Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/4980| 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 | Ganci, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
| dc.date.accessioned | 2009-03-26T12:59:39Z | en |
| dc.date.available | 2009-03-26T12:59:39Z | en |
| dc.date.issued | 2008-02 | en |
| dc.identifier.uri | http://hdl.handle.net/2122/4980 | en |
| dc.description.abstract | An elastic 3-D axi-symmetric model based on Finite Element Method (FEM) is proposed to compute ground deformation and gravity changes caused by overpressure sources in volcanic areas. The numerical computations are focused on the modeling of a complex description of Mt Etna in order to evaluate the effect of topography, medium heterogeneities and source geometries. Both ground deformation and gravity changes are investigated by solving a coupled numerical problem considering a simplified ground surface profile and a multi-layered crustal structure inferred from seismic tomography. The role of the source geometry is also explored taking into account spherical and ellipsoidal volumetric sources. The comparison between numerical results and those predicted by analytical solutions disclosed significant discrepancies. These differences constrain the applicability of simple spherical source and homogeneous half-space hypotheses, which are usually implicitly assumed when analytical solutions are applied. | en |
| dc.language.iso | English | en |
| dc.relation.ispartof | Annals of Geophysics | en |
| dc.relation.ispartofseries | 1/51 (2008) | en |
| dc.subject | numerical modeling | en |
| dc.subject | gravity anomaly | en |
| dc.title | Finite element modeling of ground deformation and gravity field at Mt. Etna | en |
| dc.type | article | en |
| dc.description.status | Published | en |
| dc.type.QualityControl | Peer-reviewed | en |
| dc.subject.INGV | 05. General::05.05. Mathematical geophysics::05.05.99. General or miscellaneous | en |
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GRECO (2003): Bulk processes some months before the start of the 2001 Mt Etna eruption, evidenced throught microgravity studies, J. Geophys. Res., 108 (B12), 2556, doi: 10.1029/ 2003JB002542. CARBONE, D., G. CURRENTI and C. DEL NEGRO (2006): Elastic model for the gravity and elevation changes prior to the 2001 eruption of Etna volcano, Bull. Volcanol. (in press). CAI, Y. and C.Y. Wang (2005): Fast finite-element calculation of gravity anomaly in complex geological regions, Geophys. J. Int., 162, 696-708. CAYOL, V. and F.H. CORNET (1998): Effects of topography on the interpretation of the deformation field of prominent volcanoes-Application to Etna, Geophys. Res. Lett., 25 (11), 11,979-11,982. CHARCO, M., J. FERNANDEZ, F. LUZÓN and J.B. Rundle (2006): On the relative importance of self-gravitation and elasticity in modeling volcanic ground deformation and gravity changes, J. Geophys. Res., 111, B03404, doi:10.1029/2005JB003754. CHARCO, M., F. LUZÓN, J. FERNÁNDEZ and K.F. TIAMPO (2007): Topography and self-gravitation interaction in elastic-gravitational modeling, Geochem. Geophys. Geosyst., 8, Q01001, doi: 10.1029/2006GC001412 CHIARABBA, C., A. AMATO, E. BOSCHI and F. BARBERI (2000): Recent seismicity and tomographic modeling of the Mt. Etna plumbing system, J. Geophys. Res., 105 (B5), 10,923-10,938. CLARK, D.A., S.J. SAUL and D.W. EMERSON (1986): Magnetic and gravity anomalies of a triaxial ellipsoid, Explor. Geophys., 17, 189-200. CORSARO, R. and M. POMPILIO (2003): Buoyancy-controlled eruption of magmas at Mt. Etna, Terra Nova, 16, 16-22. DVORAK, J.J. and D. DZURISIN (1997): Volcano geodesy: the search for magma reservoirs and the formation of eruptive vents, Rev. Geophys., 35, 343-384. FERNÁNDEZ, J., J.M. CARRASCO, J.B. RUNDLE and V. ARANA (1999): Geodetic methods for detecting volcanic unrest: a theoretical approach, Bull. Volcanol., 60, 534-544. GOTTSMANN, J., H. RYMER and G. 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(1958): Relations between the eruptions of various volcanos and the deformations of the ground surfaces around them, Bull. Earthq. Res. Inst., Univ. Tokyo, 36, 99-134. MURASE, M., M. IRWAN, S. KARIYA, T. TABEI, T. OKUDA, R. MIYAJIMA, J. OIKAWA, H. WATANABE, T. KATO, S. NAKAO, M. UKAWA, E. FUJITA, M. OKAYAMA, E. KIMATA and N. FUJII (2006): Time dependent model of magma intrusion in and around Miyake and Kozu Islands, Central Japan in June-August, 2000, J. Volcanol. Geotherm. Res., 150, 213-231. OKUBO, S. (1992): Gravity and Potential Changes due to Shear and Tensile Faults in a Half-Space, J. Geophys. Res., 97 (B5), 7137-7144. OKUBO, S. and H. WATANABE (1989): Gravity change caused by a fissure eruption, Geophys. Res. Lett., 16, 445-448. RUNDLE, J.B. (1980): Static elastic-gravitational deformation of a layered half space by point couple sources, J. Geoph. Res., 85, 5355-5363. RUSSO, G. and G. GIBERTI (2004): Numerical modeling of surface deformations on Mt. Vesuvius volcano (Italy) in presence of asymmmetric elastic heterogeneities, J. Volcanol. Geotherm. Res., 133, 41-54. TIAMPO, K.F., J. FERNANDEZ, G. JENTZSCH, M. CHARCO and J.B. RUNDLE (2004): New results at Mayon, Philippines, from a joint inversion of gravity and deformation measurements, Pure Appl. Geophys., 161, 1433- 1452. VOIGHT, B., R. HOBLITT, A. CLARKE, A. LOCKHART, A. MILLER, L. LYNCH and J. MCMAHON (1998): Remarkable cyclic ground deformation monitored in real-time on Montserrat, and its use in eruption forecasting, Geophys. Res. Lett., 24, 3405-3408. WALSH, J.B. and J.R. RICE (1979): Local changes in gravity resulting from deformation, J. Geophys. Res., 84, 165-170. WILLIAMS, C.A. and G. WADGE (1998): The effects of topography on magma chamber deformation models: application to Mt. Etna and radar interferometry, Geophys. Res. Lett., 25, 1549-1552. WILLIAMS, C.A. and G. WADGE (2000): 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. ZHANG, J., C.Y. WANG, Y. SHI, Y. CAI, W.C. CHI, D. DREGER, W.B. CHENG and Y.H. YUAN (2004): Threedimensional crustal structure in central Taiwan from gravity inversion with a parallel genetic algorithm, Geophysics, 69 (4), 917-924. | 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 | open | en |
| dc.contributor.author | Currenti, G. | en |
| dc.contributor.author | Del Negro, C. | en |
| dc.contributor.author | Ganci, G. | 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 | open | - |
| 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.orcid | 0000-0001-8650-5613 | - |
| crisitem.author.orcid | 0000-0001-5734-9025 | - |
| crisitem.author.orcid | 0000-0002-9914-1107 | - |
| 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 | 05. General | - |
| 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: | Annals of Geophysics | |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| currenti et al.pdf | 2.26 MB | Adobe PDF | View/Open |
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