Self-sustained vibrations in volcanic areas extracted by Independent Component Analysis: a review and new results
We investigate the physical processes associated with volcanic tremor and explosions. A volcano is a complex system where a fluid source interacts with the solid edifice so generating seismic waves in a regime of low turbulence. Although the complex behavior escapes a simple universal description, t...
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ftunivnapoliiris:oai:www.iris.unina.it:11588/874194 2024-02-11T09:56:55+01:00 Self-sustained vibrations in volcanic areas extracted by Independent Component Analysis: a review and new results DE LAURO E DE MARTINO S FALANGA M PALO M DE LAURO, E DE MARTINO, S Falanga, M Palo, M 2011 http://hdl.handle.net/11588/874194 https://doi.org/10.5194/npg-18-925-2011 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000298367500013 volume:18 firstpage:925 lastpage:940 numberofpages:16 journal:NONLINEAR PROCESSES IN GEOPHYSICS http://hdl.handle.net/11588/874194 doi:10.5194/npg-18-925-2011 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-83455214044 info:eu-repo/semantics/closedAccess earthquake volcano Independent Component Analysis Neural Network Unsupervised machine learning info:eu-repo/semantics/article 2011 ftunivnapoliiris https://doi.org/10.5194/npg-18-925-2011 2024-01-23T23:39:53Z We investigate the physical processes associated with volcanic tremor and explosions. A volcano is a complex system where a fluid source interacts with the solid edifice so generating seismic waves in a regime of low turbulence. Although the complex behavior escapes a simple universal description, the phases of activity generate stable (self-sustained) oscillations that can be described as a non-linear dynamical system of low dimensionality. So, the system requires to be investigated with non-linear methods able to individuate, decompose, and extract the main characteristics of the phenomenon. Independent Component Analysis (ICA), an entropy-based technique is a good candidate for this purpose. Here, we review the results of ICA applied to seismic signals acquired in some volcanic areas. We emphasize analogies and differences among the self-oscillations individuated in three cases: Stromboli (Italy), Erebus (Antarctica) and Volcán de Colima (Mexico). The waveforms of the extracted independent components are specific for each volcano, whereas the similarity can be ascribed to a very general common source mechanism involving the interaction between gas/magma flow and solid structures (the volcanic edifice). Indeed, chocking phenomena or inhomogeneities in the volcanic cavity can play the same role in generating self-oscillations as the languid and the reed do in musical instruments. The understanding of these background oscillations is relevant not only for explaining the volcanic source process and to make a forecast into the future, but sheds light on the physics of complex systems developing low turbulence. Article in Journal/Newspaper Antarc* Antarctica IRIS Università degli Studi di Napoli Federico II Nonlinear Processes in Geophysics 18 6 925 940 |
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Open Polar |
collection |
IRIS Università degli Studi di Napoli Federico II |
op_collection_id |
ftunivnapoliiris |
language |
English |
topic |
earthquake volcano Independent Component Analysis Neural Network Unsupervised machine learning |
spellingShingle |
earthquake volcano Independent Component Analysis Neural Network Unsupervised machine learning DE LAURO E DE MARTINO S FALANGA M PALO M Self-sustained vibrations in volcanic areas extracted by Independent Component Analysis: a review and new results |
topic_facet |
earthquake volcano Independent Component Analysis Neural Network Unsupervised machine learning |
description |
We investigate the physical processes associated with volcanic tremor and explosions. A volcano is a complex system where a fluid source interacts with the solid edifice so generating seismic waves in a regime of low turbulence. Although the complex behavior escapes a simple universal description, the phases of activity generate stable (self-sustained) oscillations that can be described as a non-linear dynamical system of low dimensionality. So, the system requires to be investigated with non-linear methods able to individuate, decompose, and extract the main characteristics of the phenomenon. Independent Component Analysis (ICA), an entropy-based technique is a good candidate for this purpose. Here, we review the results of ICA applied to seismic signals acquired in some volcanic areas. We emphasize analogies and differences among the self-oscillations individuated in three cases: Stromboli (Italy), Erebus (Antarctica) and Volcán de Colima (Mexico). The waveforms of the extracted independent components are specific for each volcano, whereas the similarity can be ascribed to a very general common source mechanism involving the interaction between gas/magma flow and solid structures (the volcanic edifice). Indeed, chocking phenomena or inhomogeneities in the volcanic cavity can play the same role in generating self-oscillations as the languid and the reed do in musical instruments. The understanding of these background oscillations is relevant not only for explaining the volcanic source process and to make a forecast into the future, but sheds light on the physics of complex systems developing low turbulence. |
author2 |
DE LAURO, E DE MARTINO, S Falanga, M Palo, M |
format |
Article in Journal/Newspaper |
author |
DE LAURO E DE MARTINO S FALANGA M PALO M |
author_facet |
DE LAURO E DE MARTINO S FALANGA M PALO M |
author_sort |
DE LAURO E |
title |
Self-sustained vibrations in volcanic areas extracted by Independent Component Analysis: a review and new results |
title_short |
Self-sustained vibrations in volcanic areas extracted by Independent Component Analysis: a review and new results |
title_full |
Self-sustained vibrations in volcanic areas extracted by Independent Component Analysis: a review and new results |
title_fullStr |
Self-sustained vibrations in volcanic areas extracted by Independent Component Analysis: a review and new results |
title_full_unstemmed |
Self-sustained vibrations in volcanic areas extracted by Independent Component Analysis: a review and new results |
title_sort |
self-sustained vibrations in volcanic areas extracted by independent component analysis: a review and new results |
publishDate |
2011 |
url |
http://hdl.handle.net/11588/874194 https://doi.org/10.5194/npg-18-925-2011 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000298367500013 volume:18 firstpage:925 lastpage:940 numberofpages:16 journal:NONLINEAR PROCESSES IN GEOPHYSICS http://hdl.handle.net/11588/874194 doi:10.5194/npg-18-925-2011 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-83455214044 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.5194/npg-18-925-2011 |
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Nonlinear Processes in Geophysics |
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18 |
container_issue |
6 |
container_start_page |
925 |
op_container_end_page |
940 |
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