Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/7151| DC Field | Value | Language |
|---|---|---|
| dc.contributor.authorall | Camacho, A. G.; Instituto de Astronomía y Geodesia, CSIC‐UCM, Madrid, Spain. | en |
| dc.contributor.authorall | González, P. J.; Department of Earth Sciences, University of Western Ontario, London, Ontario, Canada | en |
| dc.contributor.authorall | Fernández, J.; Instituto de Astronomía y Geodesia, CSIC‐UCM, Madrid, Spain. | en |
| dc.contributor.authorall | Berrino, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
| dc.date.accessioned | 2011-10-07T09:19:58Z | en |
| dc.date.available | 2011-10-07T09:19:58Z | en |
| dc.date.issued | 2011 | en |
| dc.identifier.uri | http://hdl.handle.net/2122/7151 | en |
| dc.description.abstract | Changes in gravity and/or surface deformation are often associated with volcanic activity. Usually, bodies with simple geometry (e.g., point sources, prolate or oblate spheroids) are used to model these signals considering anomalous mass and/or pressure variations. We present a new method for the simultaneous, nonlinear inversion of gravity changes and surface deformation using bodies with a free geometry. Assuming simple homogenous elastic conditions, the method determines a general geometrical configuration of pressure and density sources. These sources are described as an aggregate of pressure and density point sources, fitting the whole data set (given some regularity conditions). The approach works in a growth step‐by‐step process that allows us to build very general geometrical configurations. The methodology is validated against an ellipsoidal body with anomalous pressure and a parallelepiped body with anomalous density, buried in an elastic medium. The simultaneous inversion of deformation and gravity values permits a good reconstruction of the assumed bodies. Finally, the inversion method is applied to the interpretation of gravity, leveling, and interferometric synthetic aperture radar (InSAR) data from the volcanic area of Campi Flegrei (Italy) for the period 1992–2000. For this period, a model with no significant mass change and an extended decreasing pressure region satisfactorily fits the data. The pressure source is located at about ∼1500 m depth, and it is interpreted as corresponding to the dynamics of the shallow (depth 1–2 km) hydrothermal system confined to the caldera fill materials. | en |
| dc.language.iso | English | en |
| dc.publisher.name | The American Geophysical Union | en |
| dc.relation.ispartof | Journal of Geophysical Research | en |
| dc.relation.ispartofseries | /116 (2011) | en |
| dc.subject | Simultaneous inversion | en |
| dc.subject | deformation | en |
| dc.subject | gravity changes | en |
| dc.subject | deforming calderas | en |
| dc.title | Simultaneous inversion of surface deformation and gravity changes by means of extended bodies with a free geometry: Application to deforming calderas | en |
| dc.type | article | en |
| dc.description.status | Published | en |
| dc.type.QualityControl | Peer-reviewed | en |
| dc.description.pagenumber | B10401 | en |
| dc.subject.INGV | 04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations | en |
| dc.subject.INGV | 04. Solid Earth::04.03. Geodesy::04.03.05. Gravity variations | en |
| dc.subject.INGV | 04. Solid Earth::04.03. Geodesy::04.03.06. Measurements and monitoring | en |
| dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring | en |
| dc.subject.INGV | 05. General::05.01. Computational geophysics::05.01.05. Algorithms and implementation | en |
| dc.identifier.doi | 10.1029/2010JB008165, 2011 | en |
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Res., 112, B07402, doi:10.1029/ 2006JB004641. Walsh, J. B., and J. R. Rice (1979), Local changes in gravity resulting from deformation, J. Geophys. Res. , 84, 165–170, doi:10.1029/ JB084iB01p00165. 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, doi:10.1029/ 98GL01136. | 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 | Camacho, A. G. | en |
| dc.contributor.author | González, P. J. | en |
| dc.contributor.author | Fernández, J. | en |
| dc.contributor.author | Berrino, G. | en |
| dc.contributor.department | Instituto de Astronomía y Geodesia, CSIC‐UCM, Madrid, Spain. | en |
| dc.contributor.department | Department of Earth Sciences, University of Western Ontario, London, Ontario, Canada | en |
| dc.contributor.department | Instituto de Astronomía y Geodesia, CSIC‐UCM, Madrid, Spain. | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, 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 | Instituto de Astronomía y Geodesia, CSIC‐UCM, Madrid, Spain. | - |
| crisitem.author.dept | Instituto de Geocencias (IGEO) (CSIC, UCM) | - |
| crisitem.author.orcid | 0000-0002-4703-2435 | - |
| crisitem.classification.parent | 04. Solid Earth | - |
| crisitem.classification.parent | 04. Solid Earth | - |
| crisitem.classification.parent | 04. Solid Earth | - |
| crisitem.classification.parent | 04. Solid Earth | - |
| crisitem.classification.parent | 05. General | - |
| crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| Appears in Collections: | Article published / in press | |
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