Thermal haloes around plume tails
The inward flow of ambient mantle material can cause thermal haloes around plume tail conduits to be narrow. The plume is hard to detect tomographically within depth ranges where such flow occurs. This may occur in the transition zone beneath Iceland. The influx rate per length of conduit needs to b...
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2004
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fthighwire:oai:open-archive.highwire.org:gji:156/2/359 2023-05-15T16:48:28+02:00 Thermal haloes around plume tails Sleep, Norman H. 2004-02-01 00:00:00.0 text/html http://gji.oxfordjournals.org/cgi/content/short/156/2/359 https://doi.org/10.1111/j.1365-246X.2003.02176.x en eng Oxford University Press http://gji.oxfordjournals.org/cgi/content/short/156/2/359 http://dx.doi.org/10.1111/j.1365-246X.2003.02176.x Copyright (C) 2004, Oxford University Press Tectonics and Geodynamics: Fast Track Paper TEXT 2004 fthighwire https://doi.org/10.1111/j.1365-246X.2003.02176.x 2013-05-27T00:50:40Z The inward flow of ambient mantle material can cause thermal haloes around plume tail conduits to be narrow. The plume is hard to detect tomographically within depth ranges where such flow occurs. This may occur in the transition zone beneath Iceland. The influx rate per length of conduit needs to be of the order of 25 × 10−6 m2 s−1 to have noticeable effects. Such flow rates would quench weak plumes but not greatly perturb strong ones. A pressure deficit of the plume conduit of several MPa would drive this flow if the mantle viscosity did not exceed 1022 Pa s. Text Iceland HighWire Press (Stanford University) Geophysical Journal International 156 2 359 362 |
institution |
Open Polar |
collection |
HighWire Press (Stanford University) |
op_collection_id |
fthighwire |
language |
English |
topic |
Tectonics and Geodynamics: Fast Track Paper |
spellingShingle |
Tectonics and Geodynamics: Fast Track Paper Sleep, Norman H. Thermal haloes around plume tails |
topic_facet |
Tectonics and Geodynamics: Fast Track Paper |
description |
The inward flow of ambient mantle material can cause thermal haloes around plume tail conduits to be narrow. The plume is hard to detect tomographically within depth ranges where such flow occurs. This may occur in the transition zone beneath Iceland. The influx rate per length of conduit needs to be of the order of 25 × 10−6 m2 s−1 to have noticeable effects. Such flow rates would quench weak plumes but not greatly perturb strong ones. A pressure deficit of the plume conduit of several MPa would drive this flow if the mantle viscosity did not exceed 1022 Pa s. |
format |
Text |
author |
Sleep, Norman H. |
author_facet |
Sleep, Norman H. |
author_sort |
Sleep, Norman H. |
title |
Thermal haloes around plume tails |
title_short |
Thermal haloes around plume tails |
title_full |
Thermal haloes around plume tails |
title_fullStr |
Thermal haloes around plume tails |
title_full_unstemmed |
Thermal haloes around plume tails |
title_sort |
thermal haloes around plume tails |
publisher |
Oxford University Press |
publishDate |
2004 |
url |
http://gji.oxfordjournals.org/cgi/content/short/156/2/359 https://doi.org/10.1111/j.1365-246X.2003.02176.x |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
http://gji.oxfordjournals.org/cgi/content/short/156/2/359 http://dx.doi.org/10.1111/j.1365-246X.2003.02176.x |
op_rights |
Copyright (C) 2004, Oxford University Press |
op_doi |
https://doi.org/10.1111/j.1365-246X.2003.02176.x |
container_title |
Geophysical Journal International |
container_volume |
156 |
container_issue |
2 |
container_start_page |
359 |
op_container_end_page |
362 |
_version_ |
1766038559898206208 |