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  • 1
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    Monitoring Actives Volcanoes by Using of Envisat and Ers Data: First Results of the Eurorisk-Preview Project (2009)
    ESA Proc.
    Details
    Publication Date: 2020-02-24
    Description: In the framework of the Eurorisk-Preview project, funded by the European Union, a task is dedicated to the assessment, prevention and management of volcanic risk. We are developing a multidisciplinary approach, integrating the geophysical prospecting at local scale and large scale remote sensing data. To achieve this task, two volcanic test sites have been identified: Mt. Etna, in Sicily (Italy), and Tenerife, in Canary Islands (Spain). We investigate the surface deformation and the volcanic emission in the atmosphere by using SAR series and multispectral data, requested in the ESA Category 1 (n. 3560). For Mt. Etna data from historical to recent eruptions (1992 – 2006) has been analysed while for Tenerife archived SAR data from 1992 to 2005 has been analysed, individuating anomaly ground deformations in Pico de Teide and surrounding areas as suggested by GPS campaigns.
    Description: Published
    Description: Montreux
    Description: 1.5. TTC - Sorveglianza dell'attività eruttiva dei vulcani
    Description: 1.10. TTC - Telerilevamento
    Description: 4.3. TTC - Scenari di pericolosità vulcanica
    Description: open
    Keywords: Surface deformation ; Mt. Etna ; Tenerife ; SAR ; 04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Conference paper
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  • 2
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    Mt. Etna Test Cases for MED-SUV project. (2015)
    MISCELLANEA INGV
    Details
    Publication Date: 2017-04-04
    Description: In the framework of MED-SUV, WP5 is in charge of studying Mt. Etna's volcanic activity. We defmed periods and phenomena of the volcano activity to be used by the WP5 partners as Test Cases in the time window 2005-2011 i.e. that of the data available in the MED-SUV database. Overall, characterisation of eruptive activity and/or periods of quiescence will improve our knowledge on the geophysical and geochemical processes taking place inside Mt. Etna's volcanic system. These processes to be characterized include: • magma formation and evolution, • conditions of storage and transfer of magma in reservoirs at different levels within the crust; • physical and chemical interaction of magma with surrounding rocks and fracture/fault systems and their effects at the surface; • opening of eruptive vents/fissures as well as eruptive processes (including the formation and evolution of lava fields, volcanic plumes, pyroclastic fallout, etc.). The joint effort around the Test Cases will help the WP5 team addressing key questions such as: • what has determined changes of Mt. Etna eruptive style (mainly effusive vs. short-lasting, frequent paroxysmal events) in the last decades? • how is the shallow plumbing system (-1-4 km from the summit) structured? What are the processes occurring in this portion of the volcano feeding system and the key parameters controlling these processes? How does magma behave at shallow depths? • what is the suitability of cross-correlated parameters/models for shedding light on the relationship between shallow (〈5-6 km) earthquakes of the eastern flank ofMt. Etna and volcanic activity (if any)? For such questions, analysing carefully the periods of "quiescence" that precede eruptions is not less important than analyzing the eruptions themselves.
    Description: Published
    Description: Nicolosi (Catania), Italy
    Description: 1V. Storia e struttura dei sistemi vulcanici
    Description: open
    Keywords: Etna ; volcanic activity ; test cases ; 04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Poster session
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  • 3
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    High-speed imaging, acoustic features, and aeroacoustic computations of jet noise from Strombolian (and Vulcanian) explosions (2015)
    American Geophysical Union
    Details
    Publication Date: 2017-04-04
    Description: High-speed imaging of explosive eruptions at Stromboli (Italy), Fuego (Guatemala), and Yasur (Vanuatu) volcanoes allowed visualization of pressure waves from seconds-long explosions. From the explosion jets, waves radiate with variable geometry, timing, and apparent direction and velocity. Both the explosion jets and their wave fields are replicated well by numerical simulations of supersonic jets impulsively released from a pressurized vessel. The scaled acoustic signal from one explosion at Stromboli displays a frequency pattern with an excellent match to those from the simulated jets. We conclude that both the observed waves and the audible sound from the explosions are jet noise, i.e., the typical acoustic field radiating from high-velocity jets. Volcanic jet noise was previously quantified only in the infrasonic emissions from large, sub-Plinian to Plinian eruptions. Our combined approach allows us to define the spatial and temporal evolution of audible jet noise from supersonic jets in small-scale volcanic eruptions.
    Description: INGV-DPC “V2” and “Paroxysm,” FIRB-MIUR “Research and Development of New Technologies for Protection and Defense of Territory from Natural Risks,” and FP7-PEOPLE-IEF-2008–235328 “NEMOH” ITN projects
    Description: Published
    Description: 3096–3102
    Description: 3V. Dinamiche e scenari eruttivi
    Description: JCR Journal
    Description: restricted
    Keywords: jet noise ; volcano acoustics ; Stromboli ; Yasur ; Fuego ; strombolian eruption ; 04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous ; 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring ; 04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniques ; 05. General::05.02. Data dissemination::05.02.03. Volcanic eruptions
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 4
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    Chiral properties of hematite α-Fe_{2}O_{3} inferred from resonant Bragg diffraction using circularly polarized x rays (2013)
    American Physical Society (APS)
    Details
    Publication Date: 2013-09-27
    Description: Author(s): A. Rodríguez-Fernández, J. A. Blanco, S. W. Lovesey, V. Scagnoli, U. Staub, H. C. Walker, D. K. Shukla, and J. Strempfer Chiral properties of the two phases—collinear motif (below Morin transition temperature, T M ≈250 K) and canted motif (above T M )—of magnetically ordered hematite ( α -Fe 2 O 3 ) have been identified in single-crystal resonant x-ray Bragg diffraction using circular polarized incident x rays tuned near the ir... [Phys. Rev. B 88, 094437] Published Thu Sep 26, 2013
    Keywords: Magnetism
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 5
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    First-order nature of the ferromagnetism in CeIn_{2} investigated using muon spin rotation and by systematic substitution of La for Ce (2011)
    American Physical Society (APS)
    Details
    Publication Date: 2011-07-06
    Description: Author(s): D. P. Rojas, J. I. Espeso, J. Rodríguez Fernández, J. C. GómezSal, C. Rusu, D. Andreica, R. Dudric, and A. Amato The nature of the first-order ferromagnetic transition in binary CeIn 2 alloy is investigated by muon spin rotation ( μ SR) measurements and chemical substitution of Ce by La in the La 1- x Ce x In 2 ( 0.9⩽ x ⩽1.0 ) series of alloys. Below 22 K, the analysis of μ SR spectra shows two spin precession frequencies a... [Phys. Rev. B 84, 024403] Published Tue Jul 05, 2011
    Keywords: Magnetism
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 6
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    Critical parameters of the three-dimensional Ising spin glass (2013)
    American Physical Society (APS)
    Details
    Publication Date: 2013-12-21
    Description: Author(s): M. Baity-Jesi, R. A. Baños, A. Cruz, L. A. Fernandez, J. M. Gil-Narvion, A. Gordillo-Guerrero, D. Iñiguez, A. Maiorano, F. Mantovani, E. Marinari, V. Martin-Mayor, J. Monforte-Garcia, A. Muñoz Sudupe, D. Navarro, G. Parisi, S. Perez-Gaviro, M. Pivanti, F. Ricci-Tersenghi, J. J. Ruiz-Lorenzo, S. F. Schifano, B. Seoane, A. Tarancon, R. Tripiccione, and D. Yllanes We report a high-precision finite-size scaling study of the critical behavior of the three-dimensional Ising Edwards-Anderson model (the Ising spin glass). We have thermalized lattices up to L=40 using the Janus dedicated computer. Our analysis takes into account leading-order corrections to scaling... [Phys. Rev. B 88, 224416] Published Fri Dec 20, 2013
    Keywords: Magnetism
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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