Late Quaternary sedimentary processes in the central Arctic Ocean inferred from geophysical mapping
Cryospheric events in the Arctic Ocean have been largely studied through the imprints of ice sheets, ice shelves and icebergs in the seafloor morphology and sediment stratigraphy. Subglacial morphologies have been identified in the shallowest regions of the Arctic Ocean, up to 1200 m water depth, re...
Published in: | Geomorphology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2020
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Online Access: | https://pure.au.dk/portal/da/publications/late-quaternary-sedimentary-processes-in-the-central-arctic-ocean-inferred-from-geophysical-mapping(b9e5a663-6c44-43cc-a7b1-c4af138afe1a).html https://doi.org/10.1016/j.geomorph.2020.107309 https://pure.au.dk/ws/files/224100565/1_s2.0_S0169555X20302828_main.pdf http://www.scopus.com/inward/record.url?scp=85089884382&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/b9e5a663-6c44-43cc-a7b1-c4af138afe1a 2023-05-15T13:22:44+02:00 Late Quaternary sedimentary processes in the central Arctic Ocean inferred from geophysical mapping Pérez, Lara F. Jakobsson, Martin Funck, Thomas Andresen, Katrine Juul Nielsen, Tove O'Regan, Matt Mørk, Finn 2020 application/pdf https://pure.au.dk/portal/da/publications/late-quaternary-sedimentary-processes-in-the-central-arctic-ocean-inferred-from-geophysical-mapping(b9e5a663-6c44-43cc-a7b1-c4af138afe1a).html https://doi.org/10.1016/j.geomorph.2020.107309 https://pure.au.dk/ws/files/224100565/1_s2.0_S0169555X20302828_main.pdf http://www.scopus.com/inward/record.url?scp=85089884382&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Pérez , L F , Jakobsson , M , Funck , T , Andresen , K J , Nielsen , T , O'Regan , M & Mørk , F 2020 , ' Late Quaternary sedimentary processes in the central Arctic Ocean inferred from geophysical mapping ' , Geomorphology , vol. 369 , 107309 . https://doi.org/10.1016/j.geomorph.2020.107309 Arctic Ocean Internal waves Mass transport deposits Sediment waves article 2020 ftuniaarhuspubl https://doi.org/10.1016/j.geomorph.2020.107309 2022-11-23T23:56:12Z Cryospheric events in the Arctic Ocean have been largely studied through the imprints of ice sheets, ice shelves and icebergs in the seafloor morphology and sediment stratigraphy. Subglacial morphologies have been identified in the shallowest regions of the Arctic Ocean, up to 1200 m water depth, revealing the extent and dynamics of Arctic ice sheets during the last glacial periods. However, less attention has been given to sedimentary features imaged in the vicinity of the ice-grounded areas. Detailed interpretation of the sparse available swath bathymetry and sub-bottom profiles from the Lomonosov Ridge and the Amundsen Basin shows the occurrence of mass transport deposits (MTDs) and sediment waves in the central Arctic Ocean. The waxing and waning ice sheets and shelves in the Arctic Ocean have influenced the distribution of MTDs in the vicinity of grounding-ice areas, i.e. along the crest of Lomonosov Ridge. Due to the potential of Arctic sediments to hold gas hydrates, their destabilization should not be ruled out as trigger for sediment instability. Sediment waves formed by the interaction of internal waves that propagate along water mass interfaces with the bathymetric barrier of Lomonosov Ridge. This work describes the distribution and formation mechanisms of MTDs and sediment waves in the central Arctic Ocean in relation to grounding ice and internal waves between water masses respectively. The distribution of these features provides new insight into past cryospheric and oceanographic conditions of the central Arctic Ocean. Article in Journal/Newspaper amundsen basin Arctic Arctic Arctic Ocean Ice Shelves Iceberg* Lomonosov Ridge Aarhus University: Research Amundsen Basin ENVELOPE(74.000,74.000,87.000,87.000) Arctic Arctic Ocean Geomorphology 369 107309 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Arctic Ocean Internal waves Mass transport deposits Sediment waves |
spellingShingle |
Arctic Ocean Internal waves Mass transport deposits Sediment waves Pérez, Lara F. Jakobsson, Martin Funck, Thomas Andresen, Katrine Juul Nielsen, Tove O'Regan, Matt Mørk, Finn Late Quaternary sedimentary processes in the central Arctic Ocean inferred from geophysical mapping |
topic_facet |
Arctic Ocean Internal waves Mass transport deposits Sediment waves |
description |
Cryospheric events in the Arctic Ocean have been largely studied through the imprints of ice sheets, ice shelves and icebergs in the seafloor morphology and sediment stratigraphy. Subglacial morphologies have been identified in the shallowest regions of the Arctic Ocean, up to 1200 m water depth, revealing the extent and dynamics of Arctic ice sheets during the last glacial periods. However, less attention has been given to sedimentary features imaged in the vicinity of the ice-grounded areas. Detailed interpretation of the sparse available swath bathymetry and sub-bottom profiles from the Lomonosov Ridge and the Amundsen Basin shows the occurrence of mass transport deposits (MTDs) and sediment waves in the central Arctic Ocean. The waxing and waning ice sheets and shelves in the Arctic Ocean have influenced the distribution of MTDs in the vicinity of grounding-ice areas, i.e. along the crest of Lomonosov Ridge. Due to the potential of Arctic sediments to hold gas hydrates, their destabilization should not be ruled out as trigger for sediment instability. Sediment waves formed by the interaction of internal waves that propagate along water mass interfaces with the bathymetric barrier of Lomonosov Ridge. This work describes the distribution and formation mechanisms of MTDs and sediment waves in the central Arctic Ocean in relation to grounding ice and internal waves between water masses respectively. The distribution of these features provides new insight into past cryospheric and oceanographic conditions of the central Arctic Ocean. |
format |
Article in Journal/Newspaper |
author |
Pérez, Lara F. Jakobsson, Martin Funck, Thomas Andresen, Katrine Juul Nielsen, Tove O'Regan, Matt Mørk, Finn |
author_facet |
Pérez, Lara F. Jakobsson, Martin Funck, Thomas Andresen, Katrine Juul Nielsen, Tove O'Regan, Matt Mørk, Finn |
author_sort |
Pérez, Lara F. |
title |
Late Quaternary sedimentary processes in the central Arctic Ocean inferred from geophysical mapping |
title_short |
Late Quaternary sedimentary processes in the central Arctic Ocean inferred from geophysical mapping |
title_full |
Late Quaternary sedimentary processes in the central Arctic Ocean inferred from geophysical mapping |
title_fullStr |
Late Quaternary sedimentary processes in the central Arctic Ocean inferred from geophysical mapping |
title_full_unstemmed |
Late Quaternary sedimentary processes in the central Arctic Ocean inferred from geophysical mapping |
title_sort |
late quaternary sedimentary processes in the central arctic ocean inferred from geophysical mapping |
publishDate |
2020 |
url |
https://pure.au.dk/portal/da/publications/late-quaternary-sedimentary-processes-in-the-central-arctic-ocean-inferred-from-geophysical-mapping(b9e5a663-6c44-43cc-a7b1-c4af138afe1a).html https://doi.org/10.1016/j.geomorph.2020.107309 https://pure.au.dk/ws/files/224100565/1_s2.0_S0169555X20302828_main.pdf http://www.scopus.com/inward/record.url?scp=85089884382&partnerID=8YFLogxK |
long_lat |
ENVELOPE(74.000,74.000,87.000,87.000) |
geographic |
Amundsen Basin Arctic Arctic Ocean |
geographic_facet |
Amundsen Basin Arctic Arctic Ocean |
genre |
amundsen basin Arctic Arctic Arctic Ocean Ice Shelves Iceberg* Lomonosov Ridge |
genre_facet |
amundsen basin Arctic Arctic Arctic Ocean Ice Shelves Iceberg* Lomonosov Ridge |
op_source |
Pérez , L F , Jakobsson , M , Funck , T , Andresen , K J , Nielsen , T , O'Regan , M & Mørk , F 2020 , ' Late Quaternary sedimentary processes in the central Arctic Ocean inferred from geophysical mapping ' , Geomorphology , vol. 369 , 107309 . https://doi.org/10.1016/j.geomorph.2020.107309 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.geomorph.2020.107309 |
container_title |
Geomorphology |
container_volume |
369 |
container_start_page |
107309 |
_version_ |
1766366634662952960 |