Effects of mantle rheologies on viscous heating induced by glacial isostatic adjustment
It has been argued that viscous dissipation from mantle flow in response to surface loading during glacial cycles can result in short-term heating and thus trigger transient volcanism or changes in mantle properties, which may in turn affect mantle dynamics. Furthermore, heating near the Earth'...
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fttudelft:oai:tudelft.nl:uuid:8f4428d3-e77e-49f8-bdca-855e1ca4c88d 2024-04-28T08:24:55+00:00 Effects of mantle rheologies on viscous heating induced by glacial isostatic adjustment Huang, Ping Ping (author) Wu, Patrick (author) van der Wal, W. (author) 2018-04-01 http://resolver.tudelft.nl/uuid:8f4428d3-e77e-49f8-bdca-855e1ca4c88d https://doi.org/10.1093/gji/ggx535 en eng http://www.scopus.com/inward/record.url?scp=85041809281&partnerID=8YFLogxK http://resolver.tudelft.nl/uuid:8f4428d3-e77e-49f8-bdca-855e1ca4c88d Geophysical Journal International--0956-540X--cbd959a4-95fa-4b5e-aa95-5b979be9e365 https://doi.org/10.1093/gji/ggx535 © 2018 Ping Ping Huang, Patrick Wu, W. van der Wal Europe Heat generation and transport Loading of the earth North america Rheology: mantle journal article 2018 fttudelft https://doi.org/10.1093/gji/ggx535 2024-04-09T23:46:37Z It has been argued that viscous dissipation from mantle flow in response to surface loading during glacial cycles can result in short-term heating and thus trigger transient volcanism or changes in mantle properties, which may in turn affect mantle dynamics. Furthermore, heating near the Earth's surface can also affect the stability of ice sheets. We have studied the magnitude and spatial-temporal distribution of viscous heating induced in the mantle by the realistic ice model ICE-6G and gravitationally consistent ocean loads. Three types of mantle rheologies, including linear, non-linear and composite rheologies are considered to see if non-linear creep can induce larger viscous heating than linear rheology. We used the Coupled-Laplace-Finite-Element model of Glacial Isostatic Adjustment (GIA) to compute the strain, stress and shear heating during a glacial cycle. We also investigated the upper bound of temperature change and surface heat flux change due to viscous heating. We found that maximum viscous heating occurs near the end of deglaciation near the edge of the ice sheet with amplitude as high as 120 times larger than that of the chondritic radioactive heating. The maximum heat flux due to viscous heating can reach 30 mW m -2 , but the area with large heat flux is small and the timescale of heating is short. As a result, the upper bound of temperature change due to viscous heating is small. Even if 30 glacial cycles are included, the largest temperature change can be of the order of 0.3 °C. Thus, viscous heating induced by GIA cannot induce volcanism and cannot significantly affect mantle material properties, mantle dynamics nor ice-sheet stability. The Author(s) 2017. Published by Oxford University Press. All rights reserved. Astrodynamics & Space Missions Article in Journal/Newspaper Ice Sheet Delft University of Technology: Institutional Repository Geophysical Journal International 213 1 157 168 |
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Open Polar |
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Delft University of Technology: Institutional Repository |
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fttudelft |
language |
English |
topic |
Europe Heat generation and transport Loading of the earth North america Rheology: mantle |
spellingShingle |
Europe Heat generation and transport Loading of the earth North america Rheology: mantle Huang, Ping Ping (author) Wu, Patrick (author) van der Wal, W. (author) Effects of mantle rheologies on viscous heating induced by glacial isostatic adjustment |
topic_facet |
Europe Heat generation and transport Loading of the earth North america Rheology: mantle |
description |
It has been argued that viscous dissipation from mantle flow in response to surface loading during glacial cycles can result in short-term heating and thus trigger transient volcanism or changes in mantle properties, which may in turn affect mantle dynamics. Furthermore, heating near the Earth's surface can also affect the stability of ice sheets. We have studied the magnitude and spatial-temporal distribution of viscous heating induced in the mantle by the realistic ice model ICE-6G and gravitationally consistent ocean loads. Three types of mantle rheologies, including linear, non-linear and composite rheologies are considered to see if non-linear creep can induce larger viscous heating than linear rheology. We used the Coupled-Laplace-Finite-Element model of Glacial Isostatic Adjustment (GIA) to compute the strain, stress and shear heating during a glacial cycle. We also investigated the upper bound of temperature change and surface heat flux change due to viscous heating. We found that maximum viscous heating occurs near the end of deglaciation near the edge of the ice sheet with amplitude as high as 120 times larger than that of the chondritic radioactive heating. The maximum heat flux due to viscous heating can reach 30 mW m -2 , but the area with large heat flux is small and the timescale of heating is short. As a result, the upper bound of temperature change due to viscous heating is small. Even if 30 glacial cycles are included, the largest temperature change can be of the order of 0.3 °C. Thus, viscous heating induced by GIA cannot induce volcanism and cannot significantly affect mantle material properties, mantle dynamics nor ice-sheet stability. The Author(s) 2017. Published by Oxford University Press. All rights reserved. Astrodynamics & Space Missions |
format |
Article in Journal/Newspaper |
author |
Huang, Ping Ping (author) Wu, Patrick (author) van der Wal, W. (author) |
author_facet |
Huang, Ping Ping (author) Wu, Patrick (author) van der Wal, W. (author) |
author_sort |
Huang, Ping Ping (author) |
title |
Effects of mantle rheologies on viscous heating induced by glacial isostatic adjustment |
title_short |
Effects of mantle rheologies on viscous heating induced by glacial isostatic adjustment |
title_full |
Effects of mantle rheologies on viscous heating induced by glacial isostatic adjustment |
title_fullStr |
Effects of mantle rheologies on viscous heating induced by glacial isostatic adjustment |
title_full_unstemmed |
Effects of mantle rheologies on viscous heating induced by glacial isostatic adjustment |
title_sort |
effects of mantle rheologies on viscous heating induced by glacial isostatic adjustment |
publishDate |
2018 |
url |
http://resolver.tudelft.nl/uuid:8f4428d3-e77e-49f8-bdca-855e1ca4c88d https://doi.org/10.1093/gji/ggx535 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
http://www.scopus.com/inward/record.url?scp=85041809281&partnerID=8YFLogxK http://resolver.tudelft.nl/uuid:8f4428d3-e77e-49f8-bdca-855e1ca4c88d Geophysical Journal International--0956-540X--cbd959a4-95fa-4b5e-aa95-5b979be9e365 https://doi.org/10.1093/gji/ggx535 |
op_rights |
© 2018 Ping Ping Huang, Patrick Wu, W. van der Wal |
op_doi |
https://doi.org/10.1093/gji/ggx535 |
container_title |
Geophysical Journal International |
container_volume |
213 |
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1 |
container_start_page |
157 |
op_container_end_page |
168 |
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1797584921374490624 |