Barotropic tides of the Southern Indian Ocean and the Amery Ice Shelf cavity
The 8 main tidal constituents were computed using a finite element, hydrodynamic ocean tide model over the South Indian Ocean region. The discretization of the domain is of the order of 100 km over the deep ocean and a few hundred meters near the coast. Such refinement in the grid resolution enables...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2007
|
Subjects: | |
Online Access: | https://eprints.utas.edu.au/6998/ https://eprints.utas.edu.au/6998/1/Maraldi_etal_2007GL030900.pdf https://doi.org/10.1029/2007GL030900 |
id |
ftunivtasmania:oai:eprints.utas.edu.au:6998 |
---|---|
record_format |
openpolar |
spelling |
ftunivtasmania:oai:eprints.utas.edu.au:6998 2023-05-15T13:21:58+02:00 Barotropic tides of the Southern Indian Ocean and the Amery Ice Shelf cavity Maraldi, C Galton-Fenzi, BK Lyard, F Testut, L Coleman, R 2007 application/pdf https://eprints.utas.edu.au/6998/ https://eprints.utas.edu.au/6998/1/Maraldi_etal_2007GL030900.pdf https://doi.org/10.1029/2007GL030900 en eng https://eprints.utas.edu.au/6998/1/Maraldi_etal_2007GL030900.pdf Maraldi, C, Galton-Fenzi, BK, Lyard, F, Testut, L and Coleman, R 2007 , 'Barotropic tides of the Southern Indian Ocean and the Amery Ice Shelf cavity' , Geophysical Research Letters, vol. 34, no. L18602 , pp. 1-5 , doi:10.1029/2007GL030900 <http://dx.doi.org/10.1029/2007GL030900>. cc_utas Indian Ocean Amery Ice Shelf barotropic tides Article PeerReviewed 2007 ftunivtasmania https://doi.org/10.1029/2007GL030900 2020-05-30T07:20:49Z The 8 main tidal constituents were computed using a finite element, hydrodynamic ocean tide model over the South Indian Ocean region. The discretization of the domain is of the order of 100 km over the deep ocean and a few hundred meters near the coast. Such refinement in the grid resolution enables wave propagation and damping on the continental shelves to be solved correctly. The model used the GEBCO 1-minute global bathymetric grid which was improved with updated topographic data. The model solutions show good agreement with in-situ observations and Topex-Poseidon altimeter measurements and are significantly better than previously published solutions. We obtain a combined standard deviation of 1.4 cm for differences of our new regional model against independent observations compared to about 2.5 cm for the other tide models. The greatest improvements are found around the Kerguelen Islands, around Antarctica and beneath the Amery Ice Shelf and can be explained by the high grid resolution used and the particular attention given to the accuracy of the bathymetry in those regions. Article in Journal/Newspaper Amery Ice Shelf Antarc* Antarctica Ice Shelf Kerguelen Islands University of Tasmania: UTas ePrints Kerguelen Kerguelen Islands Indian Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Amery Ice Shelf ENVELOPE(71.000,71.000,-69.750,-69.750) Geophysical Research Letters 34 18 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
Indian Ocean Amery Ice Shelf barotropic tides |
spellingShingle |
Indian Ocean Amery Ice Shelf barotropic tides Maraldi, C Galton-Fenzi, BK Lyard, F Testut, L Coleman, R Barotropic tides of the Southern Indian Ocean and the Amery Ice Shelf cavity |
topic_facet |
Indian Ocean Amery Ice Shelf barotropic tides |
description |
The 8 main tidal constituents were computed using a finite element, hydrodynamic ocean tide model over the South Indian Ocean region. The discretization of the domain is of the order of 100 km over the deep ocean and a few hundred meters near the coast. Such refinement in the grid resolution enables wave propagation and damping on the continental shelves to be solved correctly. The model used the GEBCO 1-minute global bathymetric grid which was improved with updated topographic data. The model solutions show good agreement with in-situ observations and Topex-Poseidon altimeter measurements and are significantly better than previously published solutions. We obtain a combined standard deviation of 1.4 cm for differences of our new regional model against independent observations compared to about 2.5 cm for the other tide models. The greatest improvements are found around the Kerguelen Islands, around Antarctica and beneath the Amery Ice Shelf and can be explained by the high grid resolution used and the particular attention given to the accuracy of the bathymetry in those regions. |
format |
Article in Journal/Newspaper |
author |
Maraldi, C Galton-Fenzi, BK Lyard, F Testut, L Coleman, R |
author_facet |
Maraldi, C Galton-Fenzi, BK Lyard, F Testut, L Coleman, R |
author_sort |
Maraldi, C |
title |
Barotropic tides of the Southern Indian Ocean and the Amery Ice Shelf cavity |
title_short |
Barotropic tides of the Southern Indian Ocean and the Amery Ice Shelf cavity |
title_full |
Barotropic tides of the Southern Indian Ocean and the Amery Ice Shelf cavity |
title_fullStr |
Barotropic tides of the Southern Indian Ocean and the Amery Ice Shelf cavity |
title_full_unstemmed |
Barotropic tides of the Southern Indian Ocean and the Amery Ice Shelf cavity |
title_sort |
barotropic tides of the southern indian ocean and the amery ice shelf cavity |
publishDate |
2007 |
url |
https://eprints.utas.edu.au/6998/ https://eprints.utas.edu.au/6998/1/Maraldi_etal_2007GL030900.pdf https://doi.org/10.1029/2007GL030900 |
long_lat |
ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(71.000,71.000,-69.750,-69.750) |
geographic |
Kerguelen Kerguelen Islands Indian Amery Amery Ice Shelf |
geographic_facet |
Kerguelen Kerguelen Islands Indian Amery Amery Ice Shelf |
genre |
Amery Ice Shelf Antarc* Antarctica Ice Shelf Kerguelen Islands |
genre_facet |
Amery Ice Shelf Antarc* Antarctica Ice Shelf Kerguelen Islands |
op_relation |
https://eprints.utas.edu.au/6998/1/Maraldi_etal_2007GL030900.pdf Maraldi, C, Galton-Fenzi, BK, Lyard, F, Testut, L and Coleman, R 2007 , 'Barotropic tides of the Southern Indian Ocean and the Amery Ice Shelf cavity' , Geophysical Research Letters, vol. 34, no. L18602 , pp. 1-5 , doi:10.1029/2007GL030900 <http://dx.doi.org/10.1029/2007GL030900>. |
op_rights |
cc_utas |
op_doi |
https://doi.org/10.1029/2007GL030900 |
container_title |
Geophysical Research Letters |
container_volume |
34 |
container_issue |
18 |
_version_ |
1766362541064192000 |