An assessment of forward and inverse GIA solutions for Antarctica
In this work we assess the most recent estimates of glacio isostatic adjustment (GIA) for Antarctica, including those from both forward and inverse methods. The assessment is based on a comparison of the estimated uplift rates with a set of elastic-corrected GPS vertical velocities. These have been...
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Online Access: | https://doi.org/10.1002/2016JB013154 http://ecite.utas.edu.au/111505 |
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ftunivtasecite:oai:ecite.utas.edu.au:111505 2023-05-15T13:24:03+02:00 An assessment of forward and inverse GIA solutions for Antarctica Martin-Espanol, A King, MA Zammit-Mangion, A Andrews, SB Moore, P Bamber, JL 2016 application/pdf https://doi.org/10.1002/2016JB013154 http://ecite.utas.edu.au/111505 en eng Wiley-Blackwell Publishing, Inc. http://ecite.utas.edu.au/111505/2/111505 - an assessment of forward.pdf http://dx.doi.org/10.1002/2016JB013154 http://purl.org/au-research/grants/arc/FT110100207 Martin-Espanol, A and King, MA and Zammit-Mangion, A and Andrews, SB and Moore, P and Bamber, JL, An assessment of forward and inverse GIA solutions for Antarctica, Journal of Geophysical Research: Solid Earth, 121, (9) pp. 6947-6965. ISSN 2169-9313 (2016) [Refereed Article] http://ecite.utas.edu.au/111505 Engineering Geomatic Engineering Geodesy Refereed Article PeerReviewed 2016 ftunivtasecite https://doi.org/10.1002/2016JB013154 2019-12-13T22:11:50Z In this work we assess the most recent estimates of glacio isostatic adjustment (GIA) for Antarctica, including those from both forward and inverse methods. The assessment is based on a comparison of the estimated uplift rates with a set of elastic-corrected GPS vertical velocities. These have been observed from an extensive GPS network and computed using data over the period 2009-2014. We find systematic underestimations of the observed uplift rates in both inverse and forward methods over specific regions of Antarctica characterized by low mantle viscosities and thin lithosphere, such as the northern Antarctic Peninsula and the Amundsen Sea Embayment, where its recent ice discharge history is likely to be playing a role in current GIA. Uplift estimates for regions where many GIA models have traditionally placed their uplift maxima, such as the margins of Filchner-Ronne and Ross ice shelves are found to be overestimated. GIA estimates show large variability over the interior of East Antarctica which results in increased uncertainties on the ice-sheet mass balance derived from gravimetry methods. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctic Antarctic Peninsula Antarctica Antarctica Journal East Antarctica Ice Sheet Ice Shelves eCite UTAS (University of Tasmania) Amundsen Sea Antarctic Antarctic Peninsula East Antarctica Journal of Geophysical Research: Solid Earth 121 9 6947 6965 |
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Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Engineering Geomatic Engineering Geodesy |
spellingShingle |
Engineering Geomatic Engineering Geodesy Martin-Espanol, A King, MA Zammit-Mangion, A Andrews, SB Moore, P Bamber, JL An assessment of forward and inverse GIA solutions for Antarctica |
topic_facet |
Engineering Geomatic Engineering Geodesy |
description |
In this work we assess the most recent estimates of glacio isostatic adjustment (GIA) for Antarctica, including those from both forward and inverse methods. The assessment is based on a comparison of the estimated uplift rates with a set of elastic-corrected GPS vertical velocities. These have been observed from an extensive GPS network and computed using data over the period 2009-2014. We find systematic underestimations of the observed uplift rates in both inverse and forward methods over specific regions of Antarctica characterized by low mantle viscosities and thin lithosphere, such as the northern Antarctic Peninsula and the Amundsen Sea Embayment, where its recent ice discharge history is likely to be playing a role in current GIA. Uplift estimates for regions where many GIA models have traditionally placed their uplift maxima, such as the margins of Filchner-Ronne and Ross ice shelves are found to be overestimated. GIA estimates show large variability over the interior of East Antarctica which results in increased uncertainties on the ice-sheet mass balance derived from gravimetry methods. |
format |
Article in Journal/Newspaper |
author |
Martin-Espanol, A King, MA Zammit-Mangion, A Andrews, SB Moore, P Bamber, JL |
author_facet |
Martin-Espanol, A King, MA Zammit-Mangion, A Andrews, SB Moore, P Bamber, JL |
author_sort |
Martin-Espanol, A |
title |
An assessment of forward and inverse GIA solutions for Antarctica |
title_short |
An assessment of forward and inverse GIA solutions for Antarctica |
title_full |
An assessment of forward and inverse GIA solutions for Antarctica |
title_fullStr |
An assessment of forward and inverse GIA solutions for Antarctica |
title_full_unstemmed |
An assessment of forward and inverse GIA solutions for Antarctica |
title_sort |
assessment of forward and inverse gia solutions for antarctica |
publisher |
Wiley-Blackwell Publishing, Inc. |
publishDate |
2016 |
url |
https://doi.org/10.1002/2016JB013154 http://ecite.utas.edu.au/111505 |
geographic |
Amundsen Sea Antarctic Antarctic Peninsula East Antarctica |
geographic_facet |
Amundsen Sea Antarctic Antarctic Peninsula East Antarctica |
genre |
Amundsen Sea Antarc* Antarctic Antarctic Peninsula Antarctica Antarctica Journal East Antarctica Ice Sheet Ice Shelves |
genre_facet |
Amundsen Sea Antarc* Antarctic Antarctic Peninsula Antarctica Antarctica Journal East Antarctica Ice Sheet Ice Shelves |
op_relation |
http://ecite.utas.edu.au/111505/2/111505 - an assessment of forward.pdf http://dx.doi.org/10.1002/2016JB013154 http://purl.org/au-research/grants/arc/FT110100207 Martin-Espanol, A and King, MA and Zammit-Mangion, A and Andrews, SB and Moore, P and Bamber, JL, An assessment of forward and inverse GIA solutions for Antarctica, Journal of Geophysical Research: Solid Earth, 121, (9) pp. 6947-6965. ISSN 2169-9313 (2016) [Refereed Article] http://ecite.utas.edu.au/111505 |
op_doi |
https://doi.org/10.1002/2016JB013154 |
container_title |
Journal of Geophysical Research: Solid Earth |
container_volume |
121 |
container_issue |
9 |
container_start_page |
6947 |
op_container_end_page |
6965 |
_version_ |
1766377178757332992 |