Towards Constraining Glacial Isostatic Adjustment in Greenland Using ICESat and GPS Observations
Constraining glacial isostatic adjustment (GIA) i.e. the Earth’s viscoelastic response to past ice changes, is an important task, because GIA is a significant correction in gravity-based ice sheet mass balance estimates. Here, we investigate how temporal variations in the observed and modeled crusta...
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2014
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ftunivurbino:oai:ora.uniurb.it:11576/2590994 2024-04-21T08:03:15+00:00 Towards Constraining Glacial Isostatic Adjustment in Greenland Using ICESat and GPS Observations Karina Nielsen Louise S. Sørensen Shfaqat Abbas Khan Sebastian B. Simonsen René Forsberg SPADA, GIORGIO Karina, Nielsen Louise S., Sørensen Shfaqat Abbas, Khan Spada, Giorgio Sebastian B., Simonsen René, Forsberg 2014 STAMPA http://hdl.handle.net/11576/2590994 https://doi.org/10.1007/978-3-642-37222-3_43 http://link.springer.com/chapter/10.1007/978-3-642-37222-3_43 eng eng Springer Berlin Heidelberg country:DEU place:Berlin info:eu-repo/semantics/altIdentifier/isbn/9783642372216 info:eu-repo/semantics/altIdentifier/isbn/9783642372223 info:eu-repo/semantics/altIdentifier/wos/WOS:000363263400043 ispartofbook:International Association of Geodesy SymposiaEarth on the Edge: Science for a Sustainable Planet volume:139 firstpage:325 lastpage:331 numberofpages:7 serie:INTERNATIONAL ASSOCIATION OF GEODESY SYMPOSIA http://hdl.handle.net/11576/2590994 doi:10.1007/978-3-642-37222-3_43 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84927609629 http://link.springer.com/chapter/10.1007/978-3-642-37222-3_43 Elastic uplift GIA GPS Greenland ICESat info:eu-repo/semantics/bookPart 2014 ftunivurbino https://doi.org/10.1007/978-3-642-37222-3_43 2024-03-28T01:06:35Z Constraining glacial isostatic adjustment (GIA) i.e. the Earth’s viscoelastic response to past ice changes, is an important task, because GIA is a significant correction in gravity-based ice sheet mass balance estimates. Here, we investigate how temporal variations in the observed and modeled crustal displacements due to the Earth’s response to ongoing ice mass changes can contribute to the process of constraining GIA. We use mass change grids of the Greenland ice sheet (GrIS) derived from NASA’s high resolution Ice, Cloud and land Elevation Satellite (ICESat) data in three overlapping time spans covering the period 2004–2009 to estimate temporal variations in the elastic response due to present day ice mass loss. The modeled crustal displacements (elastic + GIA) are compared with GPS time series from five permanent sites (KELY, KULU, QAQ1, THU2, and SCOR). We find, that the modeled pattern of elastic crustal displacements shows pronounced variation during the observation period, where an increase in elastic displacement is found at the northwest coast of Greenland, while a decrease is found at the southeast coast. This pattern of temporal changes is supported by the GPS observations. We find, that the temporal behavior of the ICESat-based modeled elastic response agrees well with the GPS observations at the sites KELY, QAQ1, and SCOR. This suggests, that our elastic models are able to resolve the temporal changes in the observed uplift, which indicates that the elastic uplift models are reliable at these sites. Therefore, we conclude that these sites are useful for constraining GIA. Book Part Greenland Ice Sheet Università degli Studi di Urbino: CINECA IRIS 325 331 |
institution |
Open Polar |
collection |
Università degli Studi di Urbino: CINECA IRIS |
op_collection_id |
ftunivurbino |
language |
English |
topic |
Elastic uplift GIA GPS Greenland ICESat |
spellingShingle |
Elastic uplift GIA GPS Greenland ICESat Karina Nielsen Louise S. Sørensen Shfaqat Abbas Khan Sebastian B. Simonsen René Forsberg SPADA, GIORGIO Towards Constraining Glacial Isostatic Adjustment in Greenland Using ICESat and GPS Observations |
topic_facet |
Elastic uplift GIA GPS Greenland ICESat |
description |
Constraining glacial isostatic adjustment (GIA) i.e. the Earth’s viscoelastic response to past ice changes, is an important task, because GIA is a significant correction in gravity-based ice sheet mass balance estimates. Here, we investigate how temporal variations in the observed and modeled crustal displacements due to the Earth’s response to ongoing ice mass changes can contribute to the process of constraining GIA. We use mass change grids of the Greenland ice sheet (GrIS) derived from NASA’s high resolution Ice, Cloud and land Elevation Satellite (ICESat) data in three overlapping time spans covering the period 2004–2009 to estimate temporal variations in the elastic response due to present day ice mass loss. The modeled crustal displacements (elastic + GIA) are compared with GPS time series from five permanent sites (KELY, KULU, QAQ1, THU2, and SCOR). We find, that the modeled pattern of elastic crustal displacements shows pronounced variation during the observation period, where an increase in elastic displacement is found at the northwest coast of Greenland, while a decrease is found at the southeast coast. This pattern of temporal changes is supported by the GPS observations. We find, that the temporal behavior of the ICESat-based modeled elastic response agrees well with the GPS observations at the sites KELY, QAQ1, and SCOR. This suggests, that our elastic models are able to resolve the temporal changes in the observed uplift, which indicates that the elastic uplift models are reliable at these sites. Therefore, we conclude that these sites are useful for constraining GIA. |
author2 |
Karina, Nielsen Louise S., Sørensen Shfaqat Abbas, Khan Spada, Giorgio Sebastian B., Simonsen René, Forsberg |
format |
Book Part |
author |
Karina Nielsen Louise S. Sørensen Shfaqat Abbas Khan Sebastian B. Simonsen René Forsberg SPADA, GIORGIO |
author_facet |
Karina Nielsen Louise S. Sørensen Shfaqat Abbas Khan Sebastian B. Simonsen René Forsberg SPADA, GIORGIO |
author_sort |
Karina Nielsen |
title |
Towards Constraining Glacial Isostatic Adjustment in Greenland Using ICESat and GPS Observations |
title_short |
Towards Constraining Glacial Isostatic Adjustment in Greenland Using ICESat and GPS Observations |
title_full |
Towards Constraining Glacial Isostatic Adjustment in Greenland Using ICESat and GPS Observations |
title_fullStr |
Towards Constraining Glacial Isostatic Adjustment in Greenland Using ICESat and GPS Observations |
title_full_unstemmed |
Towards Constraining Glacial Isostatic Adjustment in Greenland Using ICESat and GPS Observations |
title_sort |
towards constraining glacial isostatic adjustment in greenland using icesat and gps observations |
publisher |
Springer Berlin Heidelberg |
publishDate |
2014 |
url |
http://hdl.handle.net/11576/2590994 https://doi.org/10.1007/978-3-642-37222-3_43 http://link.springer.com/chapter/10.1007/978-3-642-37222-3_43 |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_relation |
info:eu-repo/semantics/altIdentifier/isbn/9783642372216 info:eu-repo/semantics/altIdentifier/isbn/9783642372223 info:eu-repo/semantics/altIdentifier/wos/WOS:000363263400043 ispartofbook:International Association of Geodesy SymposiaEarth on the Edge: Science for a Sustainable Planet volume:139 firstpage:325 lastpage:331 numberofpages:7 serie:INTERNATIONAL ASSOCIATION OF GEODESY SYMPOSIA http://hdl.handle.net/11576/2590994 doi:10.1007/978-3-642-37222-3_43 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84927609629 http://link.springer.com/chapter/10.1007/978-3-642-37222-3_43 |
op_doi |
https://doi.org/10.1007/978-3-642-37222-3_43 |
container_start_page |
325 |
op_container_end_page |
331 |
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1796943179263508480 |