Search Results - "POLACCI, M"

Explosivity of basaltic lava fountains is controlled by magma rheology, ascent rate and outgassing by La Spina, G., Arzilli, F., Llewellin, E.W., Burton, M.R., Clarke, A.B., de' Michieli Vitturi, M., Polacci, M., Hartley, M.E., Di Genova, D., Mader, H.M.

“…The dichotomy between explosive volcanic eruptions, which produce pyroclasts, and effusive eruptions, which produce lava, is defined by the presence or absence…”
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An introduction to the application of X-ray microtomography to the three-dimensional study of igneous rocks by Baker, D.R., Mancini, L., Polacci, M., Higgins, M.D., Gualda, G.A.R., Hill, R.J., Rivers, M.L.

“…Imaging rocks in three-dimensions through X-ray microtomography enables routine visualization of structures in samples, which can be spatially resolved down to…”
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Crystallisation in basaltic magmas revealed via in situ 4D synchrotron X-ray microtomography by Polacci, M., Arzilli, F., La Spina, G., Le Gall, N., Cai, B., Hartley, M. E., Di Genova, D., Vo, N. T., Nonni, S., Atwood, R. C., Llewellin, E. W., Lee, P. D., Burton, M. R.

“…Magma crystallisation is a fundamental process driving eruptions and controlling the style of volcanic activity. Crystal nucleation delay, heterogeneous and…”
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The role of gas percolation in quiescent degassing of persistently active basaltic volcanoes by Burton, M.R., Mader, H.M., Polacci, M.

“…Using constraints from literature data on the petrology and texture of erupted material from Stromboli and geochemical measurements of gas emissions together…”
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Texture analysis of volcanic rock samples: Quantitative study of crystals and vesicles shape preferred orientation from X-ray microtomography data by Voltolini, M., Zandomeneghi, D., Mancini, L., Polacci, M.

“…In the texture analysis of volcanic rocks, the preferred orientation of the constituents can provide useful information for the interpretation of the processes…”
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Textural and geophysical characterization of explosive basaltic activity at Villarrica volcano by Gurioli, L., Harris, A. J. L., Houghton, B. F., Polacci, M., Ripepe, M.

“…Villarrica volcano (Chile) is one of the most active volcanoes in South America. Its activity is currently characterized by continuous degassing from a summit…”
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Conduit convection driving persistent degassing at basaltic volcanoes by Beckett, F.M., Burton, M., Mader, H.M., Phillips, J.C., Polacci, M., Rust, A.C., Witham, F.

“…The persistent release of gas at basaltic volcanoes where there is a low magma eruption rate can be driven by an exchange flow of magma in the conduit, in…”
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Characterizing high energy explosive eruptions at Stromboli volcano using multidisciplinary data: An example from the 9 January 2005 explosion by Andronico, D., Corsaro, R.A., Cristaldi, A., Polacci, M.

“…Stromboli is well known for its persistent, normal explosive activity, consisting of intermittent, mild to moderate, Strombolian explosions that typically…”
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Determining the Effect of Varying Magmatic Volatile Content on Lunar Magma Ascent Dynamics by Lo, M., La Spina, G., Joy, K. H., Polacci, M., Burton, M.

“…The Moon is not volcanically active at present, therefore, we rely on data from lunar samples, remote sensing, and numerical modeling to understand past lunar…”
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MeMoVolc report on classification and dynamics of volcanic explosive eruptions by Bonadonna, C., Cioni, R., Costa, A., Druitt, T., Phillips, J., Pioli, L., Andronico, D., Harris, A., Scollo, S., Bachmann, O., Bagheri, G., Biass, S., Brogi, F., Cashman, K., Dominguez, L., Dürig, T., Galland, O., Giordano, G., Gudmundsson, M., Hort, M., Höskuldsson, A., Houghton, B., Komorowski, J.C., Küppers, U., Lacanna, G., Le Pennec, J.L., Macedonio, G., Manga, M., Manzella, I., Vitturi, M. de’ Michieli, Neri, A., Pistolesi, M., Polacci, M., Ripepe, M., Rossi, E., Scheu, B., Sulpizio, R., Tripoli, B., Valade, S., Valentine, G., Vidal, C., Wallenstein, N.

“…Classifications of volcanic eruptions were first introduced in the early twentieth century mostly based on qualitative observations of eruptive activity, and…”
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Permeability measurements of Campi Flegrei pyroclastic products: An example from the Campanian Ignimbrite and Monte Nuovo eruptions by Polacci, M., Bouvet de Maisonneuve, C., Giordano, D., Piochi, M., Mancini, L., Degruyter, W., Bachmann, O.

“…In order to understand outgassing during volcanic eruptions, we performed permeability measurements on trachy-phonolitic pyroclastic products from the…”
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Heterogeneous vesiculation of 2011 El Hierro xeno-pumice revealed by X-ray computed microtomography by Berg, S. E., Troll, V. R., Deegan, F. M., Burchardt, S., Krumbholz, M., Mancini, L., Polacci, M., Carracedo, J. C., Soler, V., Arzilli, F., Brun, F.

“…During the first week of the 2011 El Hierro submarine eruption, abundant light-coloured pumiceous, high-silica volcanic bombs coated in dark basanite were…”
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Thermo-rheological magma control on the impact of highly fluid lava flows at Mt. Nyiragongo by Giordano, D., Polacci, M., Longo, A., Papale, P., Dingwell, D. B., Boschi, E., Kasereka, M.

“…In January 2002 Mount Nyiragongo erupted foiditic lavas that covered the Southern volcano flank devastating vast urban areas. Lava flows originated from vents…”
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Toward continuous quantification of lava extrusion rate: Results from the multidisciplinary analysis of the 2 January 2010 eruption of Piton de la Fournaise volcano, La Réunion by Hibert, C., Mangeney, A., Polacci, M., Muro, A. Di, Vergniolle, S., Ferrazzini, V., Peltier, A., Taisne, B., Burton, M., Dewez, T., Grandjean, G., Dupont, A., Staudacher, T., Brenguier, F., Kowalski, P., Boissier, P., Catherine, P., Lauret, F.

“…The dynamics of the 2–12 January 2010 effusive eruption at Piton de la Fournaise volcano were examined through seismic and infrasound records, time‐lapse…”
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Role of conduit shear on ascent of the crystal-rich magma feeding the 800-year-B.P. plinian eruption of Quilotoa volcano (Ecuador) by ROSI, M, LANDI, P, POLACCI, M, DI MURO, A, ZANDOMENEGHI, D

“…We have characterized pumice products belonging to the climactic phase of the 800-year-b.p. Quilotoa eruption. Bulk rock compositions, petrography, mineral,…”
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Rheological control on the dynamics of explosive activity in the 2000 summit eruption of Mt. Etna by Giordano, D, Polacci, M, Papale, P, Caricchi, L

“…In the period from January to June 2000 Mt. Etna exhibited an exceptional explosive activity characterized by a succession of 64 Strombolian and…”
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Constraining the dynamics of volcanic eruptions by characterization of pumice textures by M. Polacci

“…We have characterized the textures of pumice clasts from Phlegraean Fields to gain insights into the conduit flow-dynamics of alkaline explosive eruptions…”
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Can vesicle size distributions assess eruption intensity during volcanic activity? by LaRue, A, Baker, D. R, Polacci, M, Allard, P, Sodini, N

“…We studied three-dimensional (3-D) vesicle size distributions by X-ray microtomography in scoria collected during the relatively quiescent Phase II of the…”
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Floating stones off El Hierro, Canary Islands: xenoliths of pre-island sedimentary origin in the early products of the October 2011 eruption by Troll, V. R, Klügel, A, Longpré, M.-A, Burchardt, S, Deegan, F. M, Carracedo, J. C, Wiesmaier, S, Kueppers, U, Dahren, B, Blythe, L. S, Hansteen, T. H, Freda, C, Budd, D. A, Jolis, E. M, Jonsson, E, Meade, F. C, Harris, C, Berg, S. E, Mancini, L, Polacci, M, Pedroza, K

“…A submarine eruption started off the south coast of El Hierro, Canary Islands, on 10 October 2011 and continues at the time of this writing (February 2012). In…”
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Role of carbon dioxide in the dynamics of magma ascent in explosive eruptions by PAPALE, P, POLACCI, M

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