Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/2068
DC Field | Value | Language |
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dc.contributor.authorall | Pfeiffer, T.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.contributor.authorall | Costa, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.date.accessioned | 2007-04-02T14:27:33Z | en |
dc.date.available | 2007-04-02T14:27:33Z | en |
dc.date.issued | 2004-11-10 | en |
dc.identifier.uri | http://hdl.handle.net/2122/2068 | en |
dc.description.abstract | A simple semianalytical model was applied to simulate the tephra deposits produced by two Plinian phases called B1 and D1 of the Agnano-Monte Spina eruption (4100BP) within the Campli Flegrei volcanic area in Italy. In this model, the eruption column is assumed to act as a line source in order to neglect complex near/vent interactions. Therefore, the validity of the model is limited to the medium and far areas from the vent (beyond 10-20km), where the assumption of a line source can be justified. The distribution of the particles in the atmosphere is assumed to be only controlled by gravity, wind and eddy diffusion. The model accounts for particles of different types and (juvenile pumice or ash particles, lithic fragments and crystals) within a used-defined range of granulometric classes. The numerically calculated deposit was confronted with the observed deposit. Applying a least/squares method it was tried to optimize input variables such as distribution of particles and mass within the eruption column, wind and diffusion parameters by fitting the computed deposit with the observed one. A good correlation between the numerically calculated and the measured deposit as well as a good agreement between the fitted variables with independently found parameters of the eruption could be achieved. The results allowed to re-estimate eruption parameters such as minimum erupted mass (2-3x1011 kg each), eruption column height (16-23 km for B1, ca. 30 km for D1), grain-size spectrum of erupted tephra, and the wind field at the time of the eruption. | en |
dc.description.sponsorship | INGV | en |
dc.format.extent | 792686 bytes | en |
dc.format.mimetype | application/pdf | en |
dc.language.iso | English | en |
dc.relation.ispartofseries | OV Prot. N. 4440 | en |
dc.subject | Campi Flegrei eruption | en |
dc.subject | Numerical reconstruction | en |
dc.title | A numerical reconstruction of fall deposits from the Agnano-Monte Spina (4100 BP) Plinian eruption in the Campi Flegrei area, Italy | en |
dc.type | report | en |
dc.description.status | Unpublished | en |
dc.type.QualityControl | Unreferred | en |
dc.subject.INGV | 05. General::05.02. Data dissemination::05.02.03. Volcanic eruptions | en |
dc.relation.references | Armienti, P. et al. (1988) A Numerical Model for Simulation of Tephra Transport and Deposition: Application to May 18, 1980, Mount St. Helens Eruption - Journal of Geophysical Research 93, p.6463-6476. Carey, S. and Sparks, R.S.J. (1986) Quantitative models of the fallout and dispersal of tephra from volcanic eruption columns. Bulletin of Volcanology, 48 (2/3), 127-141. Cornell, W., Carey, S., Sigurdsson, H. (1983) Computer simulation and transport of the Campanian Y-5 ash, J. of Volcanology and Geothermal Res., 17, 89-109. De Vita, S. et al. (1991). The Agnano-Monte Spina eruption (4100 years B.P.) in the restless Campi Flegrei caldera. Journal of Volcanology and Geothermal Research, 91, p. 269-301. Macedonio, G. et al. (1988) A Numerical Simulation of the Plinian Fall Phase of 79 A.D. Eruption of Vesuvius - Journal of Geophysical Research, 93, p. 817-827. Macedonio, G. et al. (2003) Hazmap - A computer program for the simulation of ash dispersion from discrete point sources, Osservatorio Vesuviano, Naples. Pfeiffer, T. (2003) Numeric reconstruction of tephra-fall deposits from the 18 august and 16/17 September 1992 eruptions of Crater Peak, Mt. Spurr volcano, Alaska, in: Two catastrophic volcanic eruptions in the Mediterranean – Santorini 1645 B.C. and Vesuvius 79 A.D., Ph.D. thesis, Dep. of Earth Sciences, University of Aarhus, Denmark, 141-183. Pfeiffer, T. , Costa A., Macedonio, G. (2003) A model for the numerical reconstruction of tephra-fall deposits, submitted to the Journal .of Volcanology and Geothermal Research. Suzuki, T. (1983) A theoretical model for dispersion of tephra. In: Volcanism: Physics and Tectonics, edited by D. Shimozuru and I. Yokoyama, pp. 95-113, Arc, Tokyo. Tesauro, M. (2000) Relazione finale per la Borsa di studio annuale Alta Formazione - Progetto “Il Vulcanesimo dell’ area campana in relazione alla dinamica regionale, Osservatorio Vesuviano, Naples. | en |
dc.description.fulltext | open | en |
dc.contributor.author | Pfeiffer, T. | en |
dc.contributor.author | Costa, A. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
item.openairetype | report | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_93fc | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | University of Aarhus, Denmark, Department of Earth Sciences | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia | - |
crisitem.author.orcid | 0000-0002-4987-6471 | - |
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 | - |
Appears in Collections: | Reports |
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pfecos04_report1.pdf | 774.11 kB | Adobe PDF | View/Open |
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