Zobrazeno 1 - 10
of 694
pro vyhledávání: '"W. Nicholls"'
Autor:
J.-B. Sallée, L. Vignes, A. Minière, N. Steiger, E. Pauthenet, A. Lourenco, K. Speer, P. Lazarevich, K. W. Nicholls
Publikováno v:
Ocean Science, Vol 20, Pp 1267-1280 (2024)
Bottom water formation in the Weddell Sea and mass loss from the Filchner–Ronne Ice Shelf are tightly linked by the supply of Warm Deep Water to the continental shelf. Heavy sea ice cover and icebergs restrict ship access and upper-ocean measuremen
Externí odkaz:
https://doaj.org/article/2161a024986a42dc8287caacac8ebf88
Autor:
Alessandro Silvano, Sarah Purkey, Arnold L. Gordon, Pasquale Castagno, Andrew L. Stewart, Stephen R. Rintoul, Annie Foppert, Kathryn L. Gunn, Laura Herraiz-Borreguero, Shigeru Aoki, Yoshihiro Nakayama, Alberto C. Naveira Garabato, Carl Spingys, Camille Hayatte Akhoudas, Jean-Baptiste Sallée, Casimir de Lavergne, E. Povl Abrahamsen, Andrew J. S. Meijers, Michael P. Meredith, Shenjie Zhou, Takeshi Tamura, Kaihe Yamazaki, Kay I. Ohshima, Pierpaolo Falco, Giorgio Budillon, Tore Hattermann, Markus A. Janout, Pedro Llanillo, Melissa M. Bowen, Elin Darelius, Svein Østerhus, Keith W. Nicholls, Craig Stevens, Denise Fernandez, Laura Cimoli, Stanley S. Jacobs, Adele K. Morrison, Andrew McC. Hogg, F. Alexander Haumann, Ali Mashayek, Zhaomin Wang, Rodrigo Kerr, Guy D. Williams, Won Sang Lee
Publikováno v:
Frontiers in Marine Science, Vol 10 (2023)
Dense, cold waters formed on Antarctic continental shelves descend along the Antarctic continental margin, where they mix with other Southern Ocean waters to form Antarctic Bottom Water (AABW). AABW then spreads into the deepest parts of all major oc
Externí odkaz:
https://doaj.org/article/7ec8799498c04806b82197b2a7faab09
Autor:
Elin Darelius, Kjersti Daae, Vår Dundas, Ilker Fer, Hartmut H. Hellmer, Markus Janout, Keith W. Nicholls, Jean-Baptiste Sallée, Svein Østerhus
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-7 (2023)
Recent modeling challenges our view on where the on-shelf heat flux in Antarctica occurs, suggesting it to be large where dense waters descend the continental slope. The authors provide observational evidence from the Weddell Sea supporting this clai
Externí odkaz:
https://doaj.org/article/4610fb0285594698afee32c5f309fb84
Autor:
A. Humbert, J. Christmann, H. F. J. Corr, V. Helm, L.-S. Höyns, C. Hofstede, R. Müller, N. Neckel, K. W. Nicholls, T. Schultz, D. Steinhage, M. Wolovick, O. Zeising
Publikováno v:
The Cryosphere, Vol 16, Pp 4107-4139 (2022)
Ice shelves play a key role in the stability of the Antarctic Ice Sheet due to their buttressing effect. A loss of buttressing as a result of increased basal melting or ice shelf disintegration will lead to increased ice discharge. Some ice shelves e
Externí odkaz:
https://doaj.org/article/5dfe9d0c25354de0a1e909df18e69804
Publikováno v:
Annals of Glaciology, Vol 63, Pp 27-32 (2022)
Ocean-driven melt of Antarctic ice shelves is an important control on mass loss from the ice sheet, but is complex to study due to significant variability in melt rates both spatially and temporally. Here we assess the strengths and weakness of satel
Externí odkaz:
https://doaj.org/article/032795014b51461db551b127580f95f3
Autor:
Irena Vaňková, J. Paul Winberry, Sue Cook, Keith W. Nicholls, Chad A. Greene, Benjamin K. Galton‐Fenzi
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 10, Pp n/a-n/a (2023)
Abstract Totten Glacier is a fast‐moving East Antarctic outlet with the potential for significant future sea‐level contributions. We deployed four autonomous phase‐sensitive radars on its ice shelf to monitor ice‐ocean interactions near its g
Externí odkaz:
https://doaj.org/article/87fdaa9d1fd544ce84c8e2e2992e3b73
Publikováno v:
The Cryosphere, Vol 16, Pp 1469-1482 (2022)
Basal melt of ice shelves is a key factor governing discharge of ice from the Antarctic Ice Sheet as a result of its effects on buttressing. Here, we use radio echo sounding to determine the spatial variability of the basal melt rate of the southern
Externí odkaz:
https://doaj.org/article/c8adc12bf3354e3398435f5084f10799
Publikováno v:
Annals of Glaciology, Vol 62, Pp 233-249 (2021)
During the 2018/19 Antarctic field season, the British Antarctic Survey (BAS) Basal conditions on Rutford Ice Stream: BEd Access, Monitoring and Ice Sheet History’ (BEAMISH) project drilled three holes through the Rutford Ice Stream, West Antarctic
Externí odkaz:
https://doaj.org/article/9705e69e6941444287568401bcebd972
Autor:
A. M. Smith, P. G. D. Anker, K. W. Nicholls, K. Makinson, T. Murray, S. Rios-Costas, A. M. Brisbourne, D. A. Hodgson, R. Schlegel, S. Anandakrishnan
Publikováno v:
Annals of Glaciology, Vol 62, Pp 203-211 (2021)
Three holes were drilled to the bed of Rutford Ice Stream, through ice up to 2154 m thick, to investigate the basal processes and conditions associated with fast ice flow and the glacial history of the West Antarctic Ice Sheet. A narrative of the dri
Externí odkaz:
https://doaj.org/article/26e84130c0d9457f9b73935a230282aa
Autor:
Tore Hattermann, Keith W. Nicholls, Hartmut H. Hellmer, Peter E. D. Davis, Markus A. Janout, Svein Østerhus, Elisabeth Schlosser, Gerd Rohardt, Torsten Kanzow
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-11 (2021)
New data from five hot-water drilled boreholes show how atmospheric anomalies affect the circulation beneath Filchner-Ronne Ice Shelf on multi-year time scales. The apparent link of the dense water formation to remote teleconnections is an important
Externí odkaz:
https://doaj.org/article/e5f2af617f6e44d891c1a281e87c0b94