Modeling Viscoelastic Solid Earth Deformation Due To Ice Age and Contemporary Glacial Mass Changes in ASPECT
Abstract The redistribution of past and present ice and ocean loading on Earth's surface causes solid Earth deformation and geoid changes, known as glacial isostatic adjustment. The deformation is controlled by elastic and viscous material parameters, which are inhomogeneous in the Earth. We pr...
Published in: | Geochemistry, Geophysics, Geosystems |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
The Geochemical Society
2023
|
Subjects: | |
Online Access: | http://hdl.handle.net/10852/108878 https://doi.org/10.1029/2022GC010813 |
id |
ftoslouniv:oai:www.duo.uio.no:10852/108878 |
---|---|
record_format |
openpolar |
spelling |
ftoslouniv:oai:www.duo.uio.no:10852/108878 2024-09-15T17:48:13+00:00 Modeling Viscoelastic Solid Earth Deformation Due To Ice Age and Contemporary Glacial Mass Changes in ASPECT ENEngelskEnglishModeling Viscoelastic Solid Earth Deformation Due To Ice Age and Contemporary Glacial Mass Changes in ASPECT Weerdesteijn, Maaike Francine Maria Naliboff, John B. Conrad, Clinton Phillips Reusen, Jesse M. Steffen, Rebekka Heister, Timo Zhang, Jiaqi 2023-06-27T14:57:19Z http://hdl.handle.net/10852/108878 https://doi.org/10.1029/2022GC010813 EN eng The Geochemical Society NFR/288449 NFR/223272 NFR/332523 Weerdesteijn, Maaike Francine Maria Naliboff, John B. Conrad, Clinton Phillips Reusen, Jesse M. Steffen, Rebekka Heister, Timo Zhang, Jiaqi . Modeling Viscoelastic Solid Earth Deformation Due To Ice Age and Contemporary Glacial Mass Changes in ASPECT. Geochemistry Geophysics Geosystems. 2023, 24(3) http://hdl.handle.net/10852/108878 2158792 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geochemistry Geophysics Geosystems&rft.volume=24&rft.spage=&rft.date=2023 Geochemistry Geophysics Geosystems 24 3 23 https://doi.org/10.1029/2022GC010813 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ 1525-2027 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2023 ftoslouniv https://doi.org/10.1029/2022GC010813 2024-08-05T14:09:29Z Abstract The redistribution of past and present ice and ocean loading on Earth's surface causes solid Earth deformation and geoid changes, known as glacial isostatic adjustment. The deformation is controlled by elastic and viscous material parameters, which are inhomogeneous in the Earth. We present a new viscoelastic solid Earth deformation model in ASPECT (Advanced Solver for Problems in Earth's ConvecTion): a modern, massively parallel, open‐source finite element code originally designed to simulate convection in the Earth's mantle. We show the performance of solid Earth deformation in ASPECT and compare solutions to TABOO, a semianalytical code, and Abaqus, a commercial finite element code. The maximum deformation and deformation rates using ASPECT agree within 2.6% for the average percentage difference with TABOO and Abaqus on glacial cycle (∼100 kyr) and contemporary ice melt (∼100 years) timescales. This gives confidence in the performance of our new solid Earth deformation model. We also demonstrate the computational efficiency of using adaptively refined meshes, which is a great advantage for solid Earth deformation modeling. Furthermore, we demonstrate the model performance in the presence of lateral viscosity variations in the upper mantle and report on parallel scalability of the code. This benchmarked code can now be used to investigate regional solid Earth deformation rates from ice age and contemporary ice melt. This is especially interesting for low‐viscosity regions in the upper mantle beneath Antarctica and Greenland, where it is not fully understood how ice age and contemporary ice melting contribute to geodetic measurements of solid Earth deformation. Article in Journal/Newspaper Antarc* Antarctica Greenland Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Geochemistry, Geophysics, Geosystems 24 3 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
Abstract The redistribution of past and present ice and ocean loading on Earth's surface causes solid Earth deformation and geoid changes, known as glacial isostatic adjustment. The deformation is controlled by elastic and viscous material parameters, which are inhomogeneous in the Earth. We present a new viscoelastic solid Earth deformation model in ASPECT (Advanced Solver for Problems in Earth's ConvecTion): a modern, massively parallel, open‐source finite element code originally designed to simulate convection in the Earth's mantle. We show the performance of solid Earth deformation in ASPECT and compare solutions to TABOO, a semianalytical code, and Abaqus, a commercial finite element code. The maximum deformation and deformation rates using ASPECT agree within 2.6% for the average percentage difference with TABOO and Abaqus on glacial cycle (∼100 kyr) and contemporary ice melt (∼100 years) timescales. This gives confidence in the performance of our new solid Earth deformation model. We also demonstrate the computational efficiency of using adaptively refined meshes, which is a great advantage for solid Earth deformation modeling. Furthermore, we demonstrate the model performance in the presence of lateral viscosity variations in the upper mantle and report on parallel scalability of the code. This benchmarked code can now be used to investigate regional solid Earth deformation rates from ice age and contemporary ice melt. This is especially interesting for low‐viscosity regions in the upper mantle beneath Antarctica and Greenland, where it is not fully understood how ice age and contemporary ice melting contribute to geodetic measurements of solid Earth deformation. |
format |
Article in Journal/Newspaper |
author |
Weerdesteijn, Maaike Francine Maria Naliboff, John B. Conrad, Clinton Phillips Reusen, Jesse M. Steffen, Rebekka Heister, Timo Zhang, Jiaqi |
spellingShingle |
Weerdesteijn, Maaike Francine Maria Naliboff, John B. Conrad, Clinton Phillips Reusen, Jesse M. Steffen, Rebekka Heister, Timo Zhang, Jiaqi Modeling Viscoelastic Solid Earth Deformation Due To Ice Age and Contemporary Glacial Mass Changes in ASPECT |
author_facet |
Weerdesteijn, Maaike Francine Maria Naliboff, John B. Conrad, Clinton Phillips Reusen, Jesse M. Steffen, Rebekka Heister, Timo Zhang, Jiaqi |
author_sort |
Weerdesteijn, Maaike Francine Maria |
title |
Modeling Viscoelastic Solid Earth Deformation Due To Ice Age and Contemporary Glacial Mass Changes in ASPECT |
title_short |
Modeling Viscoelastic Solid Earth Deformation Due To Ice Age and Contemporary Glacial Mass Changes in ASPECT |
title_full |
Modeling Viscoelastic Solid Earth Deformation Due To Ice Age and Contemporary Glacial Mass Changes in ASPECT |
title_fullStr |
Modeling Viscoelastic Solid Earth Deformation Due To Ice Age and Contemporary Glacial Mass Changes in ASPECT |
title_full_unstemmed |
Modeling Viscoelastic Solid Earth Deformation Due To Ice Age and Contemporary Glacial Mass Changes in ASPECT |
title_sort |
modeling viscoelastic solid earth deformation due to ice age and contemporary glacial mass changes in aspect |
publisher |
The Geochemical Society |
publishDate |
2023 |
url |
http://hdl.handle.net/10852/108878 https://doi.org/10.1029/2022GC010813 |
genre |
Antarc* Antarctica Greenland |
genre_facet |
Antarc* Antarctica Greenland |
op_source |
1525-2027 |
op_relation |
NFR/288449 NFR/223272 NFR/332523 Weerdesteijn, Maaike Francine Maria Naliboff, John B. Conrad, Clinton Phillips Reusen, Jesse M. Steffen, Rebekka Heister, Timo Zhang, Jiaqi . Modeling Viscoelastic Solid Earth Deformation Due To Ice Age and Contemporary Glacial Mass Changes in ASPECT. Geochemistry Geophysics Geosystems. 2023, 24(3) http://hdl.handle.net/10852/108878 2158792 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geochemistry Geophysics Geosystems&rft.volume=24&rft.spage=&rft.date=2023 Geochemistry Geophysics Geosystems 24 3 23 https://doi.org/10.1029/2022GC010813 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1029/2022GC010813 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
24 |
container_issue |
3 |
_version_ |
1810289380609228800 |