Impact of 3-D Earth structure on Fennoscandian glacial isostatic adjustment : implications for space-geodetic estimates of present-day crustal deformations.
The importance of including lateral Earth structure in the analysis of Fennoscandian glacial isostatic adjustment (GIA) is investigated using a finite volume numerical formulation. Comparing output from radially-varying 1-D Earth models and models which account for the presence of plate boundaries,...
Published in: | Geophysical Research Letters |
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American Geophysical Union
2006
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Online Access: | http://dro.dur.ac.uk/7479/ http://dro.dur.ac.uk/7479/1/7479.pdf https://doi.org/10.1029/2006GL026568 |
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ftunivdurham:oai:dro.dur.ac.uk.OAI2:7479 2023-05-15T16:11:54+02:00 Impact of 3-D Earth structure on Fennoscandian glacial isostatic adjustment : implications for space-geodetic estimates of present-day crustal deformations. Whitehouse, Pippa Latychev, Konstantin Milne, Glenn A Mitrovica, Jerry X. Kendall, Roblyn 2006-07-01 application/pdf http://dro.dur.ac.uk/7479/ http://dro.dur.ac.uk/7479/1/7479.pdf https://doi.org/10.1029/2006GL026568 unknown American Geophysical Union dro:7479 issn:0094-8276 doi:10.1029/2006GL026568 http://dro.dur.ac.uk/7479/ http://dx.doi.org/10.1029/2006GL026568 http://dro.dur.ac.uk/7479/1/7479.pdf Whitehouse, Pippa and Latychev, Konstantin and Milne, Glenn A and Mitrovica, Jerry X. and Kendall, Roblyn (2006), 'Impact of 3-D Earth structure on Fennoscandian glacial isostatic adjustment : implications for space-geodetic estimates of present-day crustal deformations'., Geophysical research letters, 33, L13502, 10.1029/2006GL026568. To view the published open abstract, go to http://dx.doi.org and enter the DOI. Geophysical research letters, 2006, Vol.33, pp.L13502 [Peer Reviewed Journal] Article PeerReviewed 2006 ftunivdurham https://doi.org/10.1029/2006GL026568 2020-05-28T22:28:08Z The importance of including lateral Earth structure in the analysis of Fennoscandian glacial isostatic adjustment (GIA) is investigated using a finite volume numerical formulation. Comparing output from radially-varying 1-D Earth models and models which account for the presence of plate boundaries, lateral variations in lithospheric thickness and viscosity heterogeneities in the upper and lower mantle, we find that perturbations to present-day rates of surface deformation due to the inclusion of 3-D Earth structure significantly exceed current observational uncertainties. Predicted residuals between 1-D and 3-D Earth models may be improved with the use of a 1-D model which approximates the local depth-dependent mean of the 3-D model. However, the remaining misfit is still large enough to significantly bias inferences of Earth structure and ice history. We conclude that lateral variations at both global and regional scales must be accounted for when interpreting GPS observations from Fennoscandia. Article in Journal/Newspaper Fennoscandia Fennoscandian Durham University: Durham Research Online Geophysical Research Letters 33 13 |
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Open Polar |
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Durham University: Durham Research Online |
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ftunivdurham |
language |
unknown |
description |
The importance of including lateral Earth structure in the analysis of Fennoscandian glacial isostatic adjustment (GIA) is investigated using a finite volume numerical formulation. Comparing output from radially-varying 1-D Earth models and models which account for the presence of plate boundaries, lateral variations in lithospheric thickness and viscosity heterogeneities in the upper and lower mantle, we find that perturbations to present-day rates of surface deformation due to the inclusion of 3-D Earth structure significantly exceed current observational uncertainties. Predicted residuals between 1-D and 3-D Earth models may be improved with the use of a 1-D model which approximates the local depth-dependent mean of the 3-D model. However, the remaining misfit is still large enough to significantly bias inferences of Earth structure and ice history. We conclude that lateral variations at both global and regional scales must be accounted for when interpreting GPS observations from Fennoscandia. |
format |
Article in Journal/Newspaper |
author |
Whitehouse, Pippa Latychev, Konstantin Milne, Glenn A Mitrovica, Jerry X. Kendall, Roblyn |
spellingShingle |
Whitehouse, Pippa Latychev, Konstantin Milne, Glenn A Mitrovica, Jerry X. Kendall, Roblyn Impact of 3-D Earth structure on Fennoscandian glacial isostatic adjustment : implications for space-geodetic estimates of present-day crustal deformations. |
author_facet |
Whitehouse, Pippa Latychev, Konstantin Milne, Glenn A Mitrovica, Jerry X. Kendall, Roblyn |
author_sort |
Whitehouse, Pippa |
title |
Impact of 3-D Earth structure on Fennoscandian glacial isostatic adjustment : implications for space-geodetic estimates of present-day crustal deformations. |
title_short |
Impact of 3-D Earth structure on Fennoscandian glacial isostatic adjustment : implications for space-geodetic estimates of present-day crustal deformations. |
title_full |
Impact of 3-D Earth structure on Fennoscandian glacial isostatic adjustment : implications for space-geodetic estimates of present-day crustal deformations. |
title_fullStr |
Impact of 3-D Earth structure on Fennoscandian glacial isostatic adjustment : implications for space-geodetic estimates of present-day crustal deformations. |
title_full_unstemmed |
Impact of 3-D Earth structure on Fennoscandian glacial isostatic adjustment : implications for space-geodetic estimates of present-day crustal deformations. |
title_sort |
impact of 3-d earth structure on fennoscandian glacial isostatic adjustment : implications for space-geodetic estimates of present-day crustal deformations. |
publisher |
American Geophysical Union |
publishDate |
2006 |
url |
http://dro.dur.ac.uk/7479/ http://dro.dur.ac.uk/7479/1/7479.pdf https://doi.org/10.1029/2006GL026568 |
genre |
Fennoscandia Fennoscandian |
genre_facet |
Fennoscandia Fennoscandian |
op_source |
Geophysical research letters, 2006, Vol.33, pp.L13502 [Peer Reviewed Journal] |
op_relation |
dro:7479 issn:0094-8276 doi:10.1029/2006GL026568 http://dro.dur.ac.uk/7479/ http://dx.doi.org/10.1029/2006GL026568 http://dro.dur.ac.uk/7479/1/7479.pdf |
op_rights |
Whitehouse, Pippa and Latychev, Konstantin and Milne, Glenn A and Mitrovica, Jerry X. and Kendall, Roblyn (2006), 'Impact of 3-D Earth structure on Fennoscandian glacial isostatic adjustment : implications for space-geodetic estimates of present-day crustal deformations'., Geophysical research letters, 33, L13502, 10.1029/2006GL026568. To view the published open abstract, go to http://dx.doi.org and enter the DOI. |
op_doi |
https://doi.org/10.1029/2006GL026568 |
container_title |
Geophysical Research Letters |
container_volume |
33 |
container_issue |
13 |
_version_ |
1765997114983186432 |