Multiple Effects of Ice Load Changes and Associated Stress Change on Magmatic Systems
Ice retreat on volcanoes reduces pressure at the surface of the Earth and induces stress changes in magmatic systems. The consequences can include increased generation of magma at depth, increased magma capture in the crust and modifcation of failure conditions of magma chambers. We review the metho...
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2013
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Online Access: | http://hdl.handle.net/11568/500675 https://doi.org/10.1002/9781118482698.ch5 https://onlinelibrary.wiley.com/doi/10.1002/9781118482698.ch5 |
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ftunivpisairis:oai:arpi.unipi.it:11568/500675 2024-02-11T10:04:45+01:00 Multiple Effects of Ice Load Changes and Associated Stress Change on Magmatic Systems F. Sigmundsson F. Albino P. Schmidt B. Lund V. Pinel A. Hooper PAGLI, CAROLINA Bill McGuire, Mark Maslin F., Sigmundsson F., Albino P., Schmidt B., Lund V., Pinel A., Hooper Pagli, Carolina 2013 http://hdl.handle.net/11568/500675 https://doi.org/10.1002/9781118482698.ch5 https://onlinelibrary.wiley.com/doi/10.1002/9781118482698.ch5 unknown John Wiley & Sons, Ltd country:USA info:eu-repo/semantics/altIdentifier/isbn/9780470658659 ispartofbook:Climate Forcing of Geological Hazards firstpage:108 lastpage:123 numberofpages:16 alleditors:Bill McGuire, Mark Maslin http://hdl.handle.net/11568/500675 doi:10.1002/9781118482698.ch5 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84886967026 https://onlinelibrary.wiley.com/doi/10.1002/9781118482698.ch5 ice load magma stre glacial unloading crust/mantle magma geometry info:eu-repo/semantics/bookPart 2013 ftunivpisairis https://doi.org/10.1002/9781118482698.ch5 2024-01-17T17:54:03Z Ice retreat on volcanoes reduces pressure at the surface of the Earth and induces stress changes in magmatic systems. The consequences can include increased generation of magma at depth, increased magma capture in the crust and modifcation of failure conditions of magma chambers. We review the methodology to evaluate each of these effects, and consider the infuence of ongoing ice retreat on volcanoes at the mid-Atlantic divergent plate boundary in Iceland. Evaluation of each of these effects requires a series of assumptions regarding the rheology of the crust and mantle, and the nature of magmatic systems, contributing to relatively large uncertainty in response of a magmatic system to climate warming and associated ice retreat. Pressure release melting caused by ice cap retreat in Iceland may at present times generate a similar amount of magma to plate tectonic processes, larger than previously realized. However, new modelling shows that part of this magma may be captured in the crust, rather than being erupted. Gradual retreat of ice caps steadily modify failure conditions at magma chambers, which is highly dependent on their geometry and depth, as well as the details of ice load variations. A model is presented where long-term ice retreat at the Katla volcano decreases the likelihood of eruption, because more magma is needed in the magma chamber to cause failure than in the absence of the ice retreat. Book Part Ice cap Iceland Katla ARPI - Archivio della Ricerca dell'Università di Pisa Katla ENVELOPE(-19.062,-19.062,63.631,63.631) 108 123 Chichester, UK |
institution |
Open Polar |
collection |
ARPI - Archivio della Ricerca dell'Università di Pisa |
op_collection_id |
ftunivpisairis |
language |
unknown |
topic |
ice load magma stre glacial unloading crust/mantle magma geometry |
spellingShingle |
ice load magma stre glacial unloading crust/mantle magma geometry F. Sigmundsson F. Albino P. Schmidt B. Lund V. Pinel A. Hooper PAGLI, CAROLINA Multiple Effects of Ice Load Changes and Associated Stress Change on Magmatic Systems |
topic_facet |
ice load magma stre glacial unloading crust/mantle magma geometry |
description |
Ice retreat on volcanoes reduces pressure at the surface of the Earth and induces stress changes in magmatic systems. The consequences can include increased generation of magma at depth, increased magma capture in the crust and modifcation of failure conditions of magma chambers. We review the methodology to evaluate each of these effects, and consider the infuence of ongoing ice retreat on volcanoes at the mid-Atlantic divergent plate boundary in Iceland. Evaluation of each of these effects requires a series of assumptions regarding the rheology of the crust and mantle, and the nature of magmatic systems, contributing to relatively large uncertainty in response of a magmatic system to climate warming and associated ice retreat. Pressure release melting caused by ice cap retreat in Iceland may at present times generate a similar amount of magma to plate tectonic processes, larger than previously realized. However, new modelling shows that part of this magma may be captured in the crust, rather than being erupted. Gradual retreat of ice caps steadily modify failure conditions at magma chambers, which is highly dependent on their geometry and depth, as well as the details of ice load variations. A model is presented where long-term ice retreat at the Katla volcano decreases the likelihood of eruption, because more magma is needed in the magma chamber to cause failure than in the absence of the ice retreat. |
author2 |
Bill McGuire, Mark Maslin F., Sigmundsson F., Albino P., Schmidt B., Lund V., Pinel A., Hooper Pagli, Carolina |
format |
Book Part |
author |
F. Sigmundsson F. Albino P. Schmidt B. Lund V. Pinel A. Hooper PAGLI, CAROLINA |
author_facet |
F. Sigmundsson F. Albino P. Schmidt B. Lund V. Pinel A. Hooper PAGLI, CAROLINA |
author_sort |
F. Sigmundsson |
title |
Multiple Effects of Ice Load Changes and Associated Stress Change on Magmatic Systems |
title_short |
Multiple Effects of Ice Load Changes and Associated Stress Change on Magmatic Systems |
title_full |
Multiple Effects of Ice Load Changes and Associated Stress Change on Magmatic Systems |
title_fullStr |
Multiple Effects of Ice Load Changes and Associated Stress Change on Magmatic Systems |
title_full_unstemmed |
Multiple Effects of Ice Load Changes and Associated Stress Change on Magmatic Systems |
title_sort |
multiple effects of ice load changes and associated stress change on magmatic systems |
publisher |
John Wiley & Sons, Ltd |
publishDate |
2013 |
url |
http://hdl.handle.net/11568/500675 https://doi.org/10.1002/9781118482698.ch5 https://onlinelibrary.wiley.com/doi/10.1002/9781118482698.ch5 |
long_lat |
ENVELOPE(-19.062,-19.062,63.631,63.631) |
geographic |
Katla |
geographic_facet |
Katla |
genre |
Ice cap Iceland Katla |
genre_facet |
Ice cap Iceland Katla |
op_relation |
info:eu-repo/semantics/altIdentifier/isbn/9780470658659 ispartofbook:Climate Forcing of Geological Hazards firstpage:108 lastpage:123 numberofpages:16 alleditors:Bill McGuire, Mark Maslin http://hdl.handle.net/11568/500675 doi:10.1002/9781118482698.ch5 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84886967026 https://onlinelibrary.wiley.com/doi/10.1002/9781118482698.ch5 |
op_doi |
https://doi.org/10.1002/9781118482698.ch5 |
container_start_page |
108 |
op_container_end_page |
123 |
op_publisher_place |
Chichester, UK |
_version_ |
1790601471675334656 |