgrf.20081

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Ice-sheet model sensitivities to environmental forcing and their use in projecting future sea level (the SeaRISE project)

Publikováno v: Bindschadler, Robert A; Nowicki, Sophie; Abe-Ouchi, Ayako; Aschwanden, Andy; Choi, Hyeungu; Fastook, Jim; et al.(2013). Ice-sheet model sensitivities to environmental forcing and their use in projecting future sea level (the SeaRISE project). Journal of Glaciology, 59(214), 195-224. doi: 10.3189/2013JoG12J125. UC Irvine: Department of Earth System Science, UCI. Retrieved from: http://www.escholarship.org/uc/item/0gz6g1cc

Ten ice-sheet models are used to study sensitivity of the Greenland and Antarctic ice sheets to prescribed changes of surface mass balance, sub-ice-shelf melting and basal sliding. Results exhibit a large range in projected contributions to sea-level

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12c820fbc1c8c9dc8ae6dfa5845007d3
https://doi.org/10.3189/2013jog12j125

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