Crustal seismic velocity responds to a magmatic intrusion and seasonal loading in Iceland's Northern Volcanic Zone
Seismic noise interferometry is an exciting technique for studying volcanoes, providing a continuous measurement of seismic velocity changes (dv/v), which are sensitive to magmatic processes that affect the surrounding crust. However, understanding the exact mechanisms causing changes in dv/v is oft...
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Online Access: | http://eprints.esc.cam.ac.uk/4513/ https://advances.sciencemag.org/content/5/11/eaax6642.full https://doi.org/10.1126/sciadv.aax6642 |
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ftucambridgeesc:oai:eprints.esc.cam.ac.uk:4513 2023-05-15T16:49:54+02:00 Crustal seismic velocity responds to a magmatic intrusion and seasonal loading in Iceland's Northern Volcanic Zone Donaldson, Clare Winder, Tom Caudron, Corentin White, Robert S. 2019-07-30 http://eprints.esc.cam.ac.uk/4513/ https://advances.sciencemag.org/content/5/11/eaax6642.full https://doi.org/10.1126/sciadv.aax6642 unknown AAAAS Donaldson, Clare and Winder, Tom and Caudron, Corentin and White, Robert S. (2019) Crustal seismic velocity responds to a magmatic intrusion and seasonal loading in Iceland's Northern Volcanic Zone. Science Advances, 5 (11). ISSN 2375-2548 DOI https://doi.org/10.1126/sciadv.aax6642 <https://doi.org/10.1126/sciadv.aax6642> 02 - Geodynamics Geophysics and Tectonics Article PeerReviewed 2019 ftucambridgeesc https://doi.org/10.1126/sciadv.aax6642 2020-08-27T18:10:03Z Seismic noise interferometry is an exciting technique for studying volcanoes, providing a continuous measurement of seismic velocity changes (dv/v), which are sensitive to magmatic processes that affect the surrounding crust. However, understanding the exact mechanisms causing changes in dv/v is often difficult. We present dv/v measurements over 10 years in central Iceland, measured using single-station cross-component correlation functions from 51 instruments across a range of frequency bands. We observe a linear correlation between changes in dv/v and volumetric strain at stations in regions of both compression and dilatation associated with the 2014 Bárðarbunga-Holuhraun dike intrusion. Furthermore, a clear seasonal cycle in dv/v is modeled as resulting from elastic and poroelastic responses to changing snow thickness, atmospheric pressure, and groundwater level. This study comprehensively explains variations in dv/v arising from diverse crustal stresses and highlights the importance of deformation modeling when interpreting dv/v, with implications for volcano and environmental monitoring worldwide. Article in Journal/Newspaper Iceland University of Cambridge, Department of Earth Sciences: ESC Publications Holuhraun ENVELOPE(-16.831,-16.831,64.852,64.852) Science Advances 5 11 eaax6642 |
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University of Cambridge, Department of Earth Sciences: ESC Publications |
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topic |
02 - Geodynamics Geophysics and Tectonics |
spellingShingle |
02 - Geodynamics Geophysics and Tectonics Donaldson, Clare Winder, Tom Caudron, Corentin White, Robert S. Crustal seismic velocity responds to a magmatic intrusion and seasonal loading in Iceland's Northern Volcanic Zone |
topic_facet |
02 - Geodynamics Geophysics and Tectonics |
description |
Seismic noise interferometry is an exciting technique for studying volcanoes, providing a continuous measurement of seismic velocity changes (dv/v), which are sensitive to magmatic processes that affect the surrounding crust. However, understanding the exact mechanisms causing changes in dv/v is often difficult. We present dv/v measurements over 10 years in central Iceland, measured using single-station cross-component correlation functions from 51 instruments across a range of frequency bands. We observe a linear correlation between changes in dv/v and volumetric strain at stations in regions of both compression and dilatation associated with the 2014 Bárðarbunga-Holuhraun dike intrusion. Furthermore, a clear seasonal cycle in dv/v is modeled as resulting from elastic and poroelastic responses to changing snow thickness, atmospheric pressure, and groundwater level. This study comprehensively explains variations in dv/v arising from diverse crustal stresses and highlights the importance of deformation modeling when interpreting dv/v, with implications for volcano and environmental monitoring worldwide. |
format |
Article in Journal/Newspaper |
author |
Donaldson, Clare Winder, Tom Caudron, Corentin White, Robert S. |
author_facet |
Donaldson, Clare Winder, Tom Caudron, Corentin White, Robert S. |
author_sort |
Donaldson, Clare |
title |
Crustal seismic velocity responds to a magmatic intrusion and seasonal loading in Iceland's Northern Volcanic Zone |
title_short |
Crustal seismic velocity responds to a magmatic intrusion and seasonal loading in Iceland's Northern Volcanic Zone |
title_full |
Crustal seismic velocity responds to a magmatic intrusion and seasonal loading in Iceland's Northern Volcanic Zone |
title_fullStr |
Crustal seismic velocity responds to a magmatic intrusion and seasonal loading in Iceland's Northern Volcanic Zone |
title_full_unstemmed |
Crustal seismic velocity responds to a magmatic intrusion and seasonal loading in Iceland's Northern Volcanic Zone |
title_sort |
crustal seismic velocity responds to a magmatic intrusion and seasonal loading in iceland's northern volcanic zone |
publisher |
AAAAS |
publishDate |
2019 |
url |
http://eprints.esc.cam.ac.uk/4513/ https://advances.sciencemag.org/content/5/11/eaax6642.full https://doi.org/10.1126/sciadv.aax6642 |
long_lat |
ENVELOPE(-16.831,-16.831,64.852,64.852) |
geographic |
Holuhraun |
geographic_facet |
Holuhraun |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
Donaldson, Clare and Winder, Tom and Caudron, Corentin and White, Robert S. (2019) Crustal seismic velocity responds to a magmatic intrusion and seasonal loading in Iceland's Northern Volcanic Zone. Science Advances, 5 (11). ISSN 2375-2548 DOI https://doi.org/10.1126/sciadv.aax6642 <https://doi.org/10.1126/sciadv.aax6642> |
op_doi |
https://doi.org/10.1126/sciadv.aax6642 |
container_title |
Science Advances |
container_volume |
5 |
container_issue |
11 |
container_start_page |
eaax6642 |
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1766040073865789440 |