Change search
ReferencesLink to record
Permanent link

Direct link
Submarine landforms and ice-sheet flow in the Kvitøya Trough, northwestern Barents Sea
Show others and affiliations
2010 (English)In: Quaternary Science Reviews, ISSN 0277-3791, Vol. 29, no 25-26, 3545-3562 p.Article in journal (Refereed) Published
Abstract [en]

High-resolution geophysical and sediment core data are used to investigate the pattern and dynamics of former ice flow in Kvitøya Trough, northwestern Barents Sea. A new swath-bathymetric dataset identifies three types of submarine landform in the study area (streamlined landforms, meltwater channels and cavities, iceberg scours). Subglacially produced streamlined landforms provide a record of ice flow through Kvitøya Trough during the last glaciation. Flow directions are inferred from the orientations of streamlined landforms (drumlins, crag-and-tail features). Ice flowed northward for at least 135 km from an ice divide at the southern end of Kvitøya Trough. A large channel-cavity system incised into bedrock in the southern trough indicates that subglacial meltwater was present at the former ice-sheet base. Modest landform elongation ratios and a lack of mega-scale glacial lineations suggest that, although ice in Kvitøya Trough was melting at the bed and flowed faster than the likely thin and cold-based ice on adjacent banks, a major ice stream probably did not occupy the trough. Retreat was relatively rapid after 14–13.5 14C kyr B.P. and probably progressed via ice sheet-bed decoupling in response to rising sea level. There is little evidence for still stands during ice retreat or of ice-proximal deglacial sediments. Relict iceberg scours in present-day water depths of more than 350 m in the northern trough indicate that calving was an important mass loss mechanism during retreat.

Place, publisher, year, edition, pages
2010. Vol. 29, no 25-26, 3545-3562 p.
Keyword [en]
Arctic, Svalbard, glacial morphology, ice sheets
National Category
Earth and Related Environmental Sciences
Research subject
URN: urn:nbn:se:su:diva-47300DOI: 10.1016/j.quascirev.2010.08.015ISI: 000284724400015OAI: diva2:373557
Available from: 2010-12-07 Created: 2010-11-30 Last updated: 2011-11-21Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Jakobsson, Martin
By organisation
Department of Geological Sciences
In the same journal
Quaternary Science Reviews
Earth and Related Environmental Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 23 hits
ReferencesLink to record
Permanent link

Direct link