Multibeam bathymetry and the depositional environments of Kongsfjorden and Krossjorden, western Spitzbergen, Svalbard
Kongsfjorden and Krossfjorden are two ice-proximal fjords on the western coast of Spitsbergen which have been surveyed using multibeam bathymetry, sub-bottom profiling and gravity coring. Central and outer Kongsfjorden is dominated by a 30 km2 outcrop of bedrock, with a thin (< 10 m) sediment cov...
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ftuglasgow:oai:eprints.gla.ac.uk:257 2023-05-15T16:22:18+02:00 Multibeam bathymetry and the depositional environments of Kongsfjorden and Krossjorden, western Spitzbergen, Svalbard Howe, J.A. Moreton, S.G. Morri, C. Morris, P. 2003 http://eprints.gla.ac.uk/257/ unknown Co-Action Publishing Howe, J.A., Moreton, S.G. <http://eprints.gla.ac.uk/view/author/11570.html> , Morri, C. and Morris, P. (2003) Multibeam bathymetry and the depositional environments of Kongsfjorden and Krossjorden, western Spitzbergen, Svalbard. Polar Research <http://eprints.gla.ac.uk/view/journal_volume/Polar_Research.html>, 22(2), pp. 301-316. QE Geology Articles PeerReviewed 2003 ftuglasgow 2021-09-23T22:09:20Z Kongsfjorden and Krossfjorden are two ice-proximal fjords on the western coast of Spitsbergen which have been surveyed using multibeam bathymetry, sub-bottom profiling and gravity coring. Central and outer Kongsfjorden is dominated by a 30 km2 outcrop of bedrock, with a thin (< 10 m) sediment cover. The bedrock displays a relict sub-glacial, ice-scoured topography produced during the glacial re-advances of the Weichselian (20 Ky BP) and again during the last major Holocene re-advance of the Little Ice Age (550- 200 yrs BP). Drumlins and glacial flutes are common across the floor of Kongsfjorden, with lengths of 1.5-2.5 km and widths of <100 m, rising up to 10 m in water depths of <100 m. This topography is smoothed by bottom currents from the wind-driven forcing of surface waters. The flow is counter-clockwise, matching boundary layer movement under the influence of Coriolis force. Both fjords are characterized by a variable acoustic character, based on sub-bottom profile data. The deepest basins are dominated by parallel, well-laminated reflectors and an irregular-transparent acoustic character indicating the presence of Holocene-age fine-grained sediments up to 30 m thick. A parallel, irregular-transparent acoustic character with waveform morphology in inner Kongsfjorden is interpreted as moraines, originating from the 1948 and 1869 surges of Kronebreen glacier. Mass-flows are common on the flanks of topographic highs as acoustically chaotic-transparent lensoid and wedge-shaped reflectors. The sediments of outer and central Kongsfjorden are characterized by bioturbated, gas-rich homogeneous muds interpreted as being the result of the settling of fine-grained sediment and particulate suspensions. Article in Journal/Newspaper glacier Kongsfjord* Kongsfjorden Krossfjord* Polar Research Spitzbergen Svalbard Spitsbergen University of Glasgow: Enlighten - Publications Svalbard Kronebreen ENVELOPE(13.333,13.333,78.833,78.833) Krossfjorden ENVELOPE(11.742,11.742,79.141,79.141) |
institution |
Open Polar |
collection |
University of Glasgow: Enlighten - Publications |
op_collection_id |
ftuglasgow |
language |
unknown |
topic |
QE Geology |
spellingShingle |
QE Geology Howe, J.A. Moreton, S.G. Morri, C. Morris, P. Multibeam bathymetry and the depositional environments of Kongsfjorden and Krossjorden, western Spitzbergen, Svalbard |
topic_facet |
QE Geology |
description |
Kongsfjorden and Krossfjorden are two ice-proximal fjords on the western coast of Spitsbergen which have been surveyed using multibeam bathymetry, sub-bottom profiling and gravity coring. Central and outer Kongsfjorden is dominated by a 30 km2 outcrop of bedrock, with a thin (< 10 m) sediment cover. The bedrock displays a relict sub-glacial, ice-scoured topography produced during the glacial re-advances of the Weichselian (20 Ky BP) and again during the last major Holocene re-advance of the Little Ice Age (550- 200 yrs BP). Drumlins and glacial flutes are common across the floor of Kongsfjorden, with lengths of 1.5-2.5 km and widths of <100 m, rising up to 10 m in water depths of <100 m. This topography is smoothed by bottom currents from the wind-driven forcing of surface waters. The flow is counter-clockwise, matching boundary layer movement under the influence of Coriolis force. Both fjords are characterized by a variable acoustic character, based on sub-bottom profile data. The deepest basins are dominated by parallel, well-laminated reflectors and an irregular-transparent acoustic character indicating the presence of Holocene-age fine-grained sediments up to 30 m thick. A parallel, irregular-transparent acoustic character with waveform morphology in inner Kongsfjorden is interpreted as moraines, originating from the 1948 and 1869 surges of Kronebreen glacier. Mass-flows are common on the flanks of topographic highs as acoustically chaotic-transparent lensoid and wedge-shaped reflectors. The sediments of outer and central Kongsfjorden are characterized by bioturbated, gas-rich homogeneous muds interpreted as being the result of the settling of fine-grained sediment and particulate suspensions. |
format |
Article in Journal/Newspaper |
author |
Howe, J.A. Moreton, S.G. Morri, C. Morris, P. |
author_facet |
Howe, J.A. Moreton, S.G. Morri, C. Morris, P. |
author_sort |
Howe, J.A. |
title |
Multibeam bathymetry and the depositional environments of Kongsfjorden and Krossjorden, western Spitzbergen, Svalbard |
title_short |
Multibeam bathymetry and the depositional environments of Kongsfjorden and Krossjorden, western Spitzbergen, Svalbard |
title_full |
Multibeam bathymetry and the depositional environments of Kongsfjorden and Krossjorden, western Spitzbergen, Svalbard |
title_fullStr |
Multibeam bathymetry and the depositional environments of Kongsfjorden and Krossjorden, western Spitzbergen, Svalbard |
title_full_unstemmed |
Multibeam bathymetry and the depositional environments of Kongsfjorden and Krossjorden, western Spitzbergen, Svalbard |
title_sort |
multibeam bathymetry and the depositional environments of kongsfjorden and krossjorden, western spitzbergen, svalbard |
publisher |
Co-Action Publishing |
publishDate |
2003 |
url |
http://eprints.gla.ac.uk/257/ |
long_lat |
ENVELOPE(13.333,13.333,78.833,78.833) ENVELOPE(11.742,11.742,79.141,79.141) |
geographic |
Svalbard Kronebreen Krossfjorden |
geographic_facet |
Svalbard Kronebreen Krossfjorden |
genre |
glacier Kongsfjord* Kongsfjorden Krossfjord* Polar Research Spitzbergen Svalbard Spitsbergen |
genre_facet |
glacier Kongsfjord* Kongsfjorden Krossfjord* Polar Research Spitzbergen Svalbard Spitsbergen |
op_relation |
Howe, J.A., Moreton, S.G. <http://eprints.gla.ac.uk/view/author/11570.html> , Morri, C. and Morris, P. (2003) Multibeam bathymetry and the depositional environments of Kongsfjorden and Krossjorden, western Spitzbergen, Svalbard. Polar Research <http://eprints.gla.ac.uk/view/journal_volume/Polar_Research.html>, 22(2), pp. 301-316. |
_version_ |
1766010257057775616 |