Investigating La Réunion Hot Spot From Crust to Core
International audience Whether volcanic intraplate hot spots are underlain by deep mantle plumes continues to be debated 40 years after the hypothesis was proposed by Morgan [1972]. Arrivals of buoyant plume heads may have been among the most disruptive agents in Earth's history, initiating con...
Published in: | Eos, Transactions American Geophysical Union |
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Online Access: | https://hal.univ-reunion.fr/hal-01236083 https://hal.univ-reunion.fr/hal-01236083/document https://hal.univ-reunion.fr/hal-01236083/file/Barruol_Sigloch_RHUM_RUM.pdf https://doi.org/10.1002/2013eo230002 |
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ftunivnantes:oai:HAL:hal-01236083v1 2023-05-15T16:09:40+02:00 Investigating La Réunion Hot Spot From Crust to Core Barruol, Guilhem Sigloch, Karin Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) Laboratoire GéoSciences Réunion (LGSR) Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris) Department of Geosciences Princeton Princeton University Ludwig-Maximilians-Universität München (LMU) 2013-06 https://hal.univ-reunion.fr/hal-01236083 https://hal.univ-reunion.fr/hal-01236083/document https://hal.univ-reunion.fr/hal-01236083/file/Barruol_Sigloch_RHUM_RUM.pdf https://doi.org/10.1002/2013eo230002 en eng HAL CCSD American Geophysical Union (AGU) info:eu-repo/semantics/altIdentifier/doi/10.1002/2013eo230002 hal-01236083 https://hal.univ-reunion.fr/hal-01236083 https://hal.univ-reunion.fr/hal-01236083/document https://hal.univ-reunion.fr/hal-01236083/file/Barruol_Sigloch_RHUM_RUM.pdf doi:10.1002/2013eo230002 info:eu-repo/semantics/OpenAccess ISSN: 0096-3941 EISSN: 2324-9250 Eos, Transactions American Geophysical Union https://hal.univ-reunion.fr/hal-01236083 Eos, Transactions American Geophysical Union, 2013, 94 (23), ⟨10.1002/2013eo230002⟩ [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] info:eu-repo/semantics/article Journal articles 2013 ftunivnantes https://doi.org/10.1002/2013eo230002 2023-02-01T01:18:37Z International audience Whether volcanic intraplate hot spots are underlain by deep mantle plumes continues to be debated 40 years after the hypothesis was proposed by Morgan [1972]. Arrivals of buoyant plume heads may have been among the most disruptive agents in Earth's history, initiating continental breakup, altering global climate , and triggering mass extinctions. Further, with the temporary shutdown of European air traffi c in 2010 caused by the eruption of Eyjafjallajökull, a geologically routine eruption in the tail end of the presumed Iceland plume, the world witnessed an intrusion of hot spot activity into modern-day life. The larger interest in intraplate hot spots stems from the suspicion that their volcanism is fueled by mantle plumes, which are deep-seated, columnar upwellings of hot rock, possibly originating from the core-mantle boundary. Depending on their numbers and typical heat fl uxes, mantle plumes could be major factors in Earth's heat budget, providing direct cooling to the core. Seismology could settle the controversy regarding their existence and signifi cance by imaging plume conduits—or lack thereof—in situ, but the most promising hot spots are located well into the oceans, and large-scale instrumentation of the seafl oor has been coming into reach only recently. In an effort to learn more about plume origins and dynamics through seismology, scientists from France and Germany are focusing on the Indian Ocean's La Réunion Island. Its close proximity to major landmasses (Madagascar and mainland Africa) allows for excellent seismic illumination, reducing the need for expensive ocean bottom sensors to record earthquakes around the globe. The Réunion Hotspot and Upper Mantle– Réunions Unterer Mantel (RHUM-RUM) project aims to seismologically image the crust and mantle under the island at all depths. Through what is thus far the most expansive attempt to work out the deep plumbing of hot spots, RHUM-RUM scientists may be able to clarify the feeding mechanism for hot spot volcanism, ... Article in Journal/Newspaper Eyjafjallajökull Iceland Université de Nantes: HAL-UNIV-NANTES Indian Eos, Transactions American Geophysical Union 94 23 205 207 |
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Université de Nantes: HAL-UNIV-NANTES |
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ftunivnantes |
language |
English |
topic |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
spellingShingle |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] Barruol, Guilhem Sigloch, Karin Investigating La Réunion Hot Spot From Crust to Core |
topic_facet |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
description |
International audience Whether volcanic intraplate hot spots are underlain by deep mantle plumes continues to be debated 40 years after the hypothesis was proposed by Morgan [1972]. Arrivals of buoyant plume heads may have been among the most disruptive agents in Earth's history, initiating continental breakup, altering global climate , and triggering mass extinctions. Further, with the temporary shutdown of European air traffi c in 2010 caused by the eruption of Eyjafjallajökull, a geologically routine eruption in the tail end of the presumed Iceland plume, the world witnessed an intrusion of hot spot activity into modern-day life. The larger interest in intraplate hot spots stems from the suspicion that their volcanism is fueled by mantle plumes, which are deep-seated, columnar upwellings of hot rock, possibly originating from the core-mantle boundary. Depending on their numbers and typical heat fl uxes, mantle plumes could be major factors in Earth's heat budget, providing direct cooling to the core. Seismology could settle the controversy regarding their existence and signifi cance by imaging plume conduits—or lack thereof—in situ, but the most promising hot spots are located well into the oceans, and large-scale instrumentation of the seafl oor has been coming into reach only recently. In an effort to learn more about plume origins and dynamics through seismology, scientists from France and Germany are focusing on the Indian Ocean's La Réunion Island. Its close proximity to major landmasses (Madagascar and mainland Africa) allows for excellent seismic illumination, reducing the need for expensive ocean bottom sensors to record earthquakes around the globe. The Réunion Hotspot and Upper Mantle– Réunions Unterer Mantel (RHUM-RUM) project aims to seismologically image the crust and mantle under the island at all depths. Through what is thus far the most expansive attempt to work out the deep plumbing of hot spots, RHUM-RUM scientists may be able to clarify the feeding mechanism for hot spot volcanism, ... |
author2 |
Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) Laboratoire GéoSciences Réunion (LGSR) Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris) Department of Geosciences Princeton Princeton University Ludwig-Maximilians-Universität München (LMU) |
format |
Article in Journal/Newspaper |
author |
Barruol, Guilhem Sigloch, Karin |
author_facet |
Barruol, Guilhem Sigloch, Karin |
author_sort |
Barruol, Guilhem |
title |
Investigating La Réunion Hot Spot From Crust to Core |
title_short |
Investigating La Réunion Hot Spot From Crust to Core |
title_full |
Investigating La Réunion Hot Spot From Crust to Core |
title_fullStr |
Investigating La Réunion Hot Spot From Crust to Core |
title_full_unstemmed |
Investigating La Réunion Hot Spot From Crust to Core |
title_sort |
investigating la réunion hot spot from crust to core |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://hal.univ-reunion.fr/hal-01236083 https://hal.univ-reunion.fr/hal-01236083/document https://hal.univ-reunion.fr/hal-01236083/file/Barruol_Sigloch_RHUM_RUM.pdf https://doi.org/10.1002/2013eo230002 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Eyjafjallajökull Iceland |
genre_facet |
Eyjafjallajökull Iceland |
op_source |
ISSN: 0096-3941 EISSN: 2324-9250 Eos, Transactions American Geophysical Union https://hal.univ-reunion.fr/hal-01236083 Eos, Transactions American Geophysical Union, 2013, 94 (23), ⟨10.1002/2013eo230002⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/2013eo230002 hal-01236083 https://hal.univ-reunion.fr/hal-01236083 https://hal.univ-reunion.fr/hal-01236083/document https://hal.univ-reunion.fr/hal-01236083/file/Barruol_Sigloch_RHUM_RUM.pdf doi:10.1002/2013eo230002 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/2013eo230002 |
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Eos, Transactions American Geophysical Union |
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94 |
container_issue |
23 |
container_start_page |
205 |
op_container_end_page |
207 |
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