Correction to 'Ocean tides in the Weddell Sea: New observations on the Filchner-Ronne and Larsen C ice shelves and model validation'
Ocean tides under the large Weddell Sea ice shelves are among the least well observed on Earth. Here we present new, spatially extensive observations of the vertical tidal motion of the Filchner-Ronne and Larsen C ice shelves using Global Positioning System (GPS) data spanning a few weeks to years....
Published in: | Journal of Geophysical Research |
---|---|
Main Authors: | , , , , , , , |
Format: | Text |
Language: | English |
Published: |
x
2011
|
Subjects: | |
Online Access: | https://doi.org/10.1029/2011JC007463 http://ecite.utas.edu.au/82157 |
id |
ftunivtasecite:oai:ecite.utas.edu.au:82157 |
---|---|
record_format |
openpolar |
spelling |
ftunivtasecite:oai:ecite.utas.edu.au:82157 2023-05-15T14:02:31+02:00 Correction to 'Ocean tides in the Weddell Sea: New observations on the Filchner-Ronne and Larsen C ice shelves and model validation' King, MA Padman, L Nicholls, K Clarke, PJ Gudmundsson, GH Kulessa, B Shepherd, A Gourmelen, N 2011 https://doi.org/10.1029/2011JC007463 http://ecite.utas.edu.au/82157 en eng x http://dx.doi.org/10.1029/2011JC007463 King, MA and Padman, L and Nicholls, K and Clarke, PJ and Gudmundsson, GH and Kulessa, B and Shepherd, A and Gourmelen, N, Correction to 'Ocean tides in the Weddell Sea: New observations on the Filchner-Ronne and Larsen C ice shelves and model validation', Journal of Geophysical Research C: Oceans, 116, (C8) pp. 1. ISSN 0148-0227 (2011) [Letter or Note in Journal] http://ecite.utas.edu.au/82157 Earth Sciences Physical Geography and Environmental Geoscience Physical Geography and Environmental Geoscience not elsewhere classified Letter or Note in Journal NonPeerReviewed 2011 ftunivtasecite https://doi.org/10.1029/2011JC007463 2019-12-13T21:47:09Z Ocean tides under the large Weddell Sea ice shelves are among the least well observed on Earth. Here we present new, spatially extensive observations of the vertical tidal motion of the Filchner-Ronne and Larsen C ice shelves using Global Positioning System (GPS) data spanning a few weeks to years. We pay particular attention to the major tidal constituents (M2, S2, O1, K1) as well as important GRACE aliasing periods (K2 and S1). We compare the estimated constituents with recent global and regional tide models and find that no single model is the most accurate across all constituents or ice shelves. The root-sum-square errors are 7-8 cm (CATS2008a and TPXO7.2) and 11-12 cm (GOT4.7 and FES2004) with the energetic M2 (RMSE = 4-8 cm) and S2 (4-5 cm) generally dominating these statistics. The FES2004 K1 is particularly inaccurate near the Larsen C Ice Shelf, with errors approaching 20 cm, meaning that GRACE Release 4 estimates of mass change in the northern Antarctic Peninsula will be biased. We find tidal energy at 3, 4, 5, 6 and, weakly, at 7 cycles per day at all of our sites. The largest amplitudes within these bands are at M4, MO3 and SP3 and approach 30 mm, although significant spatial variations exist. We show that they generally do not appear to originate in areas of reduced water column in ice shelf grounding zones. Comparing model estimates with our M4, MS4 and MN4 values shows that models do not accurately represent these terms. Text Antarc* Antarctic Antarctic Peninsula Ice Shelf Ice Shelves Sea ice Weddell Sea eCite UTAS (University of Tasmania) Antarctic Antarctic Peninsula Weddell Sea Weddell Journal of Geophysical Research 116 C8 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Physical Geography and Environmental Geoscience Physical Geography and Environmental Geoscience not elsewhere classified |
spellingShingle |
Earth Sciences Physical Geography and Environmental Geoscience Physical Geography and Environmental Geoscience not elsewhere classified King, MA Padman, L Nicholls, K Clarke, PJ Gudmundsson, GH Kulessa, B Shepherd, A Gourmelen, N Correction to 'Ocean tides in the Weddell Sea: New observations on the Filchner-Ronne and Larsen C ice shelves and model validation' |
topic_facet |
Earth Sciences Physical Geography and Environmental Geoscience Physical Geography and Environmental Geoscience not elsewhere classified |
description |
Ocean tides under the large Weddell Sea ice shelves are among the least well observed on Earth. Here we present new, spatially extensive observations of the vertical tidal motion of the Filchner-Ronne and Larsen C ice shelves using Global Positioning System (GPS) data spanning a few weeks to years. We pay particular attention to the major tidal constituents (M2, S2, O1, K1) as well as important GRACE aliasing periods (K2 and S1). We compare the estimated constituents with recent global and regional tide models and find that no single model is the most accurate across all constituents or ice shelves. The root-sum-square errors are 7-8 cm (CATS2008a and TPXO7.2) and 11-12 cm (GOT4.7 and FES2004) with the energetic M2 (RMSE = 4-8 cm) and S2 (4-5 cm) generally dominating these statistics. The FES2004 K1 is particularly inaccurate near the Larsen C Ice Shelf, with errors approaching 20 cm, meaning that GRACE Release 4 estimates of mass change in the northern Antarctic Peninsula will be biased. We find tidal energy at 3, 4, 5, 6 and, weakly, at 7 cycles per day at all of our sites. The largest amplitudes within these bands are at M4, MO3 and SP3 and approach 30 mm, although significant spatial variations exist. We show that they generally do not appear to originate in areas of reduced water column in ice shelf grounding zones. Comparing model estimates with our M4, MS4 and MN4 values shows that models do not accurately represent these terms. |
format |
Text |
author |
King, MA Padman, L Nicholls, K Clarke, PJ Gudmundsson, GH Kulessa, B Shepherd, A Gourmelen, N |
author_facet |
King, MA Padman, L Nicholls, K Clarke, PJ Gudmundsson, GH Kulessa, B Shepherd, A Gourmelen, N |
author_sort |
King, MA |
title |
Correction to 'Ocean tides in the Weddell Sea: New observations on the Filchner-Ronne and Larsen C ice shelves and model validation' |
title_short |
Correction to 'Ocean tides in the Weddell Sea: New observations on the Filchner-Ronne and Larsen C ice shelves and model validation' |
title_full |
Correction to 'Ocean tides in the Weddell Sea: New observations on the Filchner-Ronne and Larsen C ice shelves and model validation' |
title_fullStr |
Correction to 'Ocean tides in the Weddell Sea: New observations on the Filchner-Ronne and Larsen C ice shelves and model validation' |
title_full_unstemmed |
Correction to 'Ocean tides in the Weddell Sea: New observations on the Filchner-Ronne and Larsen C ice shelves and model validation' |
title_sort |
correction to 'ocean tides in the weddell sea: new observations on the filchner-ronne and larsen c ice shelves and model validation' |
publisher |
x |
publishDate |
2011 |
url |
https://doi.org/10.1029/2011JC007463 http://ecite.utas.edu.au/82157 |
geographic |
Antarctic Antarctic Peninsula Weddell Sea Weddell |
geographic_facet |
Antarctic Antarctic Peninsula Weddell Sea Weddell |
genre |
Antarc* Antarctic Antarctic Peninsula Ice Shelf Ice Shelves Sea ice Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Ice Shelf Ice Shelves Sea ice Weddell Sea |
op_relation |
http://dx.doi.org/10.1029/2011JC007463 King, MA and Padman, L and Nicholls, K and Clarke, PJ and Gudmundsson, GH and Kulessa, B and Shepherd, A and Gourmelen, N, Correction to 'Ocean tides in the Weddell Sea: New observations on the Filchner-Ronne and Larsen C ice shelves and model validation', Journal of Geophysical Research C: Oceans, 116, (C8) pp. 1. ISSN 0148-0227 (2011) [Letter or Note in Journal] http://ecite.utas.edu.au/82157 |
op_doi |
https://doi.org/10.1029/2011JC007463 |
container_title |
Journal of Geophysical Research |
container_volume |
116 |
container_issue |
C8 |
_version_ |
1766272818072256512 |