Search Results - "Alessandro Vona"

Effect of iron and nanolites on Raman spectra of volcanic glasses: A reassessment of existing strategies to estimate the water content by Di Genova, Danilo, Sicola, Stefania, Romano, Claudia, Vona, Alessandro, Fanara, Sara, Spina, Laura

“…The effect of iron content and iron nanolites on Raman spectra of hydrous geologically-relevant glasses is presented. Current procedures to estimate the water…”
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Meso- to nano-scale evidence of fluid-assisted co-seismic slip along the normal Mt. Morrone Fault, Italy: Implications for earthquake hydrogeochemical precursors by Coppola, Martina, Correale, Alessandra, Barberio, Marino Domenico, Billi, Andrea, Cavallo, Andrea, Fondriest, Michele, Nazzari, Manuela, Paonita, Antonio, Romano, Claudia, Stagno, Vincenzo, Viti, Cecilia, Vona, Alessandro

“…•Searching for fossil coseismic deformations.•Searching for fossil precursors of earthquakes.•Vanadium as potential seismic precursors. Fluids play an…”
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The complex rheology of megacryst-rich magmas: The case of the mugearitic “cicirara” lavas of Mt. Etna volcano by Vona, Alessandro, Di Piazza, Andrea, Nicotra, Eugenio, Romano, Claudia, Viccaro, Marco, Giordano, Guido

“…Multiphase magma rheological properties play a fundamental role on lava flow transport, emplacement and morphology. To date, however, the three-phase…”
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A comprehensive database of crystal-bearing magmas for the calibration of a rheological model by Frontoni, Alessandro, Costa, Antonio, Vona, Alessandro, Romano, Claudia

“…In this work, we present a comprehensive rheological database including most of the existing data relevant for crystal-bearing magmas collected from the…”
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The Taverna San Felice Dike (NE of Roccamonfina Volcano): Unraveling Magmatic Intrusion Processes and Volcano‐Tectonics in the Tyrrhenian Margin of the Southern Apennines by Natale, Jacopo, Vitale, Stefano, Giordano, Guido, Fedele, Lorenzo, Lucci, Federico, Vona, Alessandro, Prinzi, Ernesto Paolo, Tramparulo, Francesco D’Assisi, Isaia, Roberto, Ciarcia, Sabatino

“…The Roccamonfina volcano is located within the Garigliano Graben (southern Apennines, Italy) and has been active throughout the Middle‐Late Pleistocene. Along…”
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Preservation of neurons in an AD 79 vitrified human brain by Petrone, Pierpaolo, Giordano, Guido, Vezzoli, Elena, Pensa, Alessandra, Castaldo, Giuseppe, Graziano, Vincenzo, Sirano, Francesco, Capasso, Emanuele, Quaremba, Giuseppe, Vona, Alessandro, Miano, Maria Giuseppina, Savino, Sergio, Niola, Massimo, de Castro, Fernando

“…Detecting the ultrastructure of brain tissue in human archaeological remains is a rare event that can offer unique insights into the structure of the ancient…”
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A chemical threshold controls nanocrystallization and degassing behaviour in basalt magmas by Scarani, Alex, Zandonà, Alessio, Di Fiore, Fabrizio, Valdivia, Pedro, Putra, Rizaldi, Miyajima, Nobuyoshi, Bornhöft, Hansjörg, Vona, Alessandro, Deubener, Joachim, Romano, Claudia, Di Genova, Danilo

“…An increasing number of studies are being presented demonstrating that volcanic glasses can be heterogeneous at the nanoscale. These nano-heterogeneities can…”
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Calibrating Carbonization Temperatures of Wood Fragments Embedded within Pyroclastic Density Currents through Raman Spectroscopy by Andrea Schito, Alessandra Pensa, Claudia Romano, Sveva Corrado, Alessandro Vona, Matteo Trolese, Daniele Morgavi, Guido Giordano

“…The study of the structural order of charcoals embedded in pyroclastic density currents provides information on their emplacement temperature during volcanic…”
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Magma titanium and iron contents dictate crystallization timescales and rheological behaviour in basaltic volcanic systems by Di Fiore, Fabrizio, Vona, Alessandro, Di Genova, Danilo, Pontesilli, Alessio, Calabrò, Laura, Mollo, Silvio, Taddeucci, Jacopo, Romano, Claudia, Scarlato, Piergiorgio

“…Magma ascending through Earth’s crust undergoes complex chemical and physical changes that may induce crystallization, a process that contributes to lead the…”
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A proxy for magmatic foams: FOAMGLAS®, a closed-cell glass insulation by Ryan, Amy G., Kolzenburg, Stephan, Vona, Alessandro, Heap, Michael J., Russell, James K., Badger, Steven

“…FOAMGLAS® is a closed-cell glass insulation that has a high porosity, is impermeable, and can be heated above its glass transition temperature (Tg) without…”
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Linking magma texture, rheology and eruptive style during the 472 AD Pollena Subplinian eruption (Somma-Vesuvius) by Vona, Alessandro, Romano, Claudia, Giordano, Guido, Sulpizio, Roberto

“…The study of medium-large magnitude and intermediate-high intensity eruptions (VEI = 4/5; Column Height 15–20 km) fed by poorly evolved magmas is one of the…”
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Quantifying the influence of cooling and shear rate on the disequilibrium rheology of a trachybasaltic melt from Mt. Etna by Di Fiore, Fabrizio, Vona, Alessandro, Costa, Antonio, Mollo, Silvio, Romano, Claudia

“…•High-T deformation experiments are performed on a trachybasaltic melt.•Effects of shear and cooling rate on the rheology are systematically investigated.•Two…”
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Experimental insights on the shear-induced crystallization of a phonotephrite magma by Di Fiore, Fabrizio, Vona, Alessandro, Mollo, Silvio, Nazzari, Manuela, Giordano, Guido, Romano, Claudia

“…In active volcanic environments magmas that ascend within the conduit and erupt at the surface as lava flows experience physico-chemical perturbations related…”
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Kinetic partitioning of major and trace cations between clinopyroxene and phonotephritic melt under convective stirring conditions: New insights into clinopyroxene sector zoning and concentric zoning by Di Fiore, Fabrizio, Mollo, Silvio, Vona, Alessandro, MacDonald, Alice, Ubide, Teresa, Nazzari, Manuela, Romano, Claudia, Scarlato, Piergiorgio

“…Within subvolcanic plumbing systems, along volcanic conduits and post-eruptive emplacement, mineral textures and compositions are governed by complex kinetic…”
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Handheld-Mode Interface for the OLPC XO Laptops by Biader Ceipidor, Ugo, Medaglia, Carlo Maria, Vona, Alessandro

“…The article gives an account of the “Handheld-Mode Interface for the OLPC XO Laptops” research work within OpenUsability project. The introduction of the…”
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Thermodynamics and kinetics of cation partitioning between plagioclase and trachybasaltic melt in static and dynamic systems: A reassessment of the lattice strain and electrostatic energies of substitution by Mollo, Silvio, Di Fiore, Fabrizio, MacDonald, Alice, Ubide, Teresa, Pontesilli, Alessio, Giuliani, Gabriele, Vona, Alessandro, Romano, Claudia, Scarlato, Piergiorgio

“…Most of the solidification history of magmas beneath active volcanoes takes place in chemically and physically perturbed plumbing systems where the growth of…”
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Determination of cooling rates of glasses over four orders of magnitude by Scarani, Alex, Vona, Alessandro, Di Genova, Danilo, Al-Mukadam, Raschid, Romano, Claudia, Deubener, Joachim

“…Volcanic materials can experience up to eleven orders of magnitude of cooling rate ( q c ) starting from 10 –5  K s −1 . The glassy component of volcanic…”
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Micro-Raman water calibration in ultrapotassic silicate glasses: Application to phono-tephrites and K-foidites of Colli Albani Volcanic District (Central Italy) by Bonechi, Barbara, Gaeta, Mario, Perinelli, Cristina, Moschini, Piergiorgio, Romano, Claudia, Vona, Alessandro

“…This study investigates the potential use of micro-Raman spectroscopy for the quantification of water in ultrapotassic silicate glasses. A calibration was…”
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The effect of pores (fluid-filled vs. drained) on magma rheology by Sicola, Stefania, Vona, Alessandro, Ryan, Amy G., Russell, James K., Romano, Claudia

“…The presence of pore space strongly affects the rheological behavior of magma and thus influences all volcanic processes (pre-, syn- and post- eruptive). The…”
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Kinetic partitioning of trace cations between zoned clinopyroxene and a variably cooled-decompressed alkali basalt: Thermodynamic considerations on lattice strain and electrostatic energies of substitution by Mollo, Silvio, Moschini, Piergiorgio, Ubide, Teresa, MacDonald, Alice, Vetere, Francesco, Nazzari, Manuela, Misiti, Valeria, Miyajima, Nobuyoshi, Melai, Caterina, Di Genova, Danilo, Vona, Alessandro, Di Fiore, Fabrizio, Romano, Claudia

“…We present kinetic partitioning data for trace cations measured in zoned clinopyroxene crystals obtained from a variably cooled and decompressed olivine basalt…”
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