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...
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ftnerc:oai:nora.nerc.ac.uk:527806 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 J. Nielsen, Tove O'Regan, Matt Mørk, Finn 2020-11-15 text http://nora.nerc.ac.uk/id/eprint/527806/ https://nora.nerc.ac.uk/id/eprint/527806/1/1-s2.0-S0169555X20302828-main.pdf https://www.sciencedirect.com/science/article/pii/S0169555X20302828 en eng Elsevier https://nora.nerc.ac.uk/id/eprint/527806/1/1-s2.0-S0169555X20302828-main.pdf Pérez, Lara F. orcid:0000-0002-6229-4564 Jakobsson, Martin; Funck, Thomas; Andresen, Katrine J.; Nielsen, Tove; O'Regan, Matt; Mørk, Finn. 2020 Late Quaternary sedimentary processes in the central Arctic Ocean inferred from geophysical mapping. Geomorphology, 369, 107309. 15, pp. https://doi.org/10.1016/j.geomorph.2020.107309 <https://doi.org/10.1016/j.geomorph.2020.107309> cc_by_4 CC-BY Publication - Article PeerReviewed 2020 ftnerc https://doi.org/10.1016/j.geomorph.2020.107309 2023-02-04T19:50:43Z 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 Natural Environment Research Council: NERC Open Research Archive Arctic Arctic Ocean Amundsen Basin ENVELOPE(74.000,74.000,87.000,87.000) Geomorphology 369 107309 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
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 J. Nielsen, Tove O'Regan, Matt Mørk, Finn |
spellingShingle |
Pérez, Lara F. Jakobsson, Martin Funck, Thomas Andresen, Katrine J. Nielsen, Tove O'Regan, Matt Mørk, Finn Late Quaternary sedimentary processes in the central Arctic Ocean inferred from geophysical mapping |
author_facet |
Pérez, Lara F. Jakobsson, Martin Funck, Thomas Andresen, Katrine J. 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 |
publisher |
Elsevier |
publishDate |
2020 |
url |
http://nora.nerc.ac.uk/id/eprint/527806/ https://nora.nerc.ac.uk/id/eprint/527806/1/1-s2.0-S0169555X20302828-main.pdf https://www.sciencedirect.com/science/article/pii/S0169555X20302828 |
long_lat |
ENVELOPE(74.000,74.000,87.000,87.000) |
geographic |
Arctic Arctic Ocean Amundsen Basin |
geographic_facet |
Arctic Arctic Ocean Amundsen Basin |
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_relation |
https://nora.nerc.ac.uk/id/eprint/527806/1/1-s2.0-S0169555X20302828-main.pdf Pérez, Lara F. orcid:0000-0002-6229-4564 Jakobsson, Martin; Funck, Thomas; Andresen, Katrine J.; Nielsen, Tove; O'Regan, Matt; Mørk, Finn. 2020 Late Quaternary sedimentary processes in the central Arctic Ocean inferred from geophysical mapping. Geomorphology, 369, 107309. 15, pp. https://doi.org/10.1016/j.geomorph.2020.107309 <https://doi.org/10.1016/j.geomorph.2020.107309> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1016/j.geomorph.2020.107309 |
container_title |
Geomorphology |
container_volume |
369 |
container_start_page |
107309 |
_version_ |
1766366628096770048 |