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Academic literature on the topic 'Explosive volcanic eruptions Victoria'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Explosive volcanic eruptions Victoria"

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Narcisi, Biancamaria, Marco Proposito, and Massimo Frezzotti. "Ice record of a 13th century explosive volcanic eruption in northern Victoria Land, East Antarctica." Antarctic Science 13, no. 2 (June 2001): 174–81. http://dx.doi.org/10.1017/s0954102001000268.

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A volcanic event, represented by both coarse ash and a prominent sulphate peak, has been detected at a depth of 85.82 m in a 90 m ice core drilled at Talos Dome, northern Victoria Land. Accurate dating of the core, based on counting annual sulphate and nitrate fluctuations and on comparison with records of major known volcanic eruptions, indicates that the event occurred in 1254 ± 2 AD. The source volcano is most likely to be located within the Ross Sea region. In particular, the glass shards have a trachytic composition similar to rocks from The Pleiades and Mount Rittmann (Melbourne volcanic province), about 200 km from Talos Dome. Sulphate concentration is comparable with that of violent extra-Antarctic explosive events recorded in the same core, but atmospheric perturbation was short-lived and localized, suggesting a negligible impact on regional climate. It is suggested that this eruption may represent the most important volcanic explosion in the Melbourne province during the last eight centuries; thus this event may also represent a valuable chrono-stratigraphical marker on the East Antarctic plateau and in adjoining areas.
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Nardin, Raffaello, Alessandra Amore, Silvia Becagli, Laura Caiazzo, Massimo Frezzotti, Mirko Severi, Barbara Stenni, and Rita Traversi. "Volcanic Fluxes Over the Last Millennium as Recorded in the Gv7 Ice Core (Northern Victoria Land, Antarctica)." Geosciences 10, no. 1 (January 20, 2020): 38. http://dx.doi.org/10.3390/geosciences10010038.

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Major explosive volcanic eruptions may significantly alter the global atmosphere for about 2–3 years. During that period, volcanic products (mainly H2SO4) with high residence time, stored in the stratosphere or, for shorter times, in the troposphere are gradually deposited onto polar ice caps. Antarctic snow may thus record acidic signals providing a history of past volcanic events. The high resolution sulphate concentration profile along a 197 m long ice core drilled at GV7 (Northern Victoria land) was obtained by Ion Chromatography on around 3500 discrete samples. The relatively high accumulation rate (241 ± 13 mm we yr −1) and the 5-cm sampling resolution allowed a preliminary counted age scale. The obtained stratigraphy covers roughly the last millennium and 24 major volcanic eruptions were identified, dated, and tentatively ascribed to a source volcano. The deposition flux of volcanic sulphate was calculated for each signature and the results were compared with data from other Antarctic ice cores at regional and continental scale. Our results show that the regional variability is of the same order of magnitude as the continental one.
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Lane, Christine S., Catherine M. Martin-Jones, and Thomas C. Johnson. "A cryptotephra record from the Lake Victoria sediment core record of Holocene palaeoenvironmental change." Holocene 28, no. 12 (September 21, 2018): 1909–17. http://dx.doi.org/10.1177/0959683618798163.

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The sediment record from Lake Victoria is an important archive of regional environmental and climatic conditions, reaching back more than 15,000 cal. years before present (15 ka BP). As the largest lake by area in East Africa, its evolution is key to understanding regional palaeohydrological change during the late Pleistocene and Holocene, including controls on the Nile River flow. As well as important palaeoenvironmental proxies, the lake contains a unique record of explosive volcanism from the central Kenyan Rift, in the form of fine-grained volcanic ash (tephra) layers, interpreted as airfall deposits. In the V95-1P core, collected from the central northern basin of the lake, tephra layers vary in concentration from 10s to 10s of 1000s of glass shards per gram of sediment. None of the tephra are visible to the naked eye, and have only been revealed through careful laboratory processing. Compositional analyses of tephra glass shards has allowed the tephra layers to be correlated to previously unrecognized eruptions of Eburru volcano around 1.2 and 3.8 ka, and Olkaria volcano, prior to 15 ka. These volcanoes lie ~300 km east of the core site in the Kenyan Rift. Our results highlight the potential for developing cryptotephra analysis as a key tool in East African palaeolimnological research. Tephra layers offer opportunities for precise correlation of palaeoenvironmental sequences, as well as windows into the eruption frequency of regional volcanoes and the dispersal of volcanic ash.
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Stenni, B., R. Caprioli, L. Cimino, C. Cremisini, O. Flora, R. Gragnani, A. Longinelli, V. Maggi, and S. Torcini. "200 years of isotope and chemical records in a firn core from Hercules Névé, northern Victoria Land, Antarctica." Annals of Glaciology 29 (1999): 106–12. http://dx.doi.org/10.3189/172756499781821175.

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AbstractA 42.2 m firn core was collected at the Hercules Névé plateau (100 km inland and 2960 m a.s.L), northern Victoria Land, during the 1994-95 Italian Antarctic Expedition. Chemical (Cl–, NO3–, SO42–’; δ18O δ18O δ18O; m-2a-1) and isotope (5180) analyses were performed to evaluate the snow-accumulation rate at this site. Tritium measurements were performed in the upper part of the core to narrow down the dating of the core.High nssSO42- concentrations seem to be related to some explosive volcanic eruptions, such as Tambora (AD 1815) and the preceding event called "Unknown" (AD 1809), Coseguina (AD 1835), Makjan (AD 1861), Krakatoa (AD 1883) and Tarawera (AD 1886).A comparison between the seasonal variations observed in the isotope and chemical profiles was carried out in order to reduce the dating uncertainty, using the tritium and the volcanic markers as time constraints. A deposition period of 222 years was determined.The 3 year smoothed «5180 profile shows more negative values from the bottom of the core (dated AD 1770) throughout the 19th century, suggesting "cooler" conditions, in agreement with other East Antarctic ice-core records! Subsequently, a general increase in δ180-values is observed.The calculated average snow-accumulation rates between the above-mentioned time markers are 111-129 kg m-2a-1.
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Ismail, Rafika, David Phillips, and William D. Birch. "40Ar/39Ar dating of alkali feldspar megacrysts from selected young volcanoes of the Newer Volcanic Province, Victoria." Proceedings of the Royal Society of Victoria 125, no. 2 (2013): 59. http://dx.doi.org/10.1071/rs13019.

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The Newer Volcanic Province (NVP) in Victoria, with extension into south-eastern South Australia, represents the youngest chapter of Cenozoic volcanism in south-eastern Australia. However, most ages have been determined by the potassium–argon (K–Ar) method, and the age data are not comprehensive. In addition, few ages exist for the array of scoria cone volcanoes in the NVP. Seven alkali feldspar samples, mostly anorthoclase megacrysts, from volcanic centres in the NVP were used for 40Ar/39Ar dating in the present study. In geochronological order, with ages quoting 95% confidence limits, locations are Mount Franklin near Daylesford (0.110 ± 0.014 Ma), Red Rock near Alvie (0.116 ± 0.048 Ma), Lake Bullenmerri at Camperdown (0.116 ± 0.019 Ma), Ridge Road Quarry near Daylesford (2.01 ± 0.11 Ma) and Mount Kororoit near Diggers Rest (3.74 ± 0.26 Ma). Two samples from The Anakies, near Bacchus Marsh, produced discordant results suggesting a maximum age of ca. 1.9 Ma. The analyses and reported ages in the present study not only provide new geochronological data for the province, but also elucidate the difficulties in dating very young basalts using the 40Ar/39Ar dating method. These results are consistent with the erosion levels of the scoria volcanoes sampled, and indicate a major episode of explosive volcanic activity at ca. 100 ka. In contrast, the more eroded Mount Kororoit is considered to be ca. 3.7 Ma in age. The age of The Anakies is more equivocal owing to the indicated presence of excess argon and a maximum age of ca. 1.9 Ma is suggested for this locality. Given the latter results and lack of precision obtainable from the younger samples, the possibility remains that other samples contained extraneous argon and that the ages generated are thus maximum eruption ages. Analyses of additional samples from these and other localities will be required to further resolve this issue.
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Lynch, James S. "Mount Pinatubo—Explosive Volcanic Eruptions." Weather and Forecasting 6, no. 4 (December 1991): 576–80. http://dx.doi.org/10.1175/1520-0434(1991)006<0576:mpve>2.0.co;2.

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Mader, H. M. "PHYSICAL PROCESSES IN EXPLOSIVE VOLCANIC ERUPTIONS." Multiphase Science and Technology 11, no. 3 (1999): 147–95. http://dx.doi.org/10.1615/multscientechn.v11.i3.10.

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Dufek, Josef, Michael Manga, and Ameeta Patel. "Granular disruption during explosive volcanic eruptions." Nature Geoscience 5, no. 8 (July 22, 2012): 561–64. http://dx.doi.org/10.1038/ngeo1524.

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BUCKINGHAM, MICHAEL J., and MILTON A. GARCÉS. "AIRBORNE ACOUSTICS OF EXPLOSIVE VOLCANIC ERUPTIONS." Journal of Computational Acoustics 09, no. 03 (September 2001): 1215–25. http://dx.doi.org/10.1142/s0218396x01000802.

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A recently developed theoretical model of the airborne acoustic field from an explosive volcanic eruption of the Strombolian type is described in this article. The magma column is assumed to be a circular cylinder, which is open to the atmosphere at the top, and which opens into a large magma chamber below. The magma itself is treated as a fluid, and the surrounding bedrock is taken to be rigid. An explosive source near the base of the magma column excites the natural resonances of the conduit. These resonances result in displacement of the magma surface, which acts as a piston radiating sound into the atmosphere. The source is modeled in much the same way as an underwater explosion from a high-explosive chemical such as TNT, although in the case of the volcano the detonation mechanism is the ex-solution of magmatic gases under extremely high hydrostatic pressure. The new theory shows compelling agreement with airborne acoustic signatures that were recorded in July 1994 at a distance of 150 m from the western vent of Stromboli volcano, Italy. The theoretical and observed power spectra both display the following features: (1) four energetic peaks below 20 Hz, identified as the first four longitudinal resonances of the magma column; (2) a broad minimum around 30 Hz, interpreted as a source-depth effect, occurring because the source lay close to nulls in the fifth and sixth longitudinal resonances and thus failed to excite these modes; and (3) radial resonance peaks between 35 and 65 Hz. On the basis of the theory, an inversion of the acoustic data from Stromboli yields estimates of the depth (≈100 m) and radius (≈16 m) of the magma column as well as the depth (≈83 m), spectral shape and peak shock wave pressure (≈1 GPa) of the explosive source. Most of the parameters estimated from the acoustic inversion compare favorably with the known geometry and source characteristics of Stromboli.
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Woods, Andrew W. "The dynamics of explosive volcanic eruptions." Reviews of Geophysics 33, no. 4 (1995): 495. http://dx.doi.org/10.1029/95rg02096.

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Dissertations / Theses on the topic "Explosive volcanic eruptions Victoria"

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Bower, S. M. "Models of explosive volcanic eruptions." Thesis, University of Cambridge, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.596823.

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This thesis describes the investigation of fluid dynamic processes involved in maintained explosive volcanic eruptions. The thesis is divided into chapters relating to dynamical processes in a volcanic system: evolution and evacuation of a reservoir of molten rock, flow in a narrow conduit to the Earth's surface, and subsequent transport in the atmosphere. In chapter 2, we calculate the mass erupted, prior to caldera collapse, from a chamber as the pressure changes from a certain overpressure to a specified underpressure at which wall collapse occurs. The compressibility of the magma increases significantly as the pressure falls and the magma becomes saturated in volatiles. Magma saturation exerts a dominant control on the amount of magma erupted. We also examine the effects on mass erupted of the chamber shape, size and depth beneath the Earth's surface, the magma composition and the strength of country rock. Finally, we demonstrate applications of our results to various historical eruptions, including the eruption at Vesuvius in 79A.D. and the eruption at Mt St Helens in 1980. During maintained explosive volcanic eruptions, fragmented silicic magma and volatiles exit the vent with pressures typically in the range 10-100 atm and at the speed of sound of the mixture. In chapter 3, we review previous models of magma ascent up a conduit and identify some new scalings for the exit velocity as a function of the speed of sound of the mixture. In chapter 4, we combine models of evolution of the magma chamber with models of ascent of magma up the conduit to make estimates of the duration of the eruption and examine the rate of change in eruption rate with time under conditions of decreasing chamber pressure, changing magma volatile content and conduit widening due to erosion. Finally, we demonstrate an application of our results to the historical eruptions at Vesuvius in 79A.D. and at Mt St Helens in 1980. After decompression, the bulk of the material may ascend as a larger convecting eruption column or collapse to form a dense fountain which sheds ash flows around the vent. In chapter 5, we model the decompression of jets beyond the vent. We describe a jet freely decompressing into the atmosphere or into a crater, coupling our results with models of eruption column formation. We show that decompression through a crater may cause collapse at relatively small eruption rates, while it may promote formation of buoyant eruption columns at higher eruption rates. If a crater grows through erosion during an eruption, then typically a transition in eruption style may occur from an eruption column to column collapse.
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Herd, Richard Angus. "Degassing mechanisms during explosive volcanic eruptions." Thesis, Lancaster University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239117.

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Hellwig, Bridget M. "The viscosity of dacitic liquids measured at conditions relevant to explosive arc volcanism determing the influence of temperature, silicate composition, and dissolved volatile content /." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4597.

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Thesis (M.S.)--University of Missouri-Columbia, 2006.
The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (February 7, 2007) Includes bibliographical references.
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Calder, Eliza Shona. "Dynamics of small to intermediate volume pyroclastic flows." Thesis, University of Bristol, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297925.

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Telling, Jennifer Whitney. "An experimental evaluation of the role of water vapor and collisional energy on ash aggregation in explosive volcanic eruptions." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/43674.

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Eruption dynamics are sensitive to ash aggregation, and ash aggregates (e.g. accretionary lapilli) are commonly found in eruptive deposits, yet few experiments have been conducted on aggregation phenomena using natural materials. Experiments were developed to produce a probabilistic relationship for the efficiency of ash aggregation with respect to particle size, collision kinetic energy and atmospheric water vapor. The laboratory experiments were carried out in an enclosed tank designed to allow for the control of atmospheric water vapor. A synthetic ash proxy, ballotini, and ash from the 2006 eruption of Tungurahua, in Ecuador, were examined for their aggregation potential. Image data was recorded with a high speed camera and post-processed to determine the number of collisions, energy of collisions and probability of aggregation. Aggregation efficiency was dominantly controlled by collision kinetic energy and little to no dependence on atmospheric water vapor was seen in the range of relative humidity conditions tested, 20 to 80%. Equations governing the relationships between aggregation efficiency and collision kinetic energy and the related particle Stokes number, respectively, were determined for implementation into large scale numerical volcanic models.
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Bardot, Leon. "Explosive volcanism on Santorini : palaeomagnetic estimation of emplacement temperatures of pyroclastics." Thesis, University of Oxford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360162.

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Zhuo, Zhihong [Verfasser]. "The hydrological effects of explosive volcanic eruptions in the Asian monsoon region / Zhihong Zhuo." Berlin : Freie Universität Berlin, 2019. http://d-nb.info/1202041981/34.

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Rust, Alison C. "Viscosity, deformation and permeability of bubbly magma : applications to flow and degassing in volcanic conduits /." view abstract or download file of text, 2003. http://wwwlib.umi.com/cr/uoregon/fullcit?p3113026.

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Thesis (Ph. D.)--University of Oregon, 2003.
Typescript. Includes vita and abstract. Includes bibliographical references (leaves 190-205). Also available for download via the World Wide Web; free to University of Oregon users.
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Mitchell, Karl Leon. "The thermodynamics and fluid mechanics of near-vent processes in explosive volcanic eruptions on the Earth and Mars." Thesis, Lancaster University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403768.

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Kunrat, Syegi Lenarahmi. "Soputan Volcano, Indonesia: Petrological Systematics of Volatiles and Magmas and their Bearing on Explosive Eruptions of a Basalt Volcano." PDXScholar, 2017. https://pdxscholar.library.pdx.edu/open_access_etds/3828.

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Soputan volcano is one of the few basaltic volcanoes among 127 active volcanoes in Indonesia. It is part of the Sempu-Soputan volcanic complex located south of Tondano Caldera, North Sulawesi and commonly produces both explosive eruptions with VEI 2-3 and effusive lava dome and flow eruptions. Over the last two decades, Soputan had thirteen eruptions, the most recent in 2016. Most eruptions started explosively, followed by dome growth and in some cases pyroclastic flows. Our study focuses on understanding the magmatic system of Soputan and what processes are responsible for its highly explosive eruptions, which are typically uncommon for a basaltic magma composition. Our study includes tephra samples predating the 1911 eruptions, lava flow samples from the 2015 eruption, and ash from a 2015 fallout deposit. Our whole rock major and trace element composition are virtually identical to lava flow and select pyroclastic deposit compositions of Kushendratno et al. (2012) for the 1911-1912 and 1991-2007 eruptions. Bulk rocks contain 49 to 51 wt.% SiO2, whereas 2015 ash samples are slightly more silicic with 53 wt.% SiO2, consistent with segregation of groundmass from phenocrysts in the eruption cloud. Mantle normalized incompatible trace elements indicate strongly depleted HFSE (High Field Strength Elements) and REE (Rare Earth Elements) signatures but with spikes at Pb and Sr and mild enrichment of Rb and Ba. In comparison of data of this study with what was reported by Kushendratno et al. (2012), Fo68-79 olivine-hosted melt inclusions range from basaltic (48-52 wt.% SiO2) to basaltic andesite (54-55 wt.%) as compared to 54 - 65 wt.% SiO2 glass in Fo68-74 olivines. The compositional range of melt inclusions is consistent with 50% fractionation of multiple minerals including observed phenocrysts of olivine, plagioclase, pyroxene and oxides. Compositional trends with an inflection point likely reflect a change in the crystallizing assemblage, where early crystallization includes clinopyroxene and plagioclase, while later crystallization is dominated by plagioclase. New volatile concentration data from melt inclusions (S max. 0.35 wt.%, Cl max. 0.17%, H2O max. 5.2 wt.% from FTIR analyses) are higher than previously reported from younger samples (S max. ~0.07 wt.%, Cl max. 0.2%, H2O max. ~1 wt.%). H2O is relatively constant (~1-4 wt.%) for individual tephra samples (data by FTIR and water by difference method). Our inclusion data suggest that more volatile-rich magmas exist at depth and this is consistent with a model whereby recharge of deep, volatile-rich magmas into a more degassed and crystal-rich magma initiates a new, highly explosive eruption.
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Books on the topic "Explosive volcanic eruptions Victoria"

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1963-, Gilbert J. S., and Sparks, R. S. J. 1949-, eds. The physics of explosive volcanic eruptions. London: Geological Society, 1998.

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Armin, Freundt, and Rosi Mauro, eds. From magma to tephra: Modelling physical processes of explosive volcanic eruptions. Amsterdam: Elsevier, 2001.

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From magma to tephra: Modelling physical processes of explosive volcanic eruptions. Amsterdam: Elsevier, 1998.

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Freundt, A., and M. Rosi. From Magma to Tephra: Modelling Physical Processes of Explosive Volcanic Eruptions. Elsevier Science & Technology Books, 2001.

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James D. L. White (Editor), J. L. Smellie (Editor), and D. A. Clague (Editor), eds. Explosive Subaqueous Volcanism (Geophysical Monograph). American Geophysical Union, 2003.

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Lincei, Accademia nazionale dei, and British Council, eds. Large explosive eruptions: (the problems of eruption forecasting and warning--limits and possibilities) : international symposium sponsored by the Accademia nazionale dei Lincei and the British Council (Rome, 24-25 May 1993). Roma: Accademia nazionale dei Lincei, 1994.

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Woodward, Jamie, ed. The Physical Geography of the Mediterranean. Oxford University Press, 2009. http://dx.doi.org/10.1093/oso/9780199268030.001.0001.

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This volume explores the climates, landscapes, ecosystems and hazards that comprise the Mediterranean world. It traces the development of the Mediterranean landscape over very long timescales and examines modern processes and key environmental issues in a wide range of settings. The Mediterranean is the only region on Earth where three continents meet and this interaction has produced a very distinctive Physical Geography. This book examines the landscapes and processes at the margins of these continents and the distinctive marine environment between them. Catastrophic earthquakes, explosive volcanic eruptions and devastating storms and floods are intimately bound up within the history and mythology of the Mediterranean world. This is a key region for the study of natural hazards because it offers unrivalled access to long records of hazard occurrence and impact through documentary, archaeological and geological archives. The Mediterranean is also a biodiversity hotspot; it has been a meeting place for plants, animals and humans from three continents throughout much of its history. The Quaternary records of these interactions are more varied and better preserved than in any other part of the world. These records have provided important new insights into the tempo of climate, landscape and ecosystem change in the Mediterranean region and beyond. The region is unique because of the very early and widespread impact of humans in landscape and ecosystem change - and the richness of the archaeological and geological archives that chronicle this impact. This book examines this history and these interactions and places current environmental issues in long term context.
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Book chapters on the topic "Explosive volcanic eruptions Victoria"

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Lane, Stephen J., and Michael R. James. "Volcanic Eruptions, Explosive: Experimental Insights." In Extreme Environmental Events, 1082–103. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-7695-6_55.

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Lane, Stephen J., and Michael R. James. "Volcanic Eruptions, Explosive: Experimental Insights." In Encyclopedia of Complexity and Systems Science, 9784–831. New York, NY: Springer New York, 2009. http://dx.doi.org/10.1007/978-0-387-30440-3_579.

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Lane, Stephen J., and Michael R. James. "Volcanic Eruptions, Explosive: Experimental Insights." In Complexity in Tsunamis, Volcanoes, and their Hazards, 561–617. New York, NY: Springer US, 2009. http://dx.doi.org/10.1007/978-1-0716-1705-2_579.

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Sheets, Payson. "Explosive Volcanic Eruptions and Societal Responses." In The Angry Earth, 77–79. Second edition. | Abingdon, Oxon; New York, NY: Routledge, 2020.: Routledge, 2019. http://dx.doi.org/10.4324/9781315298917-10.

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Sheets, Payson. "Explosive Volcanic Eruptions and Societal Responses." In The Angry Earth, 60–76. Second edition. | Abingdon, Oxon; New York, NY: Routledge, 2020.: Routledge, 2019. http://dx.doi.org/10.4324/9781315298917-9.

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Neri, Augusto, Tomaso Esposti Ongaro, Mattia de’ Michieli Vitturi, and Matteo Cerminara. "Multiphase Flow Modeling of Explosive Volcanic Eruptions." In Mechanical Engineering Series, 243–81. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-68578-2_10.

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Perugini, Diego. "Magma Mixing: The Trigger for Explosive Volcanic Eruptions." In The Mixing of Magmas, 135–48. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-81811-1_10.

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Karátson, Dávid, Daniel Veres, Pierre Lahitte, Tamás Telbisz, Sabine Wulf, Ralf Gertisser, Stéphane Dibacto, et al. "Evolution of the Ciomadul Volcanic Field—Lava Domes and Explosive Eruptions." In Ciomadul (Csomád), The Youngest Volcano in the Carpathians, 39–63. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-89140-4_3.

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Jones, P. D., and P. M. Kelly. "The Effect of Tropical Explosive Volcanic Eruptions on Surface Air Temperature." In The Mount Pinatubo Eruption, 95–111. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-61173-5_10.

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Sawada, Y. "Detection of Explosive Eruptions and Regional Tracking of Volcanic Ash Clouds with Geostationary Meteorological Satellite (GMS)." In Monitoring and Mitigation of Volcano Hazards, 299–314. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-80087-0_9.

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Conference papers on the topic "Explosive volcanic eruptions Victoria"

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Gusev, V. A., A. L. Sobissevitch, Bengt Enflo, Claes M. Hedberg, and Leif Kari. "On A Problem Of Propagation Of Shock Waves Generated By Explosive Volcanic Eruptions." In NONLINEAR ACOUSTICS - FUNDAMENTALS AND APPLICATIONS: 18th International Symposium on Nonlinear Acoustics - ISNA 18. AIP, 2008. http://dx.doi.org/10.1063/1.2956241.

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Taddeucci, Jacopo, Piergiorgio Scarlato, Elisabetta Del Bello, Giancarlo Tamburello, and Damien Gaudin. "Eruptions from UV to TIR: multispectral high-speed imaging of explosive volcanic activity." In Hyperspectral Imaging and Sounding of the Environment. Washington, D.C.: OSA, 2018. http://dx.doi.org/10.1364/hise.2018.hm2c.2.

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Saito, T., H. Yamashita, and K. Takayama. "CFD Application to Construction of Hazard Maps of Volcanic Eruptions." In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1599.

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Shock wave propagation due to explosive-type volcano eruptions are numerically simulated in order to produce hazard maps. Different types of damages caused by pyroclastic-surge and ballistic fragments as well as positive and negative pressure loading are related to the maximum overpressure of the blast waves. Hazard maps produced by the present method is useful for establishing better safety countermeasures for volcanic eruptions. Simulations of blast wave propagation take the complex terrain of the interested area into account. Several eruption models for the energy release such as the reservoir-break model and the jet models are considered and discussed. The three-dimensional numerical code employs the finite volume method with WAF scheme for evaluating the numerical fluxes at the cell interface. The WAF scheme is one of the high-order Godunov schemes and HLLC approximate Riemann solution is used in the present work.
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Shankle, Madison G. "CYCLICITY OF EXPLOSIVE BASALTIC ERUPTIONS AT AN INTRAPLATE VOLCANO, AKAROA VOLCANIC COMPLEX, NEW ZEALAND." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-287222.

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Marzano, F. S., S. Marchiotto, S. Barbieri, D. Schneider, C. Textor, and G. Giuliani. "Ground-based radar remote sensing of explosive volcanic ash eruptions: Numerical models and quantitative applications." In 2008 Second Workshop on Use of Remote Sensing Techniques for Monitoring Volcanoes and Seismogenic Areas (USEReST). IEEE, 2008. http://dx.doi.org/10.1109/userest.2008.4740352.

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Ichihara, Mie, Daniel Rittel, and M. B. Rubin. "Deformation and Fracture of a Silicate Melt Around Tg: Implications to Dynamics of Volcanic Eruptions." In ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59494.

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The mechanical properties of magma around the glass transition temperature have not been characterized yet, though this subject is considered to be important in dynamics of volcanic eruptions. In this paper, we present an experimental investigation of stress-strain relation of synthetic magma at various temperatures and strain rates. The material behaves as an elastic solid at low temperature and/or high strain rate, and as a viscous fluid at high temperature and/or low strain rate. In the transition, it reveals work-hardening response. Although the work-hardening nature has not been reported for noncrystalline magma, it is important in constructing a mathematical model to represent the flow-to-fracture transition of magma, namely the transition of eruptions from effusive to explosive styles.
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Ohrmundt, Sierra C., Richard E. Hanson, and Virginia P. Andrews. "INTRUSIVE PYROCLASTIC ROCKS FORMED DURING EXPLOSIVE ANDESITIC ERUPTIONS IN A MESOPROTEROZOIC VOLCANIC ARC SETTING, BARBY FORMATION, SW NAMIBIA." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-306948.

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Ward, Peter. "CLIMATE CHANGE THROUGHOUT EARTH HISTORY IS CAUSED BY LARGE BASALTIC LAVA FLOWS IN SUBAERIAL RIFT ZONES CAUSING RAPID GLOBAL WARMING WHILE EXPLOSIVE ERUPTIONS IN VOLCANIC ARCS FORM AEROSOLS THAT CAUSE SLOW, INCREMENTAL COOLING OVER MILLENNIA." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-355607.

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Ward, Peter L. "PLATE TECTONICS CONTROLS GLOBAL CLIMATE CHANGE BY DETERMINING THE FREQUENCY OF MAJOR EXPLOSIVE, SUBDUCTION-RELATED VOLCANIC ERUPTIONS CAUSING INCREMENTAL GLOBAL COOLING VERSUS THE EXTENT OF SUBAERIAL, RIFT-RELATED, EFFUSIVE, BASALTIC LAVA FLOWS CAUSING SUDDEN GLOBAL WARMING, OCEAN ACIDIFICATION, MASS EXTINCTIONS, AND OFTEN THE ENDS OF GEOLOGIC EONS, ERAS, PERIODS, ETC." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-307380.

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Reports on the topic "Explosive volcanic eruptions Victoria"

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Albright, Jeff, Kim Struthers, Lisa Baril, and Mark Brunson. Natural resource conditions at Valles Caldera National Preserve: Findings & management considerations for selected resources. National Park Service, June 2022. http://dx.doi.org/10.36967/nrr-2293731.

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Valles Caldera National Preserve (VALL) encompasses 35,977 ha (88,900 ac) in the Jemez Mountains of north-central New Mexico and is surrounded by the Santa Fe National Forest, the Pueblo of Santa Clara, and Bandelier National Monument. VALL’s explosive volcanic origin, about 1.23 million years ago, formed the Valles Caldera—a broad, 19- to 24-km (12- to 15-mi) wide circular depression. It is one of the world’s best examples of a young caldera (in geologic time) and serves as the model for understanding caldera resurgence worldwide. A series of resurgent eruptions and magmatic intrusive events followed the original explosion, creating numerous volcanic domes in present day VALL—one of which is Redondo Peak at an elevation of 3,430 m (11,254 ft), which is the second highest peak in the Jemez Mountains. In fact, VALL in its entirety is a high-elevation preserve that hosts a rich assemblage of vegetation, wildlife, and volcanic resources. The National Park Service (NPS) Natural Resource Condition Assessment (NRCA) Program selected VALL to pilot its new NRCA project series. VALL managers and the NRCA Program selected seven focal study resources for condition evaluation. To help us understand what is causing change in resource conditions, we selected a subset of drivers and stressors known or suspected of influencing the preserve’s resources. What is causing change in resource conditions? Mean temperatures during the spring and summer months are increasing, but warming is slower at VALL than for neighboring areas (e.g., Bandelier National Monument). The proportion of precipitation received as snow has declined. From 2000 to 2018, forest pests damaged or killed 75% of the preserve’s forested areas. Only small, forested areas in VALL were affected by forest pests after the 2011 Las Conchas and the 2013 Thompson Ridge fires. The all-sky light pollution model and the sound pressure level model predict the lowest degree of impacts from light and sound to be in the western half of the preserve.
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