Zobrazeno 1 - 10
of 1 787
pro vyhledávání: '"J. Feldmann"'
Publikováno v:
The Cryosphere, Vol 18, Pp 4011-4028 (2024)
Ice rises or ice rumples act as ice-shelf pinning points that can play an important role in regulating the ice discharge of marine outlet glaciers. As an example, the observed recent gradual ungrounding of the ice shelf of West Antarctica's Thwaites
Externí odkaz:
https://doaj.org/article/3a531bff434446d9a65c6af43c4094f4
Autor:
J. Feldmann, A. Levermann
Publikováno v:
The Cryosphere, Vol 17, Pp 327-348 (2023)
The timescales of the flow and retreat of Greenland's and Antarctica's outlet glaciers and their potential instabilities are arguably the largest uncertainty in future sea-level projections. Here we derive a scaling relation that allows the compariso
Externí odkaz:
https://doaj.org/article/6e828b7c83434e65a6032013ff7b65a6
Publikováno v:
The Cryosphere, Vol 16, Pp 1979-1996 (2022)
Owing to global warming and particularly high regional ocean warming, both Thwaites and Pine Island Glaciers in the Amundsen region of the Antarctic Ice Sheet could lose their buttressing ice shelves over time. We analyse the possible consequences us
Externí odkaz:
https://doaj.org/article/142963221e9d46cdb4b14e9af706463f
Publikováno v:
The Cryosphere, Vol 16, Pp 1927-1940 (2022)
Basal ice-shelf melting is the key driver of Antarctica's increasing sea-level contribution. In diminishing the buttressing force of the ice shelves that fringe the ice sheet, the melting increases the ice discharge into the ocean. Here we contrast t
Externí odkaz:
https://doaj.org/article/96417233b63148bf9573491d3c040061
Autor:
S. L. Cornford, H. Seroussi, X. S. Asay-Davis, G. H. Gudmundsson, R. Arthern, C. Borstad, J. Christmann, T. Dias dos Santos, J. Feldmann, D. Goldberg, M. J. Hoffman, A. Humbert, T. Kleiner, G. Leguy, W. H. Lipscomb, N. Merino, G. Durand, M. Morlighem, D. Pollard, M. Rückamp, C. R. Williams, H. Yu
Publikováno v:
The Cryosphere, Vol 14, Pp 2283-2301 (2020)
We present the result of the third Marine Ice Sheet Model Intercomparison Project, MISMIP+. MISMIP+ is intended to be a benchmark for ice-flow models which include fast sliding marine ice streams and floating ice shelves and in particular a treatment
Externí odkaz:
https://doaj.org/article/78b5771f6ed44fecad1082333dd9a271
Autor:
A. Levermann, J. Feldmann
Publikováno v:
The Cryosphere, Vol 13, Pp 1621-1633 (2019)
Recent observations and ice-dynamic modeling suggest that a marine ice-sheet instability (MISI) might have been triggered in West Antarctica. The corresponding outlet glaciers, Pine Island Glacier (PIG) and Thwaites Glacier (TG), showed significant r
Externí odkaz:
https://doaj.org/article/3c05f2b8352948619b732e996291aeec
Publikováno v:
Geofluids, Vol 2021 (2021)
Iron oxide grain coatings in red sandstones contain trace metals that are released upon dissolution of the coatings. Analyses by ICP-MS following acid leaching of the grain coatings show that the dissolved metals can constitute an ore-forming fluid,
Externí odkaz:
https://doaj.org/article/772efb49b1324f10ab802cb95b5d15e0
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-8 (2017)
Computing approaches in the optical domain would allow for ultra-fast signaling and ultra-high bandwidth capabilities. Here, Feldmann et al. demonstrate a photonic abacus, which provides multistate compute-and store operation by integrating phase-cha
Externí odkaz:
https://doaj.org/article/1f10c741305946a0a482ce3f8cf012e7
Autor:
J. Feldmann, A. Levermann
Publikováno v:
The Cryosphere, Vol 11, Pp 1913-1932 (2017)
>Here we report on a cyclic, physical ice-discharge instability in the Parallel Ice Sheet Model, simulating the flow of a three-dimensional, inherently buttressed ice-sheet-shelf system which periodically surges on a millennial timescale. The ther
Externí odkaz:
https://doaj.org/article/e0055a6fad764186be7cda35a1e230c7
Autor:
J. Feldmann, A. Levermann
Publikováno v:
The Cryosphere, Vol 10, Iss 4, Pp 1753-1769 (2016)
The concept of similitude is commonly employed in the fields of fluid dynamics and engineering but rarely used in cryospheric research. Here we apply this method to the problem of ice flow to examine the dynamic similitude of isothermal ice sheets in
Externí odkaz:
https://doaj.org/article/e50c97b29c7e492e89eceb71b9013360