Multibeam bathymetry and depositional environment in Kongsfjorden and Krossfjorden, western Spitsbergen, 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 km(2) outcrop of bedrock, with a thin (<10 m) sediment co...
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ftuhipublicatio:oai:pure.atira.dk:publications/f6be3c08-1b57-4f58-b688-3d9e47171fb5 2024-02-04T10:00:37+01:00 Multibeam bathymetry and depositional environment in Kongsfjorden and Krossfjorden, western Spitsbergen, Svalbard. Howe, John Moreton, Steven Morri, Clara Morris, Peter 2003 https://pure.uhi.ac.uk/en/publications/f6be3c08-1b57-4f58-b688-3d9e47171fb5 https://doi.org/10.1111/j.1751-8369.2003.tb00114.x eng eng info:eu-repo/semantics/restrictedAccess Howe , J , Moreton , S , Morri , C & Morris , P 2003 , ' Multibeam bathymetry and depositional environment in Kongsfjorden and Krossfjorden, western Spitsbergen, Svalbard. ' , POLAR RES , no. 2 , pp. 301-316 . https://doi.org/10.1111/j.1751-8369.2003.tb00114.x EXTENT Geosciences Multidisciplinary Environmental Sciences NORTHWEST SPITSBERGEN Oceanography ICE-SHEET FACIES GLACIAL MAXIMUM Ecology Geography Physical HISTORY CONTINENTAL-MARGIN SEDIMENTATION FJORDS article 2003 ftuhipublicatio https://doi.org/10.1111/j.1751-8369.2003.tb00114.x 2024-01-11T23:20:43Z 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 km(2) 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 Ice Sheet Kongsfjord* Kongsfjorden Krossfjord* Svalbard Spitsbergen University of the Highlands and Islands: Research Database of UHI Svalbard Kronebreen ENVELOPE(13.333,13.333,78.833,78.833) Krossfjorden ENVELOPE(11.742,11.742,79.141,79.141) Polar Research 22 2 301 316 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
EXTENT Geosciences Multidisciplinary Environmental Sciences NORTHWEST SPITSBERGEN Oceanography ICE-SHEET FACIES GLACIAL MAXIMUM Ecology Geography Physical HISTORY CONTINENTAL-MARGIN SEDIMENTATION FJORDS |
spellingShingle |
EXTENT Geosciences Multidisciplinary Environmental Sciences NORTHWEST SPITSBERGEN Oceanography ICE-SHEET FACIES GLACIAL MAXIMUM Ecology Geography Physical HISTORY CONTINENTAL-MARGIN SEDIMENTATION FJORDS Howe, John Moreton, Steven Morri, Clara Morris, Peter Multibeam bathymetry and depositional environment in Kongsfjorden and Krossfjorden, western Spitsbergen, Svalbard. |
topic_facet |
EXTENT Geosciences Multidisciplinary Environmental Sciences NORTHWEST SPITSBERGEN Oceanography ICE-SHEET FACIES GLACIAL MAXIMUM Ecology Geography Physical HISTORY CONTINENTAL-MARGIN SEDIMENTATION FJORDS |
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 km(2) 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, John Moreton, Steven Morri, Clara Morris, Peter |
author_facet |
Howe, John Moreton, Steven Morri, Clara Morris, Peter |
author_sort |
Howe, John |
title |
Multibeam bathymetry and depositional environment in Kongsfjorden and Krossfjorden, western Spitsbergen, Svalbard. |
title_short |
Multibeam bathymetry and depositional environment in Kongsfjorden and Krossfjorden, western Spitsbergen, Svalbard. |
title_full |
Multibeam bathymetry and depositional environment in Kongsfjorden and Krossfjorden, western Spitsbergen, Svalbard. |
title_fullStr |
Multibeam bathymetry and depositional environment in Kongsfjorden and Krossfjorden, western Spitsbergen, Svalbard. |
title_full_unstemmed |
Multibeam bathymetry and depositional environment in Kongsfjorden and Krossfjorden, western Spitsbergen, Svalbard. |
title_sort |
multibeam bathymetry and depositional environment in kongsfjorden and krossfjorden, western spitsbergen, svalbard. |
publishDate |
2003 |
url |
https://pure.uhi.ac.uk/en/publications/f6be3c08-1b57-4f58-b688-3d9e47171fb5 https://doi.org/10.1111/j.1751-8369.2003.tb00114.x |
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 Ice Sheet Kongsfjord* Kongsfjorden Krossfjord* Svalbard Spitsbergen |
genre_facet |
glacier Ice Sheet Kongsfjord* Kongsfjorden Krossfjord* Svalbard Spitsbergen |
op_source |
Howe , J , Moreton , S , Morri , C & Morris , P 2003 , ' Multibeam bathymetry and depositional environment in Kongsfjorden and Krossfjorden, western Spitsbergen, Svalbard. ' , POLAR RES , no. 2 , pp. 301-316 . https://doi.org/10.1111/j.1751-8369.2003.tb00114.x |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/j.1751-8369.2003.tb00114.x |
container_title |
Polar Research |
container_volume |
22 |
container_issue |
2 |
container_start_page |
301 |
op_container_end_page |
316 |
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1789966000207167488 |