Altimetry-drived Antarctic Circumpolar Current fronts
An up-to-date map of the Antarctic Circumpolar Current (ACC) fronts is constructed from the latest version of mean dynamic topography from satellite altimetry (Park et al., 2019, Observations of the Antarctic Circumpolar Current over the Udintsev Fracture Zone, the narrowest choke point in the South...
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ftseanoe:oai:seanoe.org:59800 2023-11-12T04:07:50+01:00 Altimetry-drived Antarctic Circumpolar Current fronts Park, Young-hyang Durand, Isabelle North -35.0, South -75.0, East 180.0, West -180.0 2019-04-01 https://doi.org/10.17882/59800 https://www.seanoe.org/data/00486/59800/ unknown SEANOE doi:10.17882/59800 https://doi.org/10.17882/59800 https://www.seanoe.org/data/00486/59800/ CC-BY dataset 2019 ftseanoe https://doi.org/10.17882/59800 2023-11-01T17:24:19Z An up-to-date map of the Antarctic Circumpolar Current (ACC) fronts is constructed from the latest version of mean dynamic topography from satellite altimetry (Park et al., 2019, Observations of the Antarctic Circumpolar Current over the Udintsev Fracture Zone, the narrowest choke point in the Southern Ocean, JGR-Oceans, in review). These are derived from the 1/8°-resolution Mean Dynamic Topography (MDT) of Centre National d’Etudes Spatiales-Collect Localisation Satellites 2018 (CNES-CLS18) for the 1993-2012 reference period [Rio et al., The new CNES-CLS18 Mean Dynamic Topography solution, in preparation]. The narrowest ACC width in the Udintsev Fracture Zone (UFZ), with the strongest concentration of the three major ACC fronts within a limited distance as short as 170 km, about 40% narrower than that at Drake Passage. At 144°W, at the entrance of the UFZ, which lies between the Pacific-Antarctic Ridge (PAR) and its eastwardly-offset segment (offset PAR segment), there is a triple confluence of the Subantarctic Front (SAF), Polar Front (PF), and Southern ACC Front. Downstream of this longitude, the SAF progressively meanders northward over the relatively shallow offset PAR segment before channeling through the Eltanin Fracture Zone, thus diverging from the PF which proceeds through the UFZ. Dataset Antarc* Antarctic Drake Passage Southern Ocean SEANOE (Sea scientific open data publication) Antarctic Southern Ocean The Antarctic Drake Passage Pacific Eltanin Fracture Zone ENVELOPE(-130.000,-130.000,-54.000,-54.000) Udintsev Fracture Zone ENVELOPE(-145.000,-145.000,-57.000,-57.000) |
institution |
Open Polar |
collection |
SEANOE (Sea scientific open data publication) |
op_collection_id |
ftseanoe |
language |
unknown |
description |
An up-to-date map of the Antarctic Circumpolar Current (ACC) fronts is constructed from the latest version of mean dynamic topography from satellite altimetry (Park et al., 2019, Observations of the Antarctic Circumpolar Current over the Udintsev Fracture Zone, the narrowest choke point in the Southern Ocean, JGR-Oceans, in review). These are derived from the 1/8°-resolution Mean Dynamic Topography (MDT) of Centre National d’Etudes Spatiales-Collect Localisation Satellites 2018 (CNES-CLS18) for the 1993-2012 reference period [Rio et al., The new CNES-CLS18 Mean Dynamic Topography solution, in preparation]. The narrowest ACC width in the Udintsev Fracture Zone (UFZ), with the strongest concentration of the three major ACC fronts within a limited distance as short as 170 km, about 40% narrower than that at Drake Passage. At 144°W, at the entrance of the UFZ, which lies between the Pacific-Antarctic Ridge (PAR) and its eastwardly-offset segment (offset PAR segment), there is a triple confluence of the Subantarctic Front (SAF), Polar Front (PF), and Southern ACC Front. Downstream of this longitude, the SAF progressively meanders northward over the relatively shallow offset PAR segment before channeling through the Eltanin Fracture Zone, thus diverging from the PF which proceeds through the UFZ. |
format |
Dataset |
author |
Park, Young-hyang Durand, Isabelle |
spellingShingle |
Park, Young-hyang Durand, Isabelle Altimetry-drived Antarctic Circumpolar Current fronts |
author_facet |
Park, Young-hyang Durand, Isabelle |
author_sort |
Park, Young-hyang |
title |
Altimetry-drived Antarctic Circumpolar Current fronts |
title_short |
Altimetry-drived Antarctic Circumpolar Current fronts |
title_full |
Altimetry-drived Antarctic Circumpolar Current fronts |
title_fullStr |
Altimetry-drived Antarctic Circumpolar Current fronts |
title_full_unstemmed |
Altimetry-drived Antarctic Circumpolar Current fronts |
title_sort |
altimetry-drived antarctic circumpolar current fronts |
publisher |
SEANOE |
publishDate |
2019 |
url |
https://doi.org/10.17882/59800 https://www.seanoe.org/data/00486/59800/ |
op_coverage |
North -35.0, South -75.0, East 180.0, West -180.0 |
long_lat |
ENVELOPE(-130.000,-130.000,-54.000,-54.000) ENVELOPE(-145.000,-145.000,-57.000,-57.000) |
geographic |
Antarctic Southern Ocean The Antarctic Drake Passage Pacific Eltanin Fracture Zone Udintsev Fracture Zone |
geographic_facet |
Antarctic Southern Ocean The Antarctic Drake Passage Pacific Eltanin Fracture Zone Udintsev Fracture Zone |
genre |
Antarc* Antarctic Drake Passage Southern Ocean |
genre_facet |
Antarc* Antarctic Drake Passage Southern Ocean |
op_relation |
doi:10.17882/59800 https://doi.org/10.17882/59800 https://www.seanoe.org/data/00486/59800/ |
op_rights |
CC-BY |
op_doi |
https://doi.org/10.17882/59800 |
_version_ |
1782328357839437824 |