Mixing processes in the Dotson Ice Shelf outflow ...
<!--!introduction!--> The Dotson Ice Shelf (DIS) shows high rates of basal melting in recent decades. Relatively warm ocean currents access the sub-ice shelf cavity and interact with the base of the ice shelf providing heat for its melting. The water mass transformation associated with the mix...
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GFZ German Research Centre for Geosciences
2023
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ftdatacite:10.57757/iugg23-0563 2023-06-11T04:11:18+02:00 Mixing processes in the Dotson Ice Shelf outflow ... Dotto, Tiago Hall, Rob Sheehan, Peter Damerell, Gillian Zheng, Yixi Boehme, Lars Stammerjohn, Sharon Heywood, Karen 2023 https://dx.doi.org/10.57757/iugg23-0563 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016919 unknown GFZ German Research Centre for Geosciences Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 ConferencePaper Oral Article 2023 ftdatacite https://doi.org/10.57757/iugg23-0563 2023-06-01T11:23:59Z <!--!introduction!--> The Dotson Ice Shelf (DIS) shows high rates of basal melting in recent decades. Relatively warm ocean currents access the sub-ice shelf cavity and interact with the base of the ice shelf providing heat for its melting. The water mass transformation associated with the mixture of warm water and meltwater creates buoyant plumes that shallow as they flow out from the cavity. Here, we show that high turbulent kinetic energy (TKE) dissipation rates (up to order 10 −7 W kg −1 ) and diapycnal eddy diffusivities (up to order 10 −2 m 2 s −1 ) are associated with the outflow current from DIS. Four high-resolution Vertical Microstructure Profile (VMP) and ship-based Acoustic Doppler Current Profiler (SADCP) sections were conducted in January and February 2022 at the western side of DIS spanning the outflow as it hugs the steep topographic slope. Near-bed TKE dissipations rates are elevated by up to 3 orders of magnitude and elevated mixing rates are also observed mid-water column around the ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... Conference Object Dotson Ice Shelf Ice Shelf DataCite Metadata Store (German National Library of Science and Technology) Dotson Ice Shelf ENVELOPE(-112.367,-112.367,-74.400,-74.400) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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description |
<!--!introduction!--> The Dotson Ice Shelf (DIS) shows high rates of basal melting in recent decades. Relatively warm ocean currents access the sub-ice shelf cavity and interact with the base of the ice shelf providing heat for its melting. The water mass transformation associated with the mixture of warm water and meltwater creates buoyant plumes that shallow as they flow out from the cavity. Here, we show that high turbulent kinetic energy (TKE) dissipation rates (up to order 10 −7 W kg −1 ) and diapycnal eddy diffusivities (up to order 10 −2 m 2 s −1 ) are associated with the outflow current from DIS. Four high-resolution Vertical Microstructure Profile (VMP) and ship-based Acoustic Doppler Current Profiler (SADCP) sections were conducted in January and February 2022 at the western side of DIS spanning the outflow as it hugs the steep topographic slope. Near-bed TKE dissipations rates are elevated by up to 3 orders of magnitude and elevated mixing rates are also observed mid-water column around the ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
format |
Conference Object |
author |
Dotto, Tiago Hall, Rob Sheehan, Peter Damerell, Gillian Zheng, Yixi Boehme, Lars Stammerjohn, Sharon Heywood, Karen |
spellingShingle |
Dotto, Tiago Hall, Rob Sheehan, Peter Damerell, Gillian Zheng, Yixi Boehme, Lars Stammerjohn, Sharon Heywood, Karen Mixing processes in the Dotson Ice Shelf outflow ... |
author_facet |
Dotto, Tiago Hall, Rob Sheehan, Peter Damerell, Gillian Zheng, Yixi Boehme, Lars Stammerjohn, Sharon Heywood, Karen |
author_sort |
Dotto, Tiago |
title |
Mixing processes in the Dotson Ice Shelf outflow ... |
title_short |
Mixing processes in the Dotson Ice Shelf outflow ... |
title_full |
Mixing processes in the Dotson Ice Shelf outflow ... |
title_fullStr |
Mixing processes in the Dotson Ice Shelf outflow ... |
title_full_unstemmed |
Mixing processes in the Dotson Ice Shelf outflow ... |
title_sort |
mixing processes in the dotson ice shelf outflow ... |
publisher |
GFZ German Research Centre for Geosciences |
publishDate |
2023 |
url |
https://dx.doi.org/10.57757/iugg23-0563 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016919 |
long_lat |
ENVELOPE(-112.367,-112.367,-74.400,-74.400) |
geographic |
Dotson Ice Shelf |
geographic_facet |
Dotson Ice Shelf |
genre |
Dotson Ice Shelf Ice Shelf |
genre_facet |
Dotson Ice Shelf Ice Shelf |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.57757/iugg23-0563 |
_version_ |
1768386267210317824 |