ASPECT models of a mantle plume under West Antarctica
In order to test the feasibility of density and viscosity models suitable to explain geoid and dynamic topography in West Antarctica, we perform computations of a thermal plume that enters at the base of a cartesian box corresponding to a region in the upper mantle, as well as some whole-mantle ther...
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_5023186 2024-02-27T08:35:18+00:00 ASPECT models of a mantle plume under West Antarctica Steinberger, B. 2023 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5023186 eng eng GFZ Data Services info:eu-repo/semantics/altIdentifier/doi/10.5880/GFZ.2.5.2023.004 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5023186 info:eu-repo/semantics/workingPaper 2023 ftgfzpotsdam https://doi.org/10.5880/GFZ.2.5.2023.004 2024-01-29T00:44:24Z In order to test the feasibility of density and viscosity models suitable to explain geoid and dynamic topography in West Antarctica, we perform computations of a thermal plume that enters at the base of a cartesian box corresponding to a region in the upper mantle, as well as some whole-mantle thermal plume models, as well as some instantaneous disk models, with ASPECT. The plume models have typically a narrow conduit and the plume tends to only become wider as it spreads beneath the lithosphere, typically shallower than ~300 km. These results are most consistent with a shallow disk model with reduced uppermost mantle viscosity, hence providing further support for such low viscosities beneath West Antarctica. The data are a supplement to the following article: Steinberger, B., Grasnick, M.-L. & Ludwig, R., Exploring the Origin of Geoid Low and Topography High in West Antarctica: Insights from Density Anomalies and Mantle Convection Models, Tektonika, https://doi.org/10.55575/tektonika2023.1.2.35 Report Antarc* Antarctica West Antarctica GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) West Antarctica |
institution |
Open Polar |
collection |
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdam |
language |
English |
description |
In order to test the feasibility of density and viscosity models suitable to explain geoid and dynamic topography in West Antarctica, we perform computations of a thermal plume that enters at the base of a cartesian box corresponding to a region in the upper mantle, as well as some whole-mantle thermal plume models, as well as some instantaneous disk models, with ASPECT. The plume models have typically a narrow conduit and the plume tends to only become wider as it spreads beneath the lithosphere, typically shallower than ~300 km. These results are most consistent with a shallow disk model with reduced uppermost mantle viscosity, hence providing further support for such low viscosities beneath West Antarctica. The data are a supplement to the following article: Steinberger, B., Grasnick, M.-L. & Ludwig, R., Exploring the Origin of Geoid Low and Topography High in West Antarctica: Insights from Density Anomalies and Mantle Convection Models, Tektonika, https://doi.org/10.55575/tektonika2023.1.2.35 |
format |
Report |
author |
Steinberger, B. |
spellingShingle |
Steinberger, B. ASPECT models of a mantle plume under West Antarctica |
author_facet |
Steinberger, B. |
author_sort |
Steinberger, B. |
title |
ASPECT models of a mantle plume under West Antarctica |
title_short |
ASPECT models of a mantle plume under West Antarctica |
title_full |
ASPECT models of a mantle plume under West Antarctica |
title_fullStr |
ASPECT models of a mantle plume under West Antarctica |
title_full_unstemmed |
ASPECT models of a mantle plume under West Antarctica |
title_sort |
aspect models of a mantle plume under west antarctica |
publisher |
GFZ Data Services |
publishDate |
2023 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5023186 |
geographic |
West Antarctica |
geographic_facet |
West Antarctica |
genre |
Antarc* Antarctica West Antarctica |
genre_facet |
Antarc* Antarctica West Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5880/GFZ.2.5.2023.004 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5023186 |
op_doi |
https://doi.org/10.5880/GFZ.2.5.2023.004 |
_version_ |
1792041791140134912 |