Climate effects on volcanism: influence on magmatic systems of loading and unloading from ice mass variations, with examples from Iceland
Pressure influences both magma production and the failure of magma chambers. Changes in pressure interact with the local tectonic settings and can affect magmatic activity. Present-day reduction in ice load on subglacial volcanoes due to global warming is modifying pressure conditions in magmatic sy...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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Online Access: | http://hdl.handle.net/11568/500503 https://doi.org/10.1098/rsta.2010.0042 http://rsta.royalsocietypublishing.org/content/368/1919/2519.long |
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ftunivpisairis:oai:arpi.unipi.it:11568/500503 2024-02-27T08:41:52+00:00 Climate effects on volcanism: influence on magmatic systems of loading and unloading from ice mass variations, with examples from Iceland Sigmundsson F. Pinel V. Lund B. Albino F. PAGLI, CAROLINA Geirsson H. Sturkell E. Sigmundsson, F. Pinel, V. Lund, B. Albino, F. Pagli, Carolina Geirsson, H. Sturkell, E. 2010 http://hdl.handle.net/11568/500503 https://doi.org/10.1098/rsta.2010.0042 http://rsta.royalsocietypublishing.org/content/368/1919/2519.long eng eng info:eu-repo/semantics/altIdentifier/pmid/20403840 info:eu-repo/semantics/altIdentifier/wos/WOS:000277232300011 volume:368 issue:1919 firstpage:2519 lastpage:2534 numberofpages:16 journal:PHILOSOPHICAL TRANSACTIONS - ROYAL SOCIETY. MATHEMATICAL, PHYSICAL AND ENGINEERING SCIENCES http://hdl.handle.net/11568/500503 doi:10.1098/rsta.2010.0042 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-77952997062 http://rsta.royalsocietypublishing.org/content/368/1919/2519.long info:eu-repo/semantics/article 2010 ftunivpisairis https://doi.org/10.1098/rsta.2010.0042 2024-01-31T17:45:08Z Pressure influences both magma production and the failure of magma chambers. Changes in pressure interact with the local tectonic settings and can affect magmatic activity. Present-day reduction in ice load on subglacial volcanoes due to global warming is modifying pressure conditions in magmatic systems. The large pulse in volcanic production at the end of the last glaciation in Iceland suggests a link between unloading and volcanism, and models of that process can help to evaluate future scenarios. A viscoelastic model of glacio-isostatic adjustment that considers melt generation demonstrates how surface unloading may lead to a pulse in magmatic activity. Iceland’s ice caps have been thinning since 1890 and glacial rebound at rates exceeding 20 mm yr−1 is ongoing. Modelling predicts a significant amount of ‘additional’ magma generation under Iceland due to ice retreat. The unloading also influences stress conditions in shallow magma chambers, modifying their failure conditions in a manner that depends critically on ice retreat, the shape and depth of magma chambers as well as the compressibility of the magma. An annual cycle of land elevation in Iceland, due to seasonal variation of ice mass, indicates an annual modulation of failure conditions in subglacial magma chambers. Article in Journal/Newspaper Iceland ARPI - Archivio della Ricerca dell'Università di Pisa Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 368 1919 2519 2534 |
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Open Polar |
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ARPI - Archivio della Ricerca dell'Università di Pisa |
op_collection_id |
ftunivpisairis |
language |
English |
description |
Pressure influences both magma production and the failure of magma chambers. Changes in pressure interact with the local tectonic settings and can affect magmatic activity. Present-day reduction in ice load on subglacial volcanoes due to global warming is modifying pressure conditions in magmatic systems. The large pulse in volcanic production at the end of the last glaciation in Iceland suggests a link between unloading and volcanism, and models of that process can help to evaluate future scenarios. A viscoelastic model of glacio-isostatic adjustment that considers melt generation demonstrates how surface unloading may lead to a pulse in magmatic activity. Iceland’s ice caps have been thinning since 1890 and glacial rebound at rates exceeding 20 mm yr−1 is ongoing. Modelling predicts a significant amount of ‘additional’ magma generation under Iceland due to ice retreat. The unloading also influences stress conditions in shallow magma chambers, modifying their failure conditions in a manner that depends critically on ice retreat, the shape and depth of magma chambers as well as the compressibility of the magma. An annual cycle of land elevation in Iceland, due to seasonal variation of ice mass, indicates an annual modulation of failure conditions in subglacial magma chambers. |
author2 |
Sigmundsson, F. Pinel, V. Lund, B. Albino, F. Pagli, Carolina Geirsson, H. Sturkell, E. |
format |
Article in Journal/Newspaper |
author |
Sigmundsson F. Pinel V. Lund B. Albino F. PAGLI, CAROLINA Geirsson H. Sturkell E. |
spellingShingle |
Sigmundsson F. Pinel V. Lund B. Albino F. PAGLI, CAROLINA Geirsson H. Sturkell E. Climate effects on volcanism: influence on magmatic systems of loading and unloading from ice mass variations, with examples from Iceland |
author_facet |
Sigmundsson F. Pinel V. Lund B. Albino F. PAGLI, CAROLINA Geirsson H. Sturkell E. |
author_sort |
Sigmundsson F. |
title |
Climate effects on volcanism: influence on magmatic systems of loading and unloading from ice mass variations, with examples from Iceland |
title_short |
Climate effects on volcanism: influence on magmatic systems of loading and unloading from ice mass variations, with examples from Iceland |
title_full |
Climate effects on volcanism: influence on magmatic systems of loading and unloading from ice mass variations, with examples from Iceland |
title_fullStr |
Climate effects on volcanism: influence on magmatic systems of loading and unloading from ice mass variations, with examples from Iceland |
title_full_unstemmed |
Climate effects on volcanism: influence on magmatic systems of loading and unloading from ice mass variations, with examples from Iceland |
title_sort |
climate effects on volcanism: influence on magmatic systems of loading and unloading from ice mass variations, with examples from iceland |
publishDate |
2010 |
url |
http://hdl.handle.net/11568/500503 https://doi.org/10.1098/rsta.2010.0042 http://rsta.royalsocietypublishing.org/content/368/1919/2519.long |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
info:eu-repo/semantics/altIdentifier/pmid/20403840 info:eu-repo/semantics/altIdentifier/wos/WOS:000277232300011 volume:368 issue:1919 firstpage:2519 lastpage:2534 numberofpages:16 journal:PHILOSOPHICAL TRANSACTIONS - ROYAL SOCIETY. MATHEMATICAL, PHYSICAL AND ENGINEERING SCIENCES http://hdl.handle.net/11568/500503 doi:10.1098/rsta.2010.0042 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-77952997062 http://rsta.royalsocietypublishing.org/content/368/1919/2519.long |
op_doi |
https://doi.org/10.1098/rsta.2010.0042 |
container_title |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
container_volume |
368 |
container_issue |
1919 |
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2519 |
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2534 |
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