Fly-through movie for the reconstructed folds in the onset region of the Petermann Glacier, North Greenland
Fuente:
PANGAEA
Gespeichert in:
| Hauptverfasser: | , , , , , , , , , , |
|---|---|
| Format: | Dataset Open Access |
| Sprache: | en |
| Veröffentlicht: |
PANGAEA
2016
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1867171840122683392 |
|---|---|
| author | Bons, Paul D Jansen, Daniela Mundel, Felicitas Bauer, Catherine C Binder, Tobias Eisen, Olaf Jessell, Mark W Llorens, Maria-Gema Steinbach, Florian Steinhage, Daniel Weikusat, Ilka |
| author_facet | Bons, Paul D Jansen, Daniela Mundel, Felicitas Bauer, Catherine C Binder, Tobias Eisen, Olaf Jessell, Mark W Llorens, Maria-Gema Steinbach, Florian Steinhage, Daniel Weikusat, Ilka |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The increasing catalogue of high-quality ice-penetrating radar data provides a unique insight in the internal layering architecture of the Greenland ice sheet. The stratigraphy, an indicator of past deformation, highlights irregularities in ice flow and reveals large perturbations without obvious links to bedrock shape. In this work, to establish a new conceptual model for the formation process, we analysed the radar data at the onset of the Petermann Glacier, North Greenland, and created a three-dimensional model of several distinct stratigraphic layers. We demonstrate that the dominant structures are cylindrical folds sub-parallel to the ice flow. By numerical modelling, we show that these folds can be formed by lateral compression of mechanically anisotropic ice, while a general viscosity contrast between layers would not lead to folding for the same boundary conditions. We conclude that the folds primarily form by converging flow as the mechanically anisotropic ice is channelled towards the glacier. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_860074 |
| institution | PANGAEA |
| language | en |
| publishDate | 2016 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Fly-through movie for the reconstructed folds in the onset region of the Petermann Glacier, North Greenland Bons, Paul D Jansen, Daniela Mundel, Felicitas Bauer, Catherine C Binder, Tobias Eisen, Olaf Jessell, Mark W Llorens, Maria-Gema Steinbach, Florian Steinhage, Daniel Weikusat, Ilka North Greenland; Petermann_Glacier; RADAR; Radar profile The increasing catalogue of high-quality ice-penetrating radar data provides a unique insight in the internal layering architecture of the Greenland ice sheet. The stratigraphy, an indicator of past deformation, highlights irregularities in ice flow and reveals large perturbations without obvious links to bedrock shape. In this work, to establish a new conceptual model for the formation process, we analysed the radar data at the onset of the Petermann Glacier, North Greenland, and created a three-dimensional model of several distinct stratigraphic layers. We demonstrate that the dominant structures are cylindrical folds sub-parallel to the ice flow. By numerical modelling, we show that these folds can be formed by lateral compression of mechanically anisotropic ice, while a general viscosity contrast between layers would not lead to folding for the same boundary conditions. We conclude that the folds primarily form by converging flow as the mechanically anisotropic ice is channelled towards the glacier. |
| title | Fly-through movie for the reconstructed folds in the onset region of the Petermann Glacier, North Greenland |
| topic | North Greenland; Petermann_Glacier; RADAR; Radar profile |
| url | https://doi.org/10.1594/PANGAEA.860074 |