Late Weichselian depositional processes, £uxes, and sediment volumes on the margins of the Norwegian Sea (62^75‡N)
Quaternary continental margin sedimentation in the Norwegian^Greenland Sea has been a response to a combination of tectonic, oceanographic, and glacial activity. Using geophysical survey data (6.5 kHz side-scan sonar and 3.5 kHz penetration echo sounding), in association with bathymetric datasets, t...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.596.2647 2023-05-15T16:21:31+02:00 Late Weichselian depositional processes, £uxes, and sediment volumes on the margins of the Norwegian Sea (62^75‡N) J. Taylor J. A. Dowdeswell M. J. Siegert The Pennsylvania State University CiteSeerX Archives 2002 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.596.2647 http://www.cpom.org/research/mjs-marine1.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.596.2647 http://www.cpom.org/research/mjs-marine1.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.cpom.org/research/mjs-marine1.pdf Quaternary glaciation Norwegian Sea ice-sheet numerical modelling sediment budgets text 2002 ftciteseerx 2016-01-08T13:44:53Z Quaternary continental margin sedimentation in the Norwegian^Greenland Sea has been a response to a combination of tectonic, oceanographic, and glacial activity. Using geophysical survey data (6.5 kHz side-scan sonar and 3.5 kHz penetration echo sounding), in association with bathymetric datasets, the magnitude and frequency of the main forms of margin sedimentation into the Lofoten and Norwegian Basins of the Norwegian Sea during the Late Weichselian and Holocene are estimated. By comparing these geophysically determined estimates of sediment fluxes with numerically modelled ice-sheet sediment delivery, the role of ice-sheets in shaping the processes acting on this margin is assessed. Sediment flux at the shelf edge during the Late Quaternary is dominated by ice-sheet delivery of sediments, focused at the mouths of fast-flowing ice streams formed in bathymetric troughs. Interglacials are, by contrast, characterised by comparatively little sediment accumulation. Submarine fans, at the margins of cross-shelf troughs, are major depocentres on this glacier-influenced margin. However, occasional large-scale failures of the continental slope account for approximately 75 % of the basin sediment accumulation during the past 30 000 yr, by eroding substantial quantities of pre-Quaternary deposits. Trough mouth fan and a combination of hemipelagic and glacimarine processes are responsible for the accumulation of the remaining 15 % and 7 % of basin sediments Text glacier Greenland Greenland Sea Ice Sheet Lofoten Norwegian Sea Sea ice Unknown Greenland Lofoten Norwegian Sea |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
Quaternary glaciation Norwegian Sea ice-sheet numerical modelling sediment budgets |
spellingShingle |
Quaternary glaciation Norwegian Sea ice-sheet numerical modelling sediment budgets J. Taylor J. A. Dowdeswell M. J. Siegert Late Weichselian depositional processes, £uxes, and sediment volumes on the margins of the Norwegian Sea (62^75‡N) |
topic_facet |
Quaternary glaciation Norwegian Sea ice-sheet numerical modelling sediment budgets |
description |
Quaternary continental margin sedimentation in the Norwegian^Greenland Sea has been a response to a combination of tectonic, oceanographic, and glacial activity. Using geophysical survey data (6.5 kHz side-scan sonar and 3.5 kHz penetration echo sounding), in association with bathymetric datasets, the magnitude and frequency of the main forms of margin sedimentation into the Lofoten and Norwegian Basins of the Norwegian Sea during the Late Weichselian and Holocene are estimated. By comparing these geophysically determined estimates of sediment fluxes with numerically modelled ice-sheet sediment delivery, the role of ice-sheets in shaping the processes acting on this margin is assessed. Sediment flux at the shelf edge during the Late Quaternary is dominated by ice-sheet delivery of sediments, focused at the mouths of fast-flowing ice streams formed in bathymetric troughs. Interglacials are, by contrast, characterised by comparatively little sediment accumulation. Submarine fans, at the margins of cross-shelf troughs, are major depocentres on this glacier-influenced margin. However, occasional large-scale failures of the continental slope account for approximately 75 % of the basin sediment accumulation during the past 30 000 yr, by eroding substantial quantities of pre-Quaternary deposits. Trough mouth fan and a combination of hemipelagic and glacimarine processes are responsible for the accumulation of the remaining 15 % and 7 % of basin sediments |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
J. Taylor J. A. Dowdeswell M. J. Siegert |
author_facet |
J. Taylor J. A. Dowdeswell M. J. Siegert |
author_sort |
J. Taylor |
title |
Late Weichselian depositional processes, £uxes, and sediment volumes on the margins of the Norwegian Sea (62^75‡N) |
title_short |
Late Weichselian depositional processes, £uxes, and sediment volumes on the margins of the Norwegian Sea (62^75‡N) |
title_full |
Late Weichselian depositional processes, £uxes, and sediment volumes on the margins of the Norwegian Sea (62^75‡N) |
title_fullStr |
Late Weichselian depositional processes, £uxes, and sediment volumes on the margins of the Norwegian Sea (62^75‡N) |
title_full_unstemmed |
Late Weichselian depositional processes, £uxes, and sediment volumes on the margins of the Norwegian Sea (62^75‡N) |
title_sort |
late weichselian depositional processes, £uxes, and sediment volumes on the margins of the norwegian sea (62^75‡n) |
publishDate |
2002 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.596.2647 http://www.cpom.org/research/mjs-marine1.pdf |
geographic |
Greenland Lofoten Norwegian Sea |
geographic_facet |
Greenland Lofoten Norwegian Sea |
genre |
glacier Greenland Greenland Sea Ice Sheet Lofoten Norwegian Sea Sea ice |
genre_facet |
glacier Greenland Greenland Sea Ice Sheet Lofoten Norwegian Sea Sea ice |
op_source |
http://www.cpom.org/research/mjs-marine1.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.596.2647 http://www.cpom.org/research/mjs-marine1.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766009528642437120 |