Bathymetry-constrained navigation of Argo floats under sea ice on the Antarctic Continental Shelf
Antarctic continental shelf waters are poorly sampled, particularly beneath sea ice during winter. Profiling floats could help fill this gap, but floats are unable to surface to obtain a satellite position when ice is present. We deployed Argo profiling floats in a coastal polynya with a novel missi...
Published in: | Geophysical Research Letters |
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Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Amer Geophysical Union
2020
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Online Access: | https://eprints.utas.edu.au/37257/ https://eprints.utas.edu.au/37257/1/143653%20-%20Bathymetry-constrained%20navigation%20of%20Argo%20floats.pdf |
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ftunivtasmania:oai:eprints.utas.edu.au:37257 2023-05-15T13:31:53+02:00 Bathymetry-constrained navigation of Argo floats under sea ice on the Antarctic Continental Shelf Wallace, LO van Wijk, EM Rintoul, SR Hally, B 2020 application/pdf https://eprints.utas.edu.au/37257/ https://eprints.utas.edu.au/37257/1/143653%20-%20Bathymetry-constrained%20navigation%20of%20Argo%20floats.pdf en eng Amer Geophysical Union https://eprints.utas.edu.au/37257/1/143653%20-%20Bathymetry-constrained%20navigation%20of%20Argo%20floats.pdf Wallace, LO, van Wijk, EM, Rintoul, SR orcid:0000-0002-7055-9876 and Hally, B 2020 , 'Bathymetry-constrained navigation of Argo floats under sea ice on the Antarctic Continental Shelf' , Geophysical Research Letters, vol. 47, no. 11 , pp. 1-9 , doi:10.1029/2020GL087019 <http://dx.doi.org/10.1029/2020GL087019>. Argo profiling floats navigation sea ice Antarctic continental shelf polynya Article PeerReviewed 2020 ftunivtasmania https://doi.org/10.1029/2020GL087019 2021-09-13T22:20:41Z Antarctic continental shelf waters are poorly sampled, particularly beneath sea ice during winter. Profiling floats could help fill this gap, but floats are unable to surface to obtain a satellite position when ice is present. We deployed Argo profiling floats in a coastal polynya with a novel mission to rest on the sea floor between profiles. “Parking” on the seabed minimized the drift of the floats and allowed year‐round, full‐depth measurements over multiple winters. Measurements of water depth derived from the floats were used in combination with known bathymetry to constrain the position of profiles collected under ice. Errors were quantified by withholding known positions and comparing them to estimated positions; the bathymetrically constrained algorithm outperformed linear interpolation. A similar approach could potentially be used to geolocate other under‐ice oceanographic platforms that measure water depth. Article in Journal/Newspaper Antarc* Antarctic Sea ice University of Tasmania: UTas ePrints Antarctic The Antarctic Geophysical Research Letters 47 11 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
Argo profiling floats navigation sea ice Antarctic continental shelf polynya |
spellingShingle |
Argo profiling floats navigation sea ice Antarctic continental shelf polynya Wallace, LO van Wijk, EM Rintoul, SR Hally, B Bathymetry-constrained navigation of Argo floats under sea ice on the Antarctic Continental Shelf |
topic_facet |
Argo profiling floats navigation sea ice Antarctic continental shelf polynya |
description |
Antarctic continental shelf waters are poorly sampled, particularly beneath sea ice during winter. Profiling floats could help fill this gap, but floats are unable to surface to obtain a satellite position when ice is present. We deployed Argo profiling floats in a coastal polynya with a novel mission to rest on the sea floor between profiles. “Parking” on the seabed minimized the drift of the floats and allowed year‐round, full‐depth measurements over multiple winters. Measurements of water depth derived from the floats were used in combination with known bathymetry to constrain the position of profiles collected under ice. Errors were quantified by withholding known positions and comparing them to estimated positions; the bathymetrically constrained algorithm outperformed linear interpolation. A similar approach could potentially be used to geolocate other under‐ice oceanographic platforms that measure water depth. |
format |
Article in Journal/Newspaper |
author |
Wallace, LO van Wijk, EM Rintoul, SR Hally, B |
author_facet |
Wallace, LO van Wijk, EM Rintoul, SR Hally, B |
author_sort |
Wallace, LO |
title |
Bathymetry-constrained navigation of Argo floats under sea ice on the Antarctic Continental Shelf |
title_short |
Bathymetry-constrained navigation of Argo floats under sea ice on the Antarctic Continental Shelf |
title_full |
Bathymetry-constrained navigation of Argo floats under sea ice on the Antarctic Continental Shelf |
title_fullStr |
Bathymetry-constrained navigation of Argo floats under sea ice on the Antarctic Continental Shelf |
title_full_unstemmed |
Bathymetry-constrained navigation of Argo floats under sea ice on the Antarctic Continental Shelf |
title_sort |
bathymetry-constrained navigation of argo floats under sea ice on the antarctic continental shelf |
publisher |
Amer Geophysical Union |
publishDate |
2020 |
url |
https://eprints.utas.edu.au/37257/ https://eprints.utas.edu.au/37257/1/143653%20-%20Bathymetry-constrained%20navigation%20of%20Argo%20floats.pdf |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Sea ice |
genre_facet |
Antarc* Antarctic Sea ice |
op_relation |
https://eprints.utas.edu.au/37257/1/143653%20-%20Bathymetry-constrained%20navigation%20of%20Argo%20floats.pdf Wallace, LO, van Wijk, EM, Rintoul, SR orcid:0000-0002-7055-9876 and Hally, B 2020 , 'Bathymetry-constrained navigation of Argo floats under sea ice on the Antarctic Continental Shelf' , Geophysical Research Letters, vol. 47, no. 11 , pp. 1-9 , doi:10.1029/2020GL087019 <http://dx.doi.org/10.1029/2020GL087019>. |
op_doi |
https://doi.org/10.1029/2020GL087019 |
container_title |
Geophysical Research Letters |
container_volume |
47 |
container_issue |
11 |
_version_ |
1766021976089952256 |