Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Steven Franke"'
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 16, Pp n/a-n/a (2024)
Abstract Radio‐echo sounding (RES) shows large‐scale englacial stratigraphic folds are ubiquitous in Greenland's ice sheet. However, there is no consensus yet on how these folds form. Here, we use the full‐Stokes code Underworld2 to simulate ic
Externí odkaz:
https://doaj.org/article/55100ba1a1654be090a43728021fea10
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:
Steven Franke, Michael Wolovick, Reinhard Drews, Daniela Jansen, Kenichi Matsuoka, Paul D. Bons
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 6, Pp n/a-n/a (2024)
Abstract Understanding the material properties and physical conditions of basal ice is crucial for a comprehensive understanding of Antarctic ice‐sheet dynamics. Yet, direct data are sparse and difficult to acquire. Here, we employ ultra‐wideband
Externí odkaz:
https://doaj.org/article/18222c2ee292489b95abd256234d9e9a
Autor:
Steven Franke, Paul D. Bons, Kyra Streng, Felicitas Mundel, Tobias Binder, Ilka Weikusat, Catherine C. Bauer, John D. Paden, Nils Dörr, Veit Helm, Daniel Steinhage, Olaf Eisen, Daniela Jansen
Publikováno v:
Scientific Data, Vol 10, Iss 1, Pp 1-15 (2023)
Abstract We present a dataset of reconstructed three-dimensional (3D) englacial stratigraphic horizons in northern Greenland. The data cover four different regions representing key ice-dynamic settings in Greenland: (i) the onset of Petermann Glacier
Externí odkaz:
https://doaj.org/article/df26c081126d4368a3c784af85f8990c
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:
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:
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:
Steven Franke, Daniela Jansen, Tobias Binder, Nils Dörr, Veit Helm, John Paden, Daniel Steinhage, Olaf Eisen
Publikováno v:
Annals of Glaciology, Vol 61, Pp 143-153 (2020)
The Northeast Greenland Ice Stream (NEGIS) is an important dynamic component for the total mass balance of the Greenland ice sheet, as it reaches up to the central divide and drains 12% of the ice sheet. The geometric boundary conditions and in parti
Externí odkaz:
https://doaj.org/article/17011c89551442029bae6505cf93c3dd
Autor:
David Armond Lilien, Niels Fabrin Nymand, Tamara Annina Gerber, Daniel Steinhage, Daniela Jansen, Laura Thomson, Madeline Myers, Steven Franke, Drew Taylor, Prasad Gogineni, Marcos Lemes, Bo Møllesøe Vinther, Dorthe Dahl-Jensen
Publikováno v:
Journal of Glaciology, Pp 1-16
Müller Ice Cap sits on Umingmat Nunaat (Axel Heiberg Island), Nunavut, Canada, ~ 80°N. Its high latitude and elevation suggest it experiences relatively little melt and preserves an undisturbed paleoclimate record. Here, we present a suite of field
Externí odkaz:
https://doaj.org/article/8b790be2af9440b4bb064e600028cc53
Autor:
Inka Koch, Reinhard Drews, Steven Franke, Daniela Jansen, Falk Marius Oraschewski, Leah Sophie Muhle, Vjeran Višnjević, Kenichi Matsuoka, Frank Pattyn, Olaf Eisen
Publikováno v:
Journal of Glaciology, Pp 1-19
Ice shelves, which regulate ice flow from the Antarctic ice sheet towards the ocean, are shaped by spatiotemporal patterns of surface accumulation, surface/basal melt and ice dynamics. Therefore, an ice dynamic and accumulation history are imprinted
Externí odkaz:
https://doaj.org/article/c4535e700ddb48fd8461982a7912cef0