Exchange of water between the Ross Gyre and ACC assessed by Lagrangian particle tracking
To reach upwelling and downwelling zones deep within the Southern Ocean seasonal sea ice cover, water masses must move across the Antarctic Circumpolar Current and through current systems including the Ross Gyre, Weddell Gyre, and Antarctic Slope Current. In this study we focus our attention on the...
Published in: | Journal of Geophysical Research: Oceans |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley-Blackwell Publishing Inc.
2019
|
Subjects: | |
Online Access: | https://eprints.utas.edu.au/33256/ https://eprints.utas.edu.au/33256/1/137550%20-%20Exchange%20of%20water%20between%20the%20Ross%20Gyre%20and%20ACC%20assessed%20by%20Lagrangian.pdf |
id |
ftunivtasmania:oai:eprints.utas.edu.au:33256 |
---|---|
record_format |
openpolar |
spelling |
ftunivtasmania:oai:eprints.utas.edu.au:33256 2023-05-15T13:31:53+02:00 Exchange of water between the Ross Gyre and ACC assessed by Lagrangian particle tracking Roach, CJ Speer, K 2019 application/pdf https://eprints.utas.edu.au/33256/ https://eprints.utas.edu.au/33256/1/137550%20-%20Exchange%20of%20water%20between%20the%20Ross%20Gyre%20and%20ACC%20assessed%20by%20Lagrangian.pdf en eng Wiley-Blackwell Publishing Inc. https://eprints.utas.edu.au/33256/1/137550%20-%20Exchange%20of%20water%20between%20the%20Ross%20Gyre%20and%20ACC%20assessed%20by%20Lagrangian.pdf Roach, CJ orcid:0000-0002-1487-1363 and Speer, K 2019 , 'Exchange of water between the Ross Gyre and ACC assessed by Lagrangian particle tracking' , Journal of Geophysical Research: Oceans, vol. 124, no. 7 , pp. 4631-4643 , doi:10.1029/2018JC014845 <http://dx.doi.org/10.1029/2018JC014845>. Ross Gyre Southern Ocean upwelling zone downwelling zone Article PeerReviewed 2019 ftunivtasmania https://doi.org/10.1029/2018JC014845 2021-09-20T22:18:41Z To reach upwelling and downwelling zones deep within the Southern Ocean seasonal sea ice cover, water masses must move across the Antarctic Circumpolar Current and through current systems including the Ross Gyre, Weddell Gyre, and Antarctic Slope Current. In this study we focus our attention on the Lagrangian exchange between the Ross Gyre and surrounding current systems. We conducted numerical experiments using five-day 3-D velocity fields from the Southern Ocean State Estimate with a particle tracking package to identify pathways by which waters move from near the Antarctic coastal margins or Antarctic Circumpolar Current into the interior of the Ross Gyre, and to identify the time scales of variability associated with these pathways. Waters from near the Antarctic margins enter the Ross Gyre along the western and northern boundaries of gyre until the gyre separates from the Pacific-Antarctic Ridge near fracture zones. At this juncture, Antarctic Circumpolar Current-derived inflow dominates the across-gyre transport up to the Antarctic margin. Transport and exchange associated with different time-average components of flow are calculated to determine the relative contributions of high- and low-frequency and time-mean components. Article in Journal/Newspaper Antarc* Antarctic Sea ice Southern Ocean University of Tasmania: UTas ePrints Antarctic Pacific Southern Ocean The Antarctic Weddell Journal of Geophysical Research: Oceans 124 7 4631 4643 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
Ross Gyre Southern Ocean upwelling zone downwelling zone |
spellingShingle |
Ross Gyre Southern Ocean upwelling zone downwelling zone Roach, CJ Speer, K Exchange of water between the Ross Gyre and ACC assessed by Lagrangian particle tracking |
topic_facet |
Ross Gyre Southern Ocean upwelling zone downwelling zone |
description |
To reach upwelling and downwelling zones deep within the Southern Ocean seasonal sea ice cover, water masses must move across the Antarctic Circumpolar Current and through current systems including the Ross Gyre, Weddell Gyre, and Antarctic Slope Current. In this study we focus our attention on the Lagrangian exchange between the Ross Gyre and surrounding current systems. We conducted numerical experiments using five-day 3-D velocity fields from the Southern Ocean State Estimate with a particle tracking package to identify pathways by which waters move from near the Antarctic coastal margins or Antarctic Circumpolar Current into the interior of the Ross Gyre, and to identify the time scales of variability associated with these pathways. Waters from near the Antarctic margins enter the Ross Gyre along the western and northern boundaries of gyre until the gyre separates from the Pacific-Antarctic Ridge near fracture zones. At this juncture, Antarctic Circumpolar Current-derived inflow dominates the across-gyre transport up to the Antarctic margin. Transport and exchange associated with different time-average components of flow are calculated to determine the relative contributions of high- and low-frequency and time-mean components. |
format |
Article in Journal/Newspaper |
author |
Roach, CJ Speer, K |
author_facet |
Roach, CJ Speer, K |
author_sort |
Roach, CJ |
title |
Exchange of water between the Ross Gyre and ACC assessed by Lagrangian particle tracking |
title_short |
Exchange of water between the Ross Gyre and ACC assessed by Lagrangian particle tracking |
title_full |
Exchange of water between the Ross Gyre and ACC assessed by Lagrangian particle tracking |
title_fullStr |
Exchange of water between the Ross Gyre and ACC assessed by Lagrangian particle tracking |
title_full_unstemmed |
Exchange of water between the Ross Gyre and ACC assessed by Lagrangian particle tracking |
title_sort |
exchange of water between the ross gyre and acc assessed by lagrangian particle tracking |
publisher |
Wiley-Blackwell Publishing Inc. |
publishDate |
2019 |
url |
https://eprints.utas.edu.au/33256/ https://eprints.utas.edu.au/33256/1/137550%20-%20Exchange%20of%20water%20between%20the%20Ross%20Gyre%20and%20ACC%20assessed%20by%20Lagrangian.pdf |
geographic |
Antarctic Pacific Southern Ocean The Antarctic Weddell |
geographic_facet |
Antarctic Pacific Southern Ocean The Antarctic Weddell |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_relation |
https://eprints.utas.edu.au/33256/1/137550%20-%20Exchange%20of%20water%20between%20the%20Ross%20Gyre%20and%20ACC%20assessed%20by%20Lagrangian.pdf Roach, CJ orcid:0000-0002-1487-1363 and Speer, K 2019 , 'Exchange of water between the Ross Gyre and ACC assessed by Lagrangian particle tracking' , Journal of Geophysical Research: Oceans, vol. 124, no. 7 , pp. 4631-4643 , doi:10.1029/2018JC014845 <http://dx.doi.org/10.1029/2018JC014845>. |
op_doi |
https://doi.org/10.1029/2018JC014845 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
124 |
container_issue |
7 |
container_start_page |
4631 |
op_container_end_page |
4643 |
_version_ |
1766022152552710144 |