Zobrazeno 1 - 10
of 224
pro vyhledávání: '"DORTHE DAHL-JENSEN"'
Autor:
Daniela Jansen, Steven Franke, Catherine C. Bauer, Tobias Binder, Dorthe Dahl-Jensen, Jan Eichler, Olaf Eisen, Yuanbang Hu, Johanna Kerch, Maria-Gema Llorens, Heinrich Miller, Niklas Neckel, John Paden, Tamara de Riese, Till Sachau, Nicolas Stoll, Ilka Weikusat, Frank Wilhelms, Yu Zhang, Paul D. Bons
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-12 (2024)
Abstract Only a few localised ice streams drain most of the ice from the Greenland Ice Sheet. Thus, understanding ice stream behaviour and its temporal variability is crucially important to predict future sea-level change. The interior trunk of the 7
Externí odkaz:
https://doaj.org/article/b9fee28e06734e99a011c16d4228042e
Autor:
Benoît Lauzon, Luke Copland, Wesley Van Wychen, William Kochtitzky, Robert McNabb, Dorthe Dahl-Jensen
Publikováno v:
Journal of Glaciology, Vol 69, Pp 1333-1350 (2023)
This study provides the first comprehensive reconstruction of the dynamics of Iceberg Glacier, located on western Axel Heiberg Island, and reveals detailed observations of a complete surge for the first time in the Canadian Arctic. Historical aerial
Externí odkaz:
https://doaj.org/article/ab5d7835e7254a90a74154f09fdd93d4
Autor:
Pierre-Henri Blard, Marie Protin, Jean-Louis Tison, François Fripiat, Dorthe Dahl-Jensen, Jørgen P. Steffensen, William C. Mahaney, Paul R. Bierman, Andrew J. Christ, Lee B. Corbett, Vinciane Debaille, Thomas Rigaudier, Philippe Claeys, ASTER Team
Publikováno v:
Journal of Glaciology, Vol 69, Pp 1011-1029 (2023)
We present new data from the debris-rich basal ice layers of the NEEM ice core (NW Greenland). Using mineralogical observations, SEM imagery, geochemical data from silicates (meteoric 10Be, εNd, 87Sr/86Sr) and organic material (C/N, δ13C), we chara
Externí odkaz:
https://doaj.org/article/0745c87b00e3461894becead77175cc5
Autor:
Tamara Annina Gerber, David A. Lilien, Nicholas Mossor Rathmann, Steven Franke, Tun Jan Young, Fernando Valero-Delgado, M. Reza Ershadi, Reinhard Drews, Ole Zeising, Angelika Humbert, Nicolas Stoll, Ilka Weikusat, Aslak Grinsted, Christine Schøtt Hvidberg, Daniela Jansen, Heinrich Miller, Veit Helm, Daniel Steinhage, Charles O’Neill, John Paden, Siva Prasad Gogineni, Dorthe Dahl-Jensen, Olaf Eisen
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-12 (2023)
Abstract The dynamic mass loss of ice sheets constitutes one of the biggest uncertainties in projections of ice-sheet evolution. One central, understudied aspect of ice flow is how the bulk orientation of the crystal orientation fabric translates to
Externí odkaz:
https://doaj.org/article/f6cdc922dc5d4ebfb3c7320e213b5efe
Autor:
Aslak Grinsted, Christine S. Hvidberg, David A. Lilien, Nicholas M. Rathmann, Nanna B. Karlsson, Tamara Gerber, Helle Astrid Kjær, Paul Vallelonga, Dorthe Dahl-Jensen
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-4 (2022)
A new study finds that the North East Greenland ice stream is not as stable as previously thought and that this will affect its future evolution.
Externí odkaz:
https://doaj.org/article/2ead4269b9444a59ae8f9b93754e57e5
Autor:
Igor A. Dmitrenko, Sergei A. Kirillov, Bert Rudels, Nicolas-Xavier Geilfus, Jens Ehn, David G. Babb, David A. Lilien, Dorthe Dahl-Jensen
Publikováno v:
Frontiers in Marine Science, Vol 10 (2023)
The oceanography of the northern Canadian Arctic Archipelago (CAA) remains poorly studied. Here we present a unique set of conductivity–temperature–depth (CTD) and nitrate profiles collected in a fjord system around Axel Heiberg Island in the nor
Externí odkaz:
https://doaj.org/article/8f8c20f17d814d05bbac632ee014712f
Autor:
Seyedhamidreza Mojtabavi, Olaf Eisen, Steven Franke, Daniela Jansen, Daniel Steinhage, John Paden, Dorthe Dahl-Jensen, Ilka Weikusat, Jan Eichler, Frank Wilhelms
Publikováno v:
Journal of Glaciology, Vol 68, Pp 799-811 (2022)
During the past 20 years, multi-channel radar emerged as a key tool for deciphering an ice sheet's internal architecture. To assign ages to radar reflections and connect them over large areas in the ice sheet, the layer genesis has to be understood o
Externí odkaz:
https://doaj.org/article/3c7f436ec5da43ccb41fea72d2e50157
Autor:
Tsutomu Uchida, Wataru Shigeyama, Ikumi Oyabu, Kumiko Goto-Azuma, Fumio Nakazawa, Tomoyuki Homma, Kenji Kawamura, Dorthe Dahl-Jensen
Publikováno v:
Journal of Glaciology, Vol 68, Pp 547-556 (2022)
Tiny samples of ancient atmosphere in air bubbles within ice cores contain argon (Ar), which can be used to reconstruct past temperature changes. At a sufficient depth, the air bubbles are compressed by the overburden pressure under low temperature a
Externí odkaz:
https://doaj.org/article/1f9f64cf93ce4f65be21aea1a0014193
Autor:
Julien Westhoff, Nicolas Stoll, Steven Franke, Ilka Weikusat, Paul Bons, Johanna Kerch, Daniela Jansen, Sepp Kipfstuhl, Dorthe Dahl-Jensen
Publikováno v:
Annals of Glaciology, Vol 62, Pp 191-202 (2021)
Ever since the first deep ice cores were drilled, it has been a challenge to determine their original, in-situ orientation. In general, the orientation of an ice core is lost as the drill is free to rotate during transport to the surface. For shallow
Externí odkaz:
https://doaj.org/article/395687d7ac1444a387037b3bc574cedc
Autor:
Michael R. Prior-Jones, Elizabeth A. Bagshaw, Jonathan Lees, Lindsay Clare, Stephen Burrow, Mauro A. Werder, Nanna B. Karlsson, Dorthe Dahl-Jensen, Thomas R. Chudley, Poul Christoffersen, Jemma L. Wadham, Samuel H. Doyle, Bryn Hubbard
Publikováno v:
Journal of Glaciology, Vol 67, Pp 627-640 (2021)
Subglacial hydrological systems require innovative technological solutions to access and observe. Wireless sensor platforms can be used to collect and return data, but their performance in deep and fast-moving ice requires quantification. We report e
Externí odkaz:
https://doaj.org/article/0eb7c016b0f34ff1bb807832ccd69116