Reconstruction of the geometry of volcanic vents by trajectory tracking of fast ejecta - The case of the Eyjafjallajökull 2010 eruption (Iceland)
Two methods are introduced to estimate the depth of origin of ejecta trajectories (depth to magma level in conduit) and the diameter of a conduit in an erupting crater, using analysis of videos from the Eyjafjallajökull 2010 eruption to evaluate their applicability. Both methods rely on the identif...
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Online Access: | http://hdl.handle.net/11586/167452 https://doi.org/10.1186/s40623-015-0243-x http://rd.springer.com/journal/40623 |
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ftunivbari:oai:ricerca.uniba.it:11586/167452 2024-04-21T08:05:49+00:00 Reconstruction of the geometry of volcanic vents by trajectory tracking of fast ejecta - The case of the Eyjafjallajökull 2010 eruption (Iceland) Dürig, Tobias Gudmundsson, Magnus T. DELLINO, Pierfrancesco Dürig, Tobia Gudmundsson, Magnus T. Dellino, Pierfrancesco 2015 http://hdl.handle.net/11586/167452 https://doi.org/10.1186/s40623-015-0243-x http://rd.springer.com/journal/40623 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000354706000001 volume:67 issue:1 journal:EARTH PLANETS AND SPACE http://hdl.handle.net/11586/167452 doi:10.1186/s40623-015-0243-x info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84930205509 http://rd.springer.com/journal/40623 info:eu-repo/semantics/closedAccess Ejecta trajectory tracking Eruption source parameter Explosive volcanism Near-field monitoring Pulsating explosive eruption Vent geometry Video analysi Geology Space and Planetary Science info:eu-repo/semantics/article 2015 ftunivbari https://doi.org/10.1186/s40623-015-0243-x 2024-03-28T01:19:05Z Two methods are introduced to estimate the depth of origin of ejecta trajectories (depth to magma level in conduit) and the diameter of a conduit in an erupting crater, using analysis of videos from the Eyjafjallajökull 2010 eruption to evaluate their applicability. Both methods rely on the identification of straight, initial trajectories of fast ejecta, observed near the crater rims before they are appreciably bent by air drag and gravity. In the first method, through tracking these straight trajectories and identifying a cut-off angle, the inner diameter and the depth level of the vent can be constrained. In the second method, the intersection point of straight trajectories from individual pulses is used to determine the maximum possible depth from which the tracked ejecta originated and the width of the region from which the pulses emanated. The two methods give nearly identical results on the depth to magma level in the crater of Eyjafjallajökull on 8 to 10 May of 51 ± 7 m. The inner vent diameter, at the level of origin of the pulses and ejecta, is found to have been 8 to 15 m. These methods open up the possibility to feed (near) real-time monitoring systems with otherwise inaccessible information about vent geometry during an ongoing eruption and help defining important eruption source parameters. Article in Journal/Newspaper Iceland Università degli Studi di Bari Aldo Moro: CINECA IRIS Earth, Planets and Space 67 1 |
institution |
Open Polar |
collection |
Università degli Studi di Bari Aldo Moro: CINECA IRIS |
op_collection_id |
ftunivbari |
language |
English |
topic |
Ejecta trajectory tracking Eruption source parameter Explosive volcanism Near-field monitoring Pulsating explosive eruption Vent geometry Video analysi Geology Space and Planetary Science |
spellingShingle |
Ejecta trajectory tracking Eruption source parameter Explosive volcanism Near-field monitoring Pulsating explosive eruption Vent geometry Video analysi Geology Space and Planetary Science Dürig, Tobias Gudmundsson, Magnus T. DELLINO, Pierfrancesco Reconstruction of the geometry of volcanic vents by trajectory tracking of fast ejecta - The case of the Eyjafjallajökull 2010 eruption (Iceland) |
topic_facet |
Ejecta trajectory tracking Eruption source parameter Explosive volcanism Near-field monitoring Pulsating explosive eruption Vent geometry Video analysi Geology Space and Planetary Science |
description |
Two methods are introduced to estimate the depth of origin of ejecta trajectories (depth to magma level in conduit) and the diameter of a conduit in an erupting crater, using analysis of videos from the Eyjafjallajökull 2010 eruption to evaluate their applicability. Both methods rely on the identification of straight, initial trajectories of fast ejecta, observed near the crater rims before they are appreciably bent by air drag and gravity. In the first method, through tracking these straight trajectories and identifying a cut-off angle, the inner diameter and the depth level of the vent can be constrained. In the second method, the intersection point of straight trajectories from individual pulses is used to determine the maximum possible depth from which the tracked ejecta originated and the width of the region from which the pulses emanated. The two methods give nearly identical results on the depth to magma level in the crater of Eyjafjallajökull on 8 to 10 May of 51 ± 7 m. The inner vent diameter, at the level of origin of the pulses and ejecta, is found to have been 8 to 15 m. These methods open up the possibility to feed (near) real-time monitoring systems with otherwise inaccessible information about vent geometry during an ongoing eruption and help defining important eruption source parameters. |
author2 |
Dürig, Tobia Gudmundsson, Magnus T. Dellino, Pierfrancesco |
format |
Article in Journal/Newspaper |
author |
Dürig, Tobias Gudmundsson, Magnus T. DELLINO, Pierfrancesco |
author_facet |
Dürig, Tobias Gudmundsson, Magnus T. DELLINO, Pierfrancesco |
author_sort |
Dürig, Tobias |
title |
Reconstruction of the geometry of volcanic vents by trajectory tracking of fast ejecta - The case of the Eyjafjallajökull 2010 eruption (Iceland) |
title_short |
Reconstruction of the geometry of volcanic vents by trajectory tracking of fast ejecta - The case of the Eyjafjallajökull 2010 eruption (Iceland) |
title_full |
Reconstruction of the geometry of volcanic vents by trajectory tracking of fast ejecta - The case of the Eyjafjallajökull 2010 eruption (Iceland) |
title_fullStr |
Reconstruction of the geometry of volcanic vents by trajectory tracking of fast ejecta - The case of the Eyjafjallajökull 2010 eruption (Iceland) |
title_full_unstemmed |
Reconstruction of the geometry of volcanic vents by trajectory tracking of fast ejecta - The case of the Eyjafjallajökull 2010 eruption (Iceland) |
title_sort |
reconstruction of the geometry of volcanic vents by trajectory tracking of fast ejecta - the case of the eyjafjallajökull 2010 eruption (iceland) |
publishDate |
2015 |
url |
http://hdl.handle.net/11586/167452 https://doi.org/10.1186/s40623-015-0243-x http://rd.springer.com/journal/40623 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000354706000001 volume:67 issue:1 journal:EARTH PLANETS AND SPACE http://hdl.handle.net/11586/167452 doi:10.1186/s40623-015-0243-x info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84930205509 http://rd.springer.com/journal/40623 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1186/s40623-015-0243-x |
container_title |
Earth, Planets and Space |
container_volume |
67 |
container_issue |
1 |
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1796945198231584768 |