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
Global identifier:
Doi(
"10.5880/GFZ.2.5.2023.004",
)
Origins: /Wissenschaft/Helmholtz-Gemeinschaft/GFZ
Tags: Topographie ? Antarktis ? Daten ? Lithosphäre ? EARTH SCIENCE > SOLID EARTH ? EARTH SCIENCE SERVICES > MODELS ? West Antarctica ? hotspot ? mantle flow ? mantle plume ? mantle processes ?
License: cc-by/4.0
Language: Englisch/English
Issued: 2023-01-01
Time ranges: 2023-01-01 - 2023-01-01
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