Zobrazeno 1 - 10
of 247
pro vyhledávání: '"I Benn"'
Publikováno v:
Geoscientific Model Development, Vol 17, Pp 5759-5777 (2024)
A new calving algorithm is developed in the glacier model Elmer/Ice that allows unrestricted calving and terminus advance in 3D. The algorithm uses the meshing software Mmg to implement anisotropic remeshing and allow mesh adaptation at each time ste
Externí odkaz:
https://doaj.org/article/30a9ebcbd2b2417bb36633570d10e5d9
Autor:
William D. Harcourt, Duncan A. Robertson, David G. Macfarlane, Brice R. Rea, Matteo Spagnolo, Douglas I. Benn, Mike R. James
Publikováno v:
Annals of Glaciology, Vol 63, Pp 116-120 (2022)
Close-range sensors are employed to observe glaciological processes that operate over short timescales (e.g. iceberg calving, glacial lake outburst floods, diurnal surface melting). However, under poor weather conditions optical instruments fail whil
Externí odkaz:
https://doaj.org/article/4ab5ad15e85643efbd0c218663c9eddf
Publikováno v:
Annals of Glaciology, Vol 63, Pp 88-94 (2022)
It is commonly asserted that there are two distinct classes of glacier surges: slow, long-duration ‘Svalbard-type’ surges, triggered by a transition from cold- to warm-based conditions (thermal switching), and fast, shorter-duration ‘Alaska-typ
Externí odkaz:
https://doaj.org/article/8146f047d2c541559d14562faaac9042
Autor:
D. I. Benn, A. Luckman, J. A. Åström, A. J. Crawford, S. L. Cornford, S. L. Bevan, T. Zwinger, R. Gladstone, K. Alley, E. Pettit, J. Bassis
Publikováno v:
The Cryosphere, Vol 16, Pp 2545-2564 (2022)
Ice shelves play a key role in the dynamics of marine ice sheets by buttressing grounded ice and limiting rates of ice flux to the oceans. In response to recent climatic and oceanic change, ice shelves fringing the West Antarctic Ice Sheet (WAIS) hav
Externí odkaz:
https://doaj.org/article/3bba9227fc474be2acf2e101724fedd7
Publikováno v:
The Cryosphere, Vol 15, Pp 5577-5599 (2021)
Meltwater from Himalayan glaciers sustains the flow of rivers such as the Ganges and Brahmaputra on which over half a billion people depend for day-to-day needs. Upstream areas are likely to be affected substantially by climate change, and changes in
Externí odkaz:
https://doaj.org/article/849e48bd78b046e0baeb8f36baf122ab
Publikováno v:
The Cryosphere, Vol 15, Pp 3317-3328 (2021)
Between 2014 and 2017, ocean melt eroded a large cavity beneath and along the western margin of the fast-flowing core of Thwaites Glacier. Here we show that from 2017 to the end of 2020 the cavity persisted but did not expand. This behaviour, of melt
Externí odkaz:
https://doaj.org/article/f6d325f481bd4339ac1cfdcc1d3dd126
Autor:
Nanna B. Karlsson, Anne M. Solgaard, Kenneth D. Mankoff, Fabien Gillet-Chaulet, Joseph A. MacGregor, Jason E. Box, Michele Citterio, William T. Colgan, Signe H. Larsen, Kristian K. Kjeldsen, Niels J. Korsgaard, Douglas I. Benn, Ian J. Hewitt, Robert S. Fausto
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-10 (2021)
Melting at the base of the Greenland Ice Sheet is often disregarded as a source of quantifiable mass loss. In this study, the authors find the basal mass loss is equivalent to 8% of the ice sheet’s present imbalance, and that the loss of mass from
Externí odkaz:
https://doaj.org/article/82d1dd641a264fc68729582276cdbe59
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)
Ice-cliff failure that leads to marine ice-cliff instability could accelerate Antarctic Ice Sheet retreat. Here, the authors use 3D glacier models to investigate ice-cliff failure, derive a retreat rate relationship, and quantify mélange back force
Externí odkaz:
https://doaj.org/article/76d98a26e5224cb38c552d6e93465f10
Buoyant calving and ice-contact lake evolution at Pasterze Glacier (Austria) in the period 1998–2019
Publikováno v:
The Cryosphere, Vol 15, Pp 1237-1258 (2021)
Rapid growth of proglacial lakes in the current warming climate can pose significant outburst flood hazards, increase rates of ice mass loss, and alter the dynamic state of glaciers. We studied the nature and rate of proglacial lake evolution at Past
Externí odkaz:
https://doaj.org/article/cc64722076964ed0ae411e51cc4c4e09
Autor:
E. C. H. van Dongen, G. Jouvet, S. Sugiyama, E. A. Podolskiy, M. Funk, D. I. Benn, F. Lindner, A. Bauder, J. Seguinot, S. Leinss, F. Walter
Publikováno v:
The Cryosphere, Vol 15, Pp 485-500 (2021)
Ice mass loss from the Greenland ice sheet is the largest single contributor to sea level rise in the 21st century. The mass loss rate has accelerated in recent decades mainly due to thinning and retreat of its outlet glaciers. The diverse calving me
Externí odkaz:
https://doaj.org/article/062605cf99414de6a26b84793de722bc