Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/503
DC Field | Value | Language |
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dc.contributor.authorall | Tort, A.; Laboratoire Magmas et Volcans, Universite´ Blaise Pascal et CNRS, OPGC, IRD, 5 rue Kessler, 63038 Clermont-Ferrand, France | en |
dc.contributor.authorall | Finizola, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
dc.date.accessioned | 2005-10-28T10:21:26Z | en |
dc.date.available | 2005-10-28T10:21:26Z | en |
dc.date.issued | 2005 | en |
dc.identifier.uri | http://hdl.handle.net/2122/503 | en |
dc.description.abstract | This survey proposes a new approach to identify buried caldera boundaries of a volcanic cone, combining (1) a systematic elliptic Fourier functions (EFF) analysis on the contour lines based on the external shape of the edifice with (2) self-potential (SP) measurements on volcano flanks. The methodology of this approach is to investigate the relationships between (1) vertical morphological changes inferred from EFF analysis and (2) lateral lithological transition inside the edifice inferred from SP/elevation gradients. The application of these methods on Misti volcano in southern Peru displays a very good correlation. The three main boundaries evidenced by hierarchical cluster analysis on the contour lines coincide with the two main boundaries characterised by SP signal and with a secondary SP signature related with a summit caldera. In order to explain these results showing a very good correlation between morphologic and lithologic changes as function of elevation, caldera boundaries have been suggested. The latter would be located at an average elevation of (1) 4350–4400 m, (2) 4950–5000 m, and (3) 5500– 5550 m. For the lowest boundary in elevation, the coincidence with the lateral extension of the hydrothermal system inferred from SP measurements suggests that caldera walls act as a barrier for lateral extension of hydrothermal systems. In the summit area, the highest boundary has been related with the summit caldera, inferred by a secondary SP minimum and geological evidence. | en |
dc.description.sponsorship | - Institut de Recherche pour le Développement (IRD) - Instituto Geofisico del Peru´ (IGP). | en |
dc.format.extent | 539 bytes | en |
dc.format.extent | 756700 bytes | en |
dc.format.mimetype | text/html | en |
dc.format.mimetype | application/pdf | en |
dc.language.iso | English | en |
dc.publisher.name | Elsevier | en |
dc.relation.ispartof | Journal of Volcanology and Geothermal Research | en |
dc.relation.ispartofseries | 141(2005) | en |
dc.subject | caldera | en |
dc.subject | elliptic Fourier functions | en |
dc.subject | geomorphology | en |
dc.subject | self-potential | en |
dc.subject | Misti volcano | en |
dc.subject | Peru | en |
dc.title | The buried caldera of Misti volcano, Peru, revealed by combining a self-potential survey with elliptic Fourier function analysis of topography | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 283– 297 | en |
dc.identifier.URL | http://www.sciencedirect.com/ | en |
dc.subject.INGV | 03. Hydrosphere::03.02. Hydrology::03.02.02. Hydrological processes: interaction, transport, dynamics | en |
dc.subject.INGV | 03. Hydrosphere::03.02. Hydrology::03.02.03. Groundwater processes | en |
dc.subject.INGV | 03. Hydrosphere::03.02. Hydrology::03.02.04. Measurements and monitoring | en |
dc.subject.INGV | 03. Hydrosphere::03.04. Chemical and biological::03.04.05. Gases | en |
dc.subject.INGV | 03. Hydrosphere::03.04. Chemical and biological::03.04.06. Hydrothermal systems | en |
dc.subject.INGV | 04. Solid Earth::04.01. Earth Interior::04.01.02. Geological and geophysical evidences of deep processes | en |
dc.subject.INGV | 04. Solid Earth::04.02. Exploration geophysics::04.02.04. Magnetic and electrical methods | en |
dc.subject.INGV | 04. Solid Earth::04.04. Geology::04.04.03. Geomorphology | en |
dc.subject.INGV | 04. Solid Earth::04.04. Geology::04.04.09. Structural geology | en |
dc.subject.INGV | 04. Solid Earth::04.04. Geology::04.04.11. Instruments and techniques | en |
dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.05. Volcanic rocks | en |
dc.subject.INGV | 05. General::05.02. Data dissemination::05.02.04. Hydrogeological data | en |
dc.subject.INGV | 05. General::05.05. Mathematical geophysics::05.05.99. General or miscellaneous | en |
dc.subject.INGV | 05. General::05.08. Risk::05.08.99. General or miscellaneous | en |
dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.08. Volcanic risk | en |
dc.identifier.doi | 10.1016/j.jvolgeores.2004.11.005 | en |
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dc.description.fulltext | partially_open | en |
dc.contributor.author | Tort, A. | en |
dc.contributor.author | Finizola, A. | en |
dc.contributor.department | Laboratoire Magmas et Volcans, Universite´ Blaise Pascal et CNRS, OPGC, IRD, 5 rue Kessler, 63038 Clermont-Ferrand, France | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, 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 | Laboratoire Magmas et Volcans, Universite´ Blaise Pascal et CNRS, OPGC, IRD, 5 rue Kessler, 63038 Clermont-Ferrand, France | - |
crisitem.author.orcid | 0000-0002-5083-7349 | - |
crisitem.classification.parent | 03. Hydrosphere | - |
crisitem.classification.parent | 03. Hydrosphere | - |
crisitem.classification.parent | 03. Hydrosphere | - |
crisitem.classification.parent | 03. Hydrosphere | - |
crisitem.classification.parent | 03. Hydrosphere | - |
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 | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 05. General | - |
crisitem.classification.parent | 05. General | - |
crisitem.classification.parent | 05. General | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
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