An assessment of forward and inverse GIA solutions for Antarctica
In this work we assess the most recent estimates of glacial 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...
Published in: | Journal of Geophysical Research: Solid Earth |
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Online Access: | https://hdl.handle.net/1983/4f700294-5ece-42e5-92ad-2d5e8eb44878 https://research-information.bris.ac.uk/en/publications/4f700294-5ece-42e5-92ad-2d5e8eb44878 https://doi.org/10.1002/2016JB013154 https://research-information.bris.ac.uk/ws/files/87794441/Martin_Espanol_et_al_2016_Journal_of_Geophysical_Research_Earth_Surface.pdf https://research-information.bris.ac.uk/ws/files/87904444/jgrb51788_sup_0001_supplementary.pdf http://www.scopus.com/inward/record.url?scp=84990032191&partnerID=8YFLogxK |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/4f700294-5ece-42e5-92ad-2d5e8eb44878 2024-01-28T09:58:27+01:00 An assessment of forward and inverse GIA solutions for Antarctica Martin Espanol, Alba King, Matt Zammit Mangion, Andrew Andrews, Stuart Moore, Philip Bamber, Jonathan 2016-09 application/pdf https://hdl.handle.net/1983/4f700294-5ece-42e5-92ad-2d5e8eb44878 https://research-information.bris.ac.uk/en/publications/4f700294-5ece-42e5-92ad-2d5e8eb44878 https://doi.org/10.1002/2016JB013154 https://research-information.bris.ac.uk/ws/files/87794441/Martin_Espanol_et_al_2016_Journal_of_Geophysical_Research_Earth_Surface.pdf https://research-information.bris.ac.uk/ws/files/87904444/jgrb51788_sup_0001_supplementary.pdf http://www.scopus.com/inward/record.url?scp=84990032191&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Martin Espanol , A , King , M , Zammit Mangion , A , Andrews , S , Moore , P & Bamber , J 2016 , ' An assessment of forward and inverse GIA solutions for Antarctica ' , Journal of Geophysical Research: Solid Earth , vol. 121 , no. 9 , pp. 6947-6965 . https://doi.org/10.1002/2016JB013154 Glacial-isostatic adjustment Antarctica article 2016 ftubristolcris https://doi.org/10.1002/2016JB013154 2024-01-04T23:50:22Z In this work we assess the most recent estimates of glacial 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 University of Bristol: Bristol Research Amundsen Sea Antarctic Antarctic Peninsula East Antarctica Journal of Geophysical Research: Solid Earth 121 9 6947 6965 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
Glacial-isostatic adjustment Antarctica |
spellingShingle |
Glacial-isostatic adjustment Antarctica Martin Espanol, Alba King, Matt Zammit Mangion, Andrew Andrews, Stuart Moore, Philip Bamber, Jonathan An assessment of forward and inverse GIA solutions for Antarctica |
topic_facet |
Glacial-isostatic adjustment Antarctica |
description |
In this work we assess the most recent estimates of glacial 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, Alba King, Matt Zammit Mangion, Andrew Andrews, Stuart Moore, Philip Bamber, Jonathan |
author_facet |
Martin Espanol, Alba King, Matt Zammit Mangion, Andrew Andrews, Stuart Moore, Philip Bamber, Jonathan |
author_sort |
Martin Espanol, Alba |
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 |
publishDate |
2016 |
url |
https://hdl.handle.net/1983/4f700294-5ece-42e5-92ad-2d5e8eb44878 https://research-information.bris.ac.uk/en/publications/4f700294-5ece-42e5-92ad-2d5e8eb44878 https://doi.org/10.1002/2016JB013154 https://research-information.bris.ac.uk/ws/files/87794441/Martin_Espanol_et_al_2016_Journal_of_Geophysical_Research_Earth_Surface.pdf https://research-information.bris.ac.uk/ws/files/87904444/jgrb51788_sup_0001_supplementary.pdf http://www.scopus.com/inward/record.url?scp=84990032191&partnerID=8YFLogxK |
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_source |
Martin Espanol , A , King , M , Zammit Mangion , A , Andrews , S , Moore , P & Bamber , J 2016 , ' An assessment of forward and inverse GIA solutions for Antarctica ' , Journal of Geophysical Research: Solid Earth , vol. 121 , no. 9 , pp. 6947-6965 . https://doi.org/10.1002/2016JB013154 |
op_rights |
info:eu-repo/semantics/openAccess |
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 |
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1789327057736433664 |