Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/5322| DC Field | Value | Language |
|---|---|---|
| dc.contributor.authorall | Currenti, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
| dc.contributor.authorall | Del Negro, C.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
| dc.contributor.authorall | Di Stefano, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
| dc.contributor.authorall | Napoli, R.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
| dc.date.accessioned | 2009-12-04T09:49:41Z | en |
| dc.date.available | 2009-12-04T09:49:41Z | en |
| dc.date.issued | 2009 | en |
| dc.identifier.uri | http://hdl.handle.net/2122/5322 | en |
| dc.description.abstract | 3-D magneto-elastic models based on finite element method (FEM) have been developed to compute piezomagnetic fields caused by magmatic overpressure sources.We solved separately (i) the elastostatic equation for the stress field and (ii) the coupled Poisson’s equation for magnetic potential field. The numerical computationswere focused on a more realistic modelling of Etna volcano, where remarkable magnetic changes have been observed during eruptive events. We evaluated the effects of topography and medium heterogeneities considering different multilayered crustal structures constrained by seismic tomography and geological evidences. When topography and magneto-elastic heterogeneities are included in the numerical models,the piezomagnetic field changes show significant deviations from the homogeneous half-space solution. Generally, it was found that the analytical model overestimates the expected magnetic changes. The numerical models of the piezomagnetic field showed significant differences in presence of strong magnetization contrasts and in proximity of steep cliffs, that is, at the volcano summit. The FEM approach presented here allows considering a picture of a fully 3-D model of Etna volcano, which could advance the reliability of model-based assessments of magnetic observations. | en |
| dc.language.iso | English | en |
| dc.publisher.name | Blackwell Publishing | en |
| dc.relation.ispartof | Geophysical Journal International | en |
| dc.relation.ispartofseries | /179 (2009) | en |
| dc.subject | Numerical solutions | en |
| dc.subject | Magnetic anomalies: modeling and interpretation | en |
| dc.subject | Volcano monitoring | en |
| dc.title | Numerical simulation of stress induced piezomagnetic fields at Etna volcano | en |
| dc.type | article | en |
| dc.description.status | Published | en |
| dc.type.QualityControl | Peer-reviewed | en |
| dc.description.pagenumber | 1469-1476 | en |
| dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring | en |
| dc.identifier.doi | 10.1111/j.1365-246X.2009.04381.x | en |
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An accurate and efficient method for including the effects of topography in three-dimensional elastic models of ground deformation with applications to radar interferometry, J. Geophys. Res., 105(B4), doi: 10.1029/1999JB900307. issn: 0148-0227. YAMAZAKI, A. and T. SAKAI, 2006, Piezomagnetic field associated with the Mogi model considering topographic effects, (in Japanese with English abstract), Papers in Meteorology and Geophysics, 57, 21-36. ZLOTNICKI, J. and CORNET, F.H., 1986. A numerical model of earthquake-induced piezomagnetic anomalies. J. Geophys. Res., 91 (B1), 709-718. | en |
| dc.description.obiettivoSpecifico | 2.6. TTC - Laboratorio di gravimetria, magnetismo ed elettromagnetismo in aree attive | en |
| dc.description.journalType | JCR Journal | en |
| dc.description.fulltext | reserved | en |
| dc.contributor.author | Currenti, G. | en |
| dc.contributor.author | Del Negro, C. | en |
| dc.contributor.author | Di Stefano, A. | en |
| dc.contributor.author | Napoli, R. | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
| item.openairetype | article | - |
| item.cerifentitytype | Publications | - |
| item.languageiso639-1 | en | - |
| item.grantfulltext | restricted | - |
| item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
| item.fulltext | With Fulltext | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
| crisitem.author.orcid | 0000-0001-8650-5613 | - |
| crisitem.author.orcid | 0000-0001-5734-9025 | - |
| crisitem.author.orcid | 0000-0001-8304-3118 | - |
| crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.classification.parent | 04. Solid Earth | - |
| crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| Appears in Collections: | Article published / in press | |
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| Currenti et al GJI 2009.pdf | 656.82 kB | Adobe PDF |
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