Global ETD Search
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Showing 1 to 7 of 7 for “"Plinian eruptions"”.
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A Mineralogical and Geochemical Assessment of the Potential Respiratory Health Hazard of Ash from Sakurajima Volcano, Japan.
… is the most active volcano in Japan. Vulcanian eruptions have occurred almost constantly since 1955, and it continues to erupt hundreds of times a year, repeatedly affecting local populations and the environment. Over the past 30 years, multidisciplinary research has been carried out to …
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Drivers, Dynamics and Hazards of the largest pyroclastic eruptions of Tongariro Volcano, Central North Island, New Zealand
… sequence produced the largest pyroclastic eruptions known from Mt. Tongariro. Within a <200 year period, seven sub-Plinian to Plinian eruption episodes produced at least 4.5 km³ of tephra. This "flare-up" far outstrips the averaged eruption rate of Mt. Tongariro of 0.1-1.0 km³/ka. Mapping …
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Petrology and geochemistry of the recent eruption history at Rabaul Caldera, Papua New Guinea : implications for magmatic processes and recurring volcanic activity
… with synchronous vulcanian and vulcanian-plinian eruptions from Tavurvur and Vulcan, respectively, on opposing sides of the caldera. A second phase of activity (Phase 2), beginning on 28 November 1995 and continuing until the present (2003), is characterised by intermittent vulcanian and …
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Petrology and geochemistry of the recent eruption history at Rabaul Caldera, Papua New Guinea : implications for magmatic processes and recurring volcanic activity
… with synchronous vulcanian and vulcanian-plinian eruptions from Tavurvur and Vulcan, respectively, on opposing sides of the caldera. A second phase of activity (Phase 2), beginning on 28 November 1995 and continuing until the present (2003), is characterised by intermittent vulcanian and …
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Infrared spectroscopy of volcanic gases at Masaya, Nicaragua
… lava extrusion, although it has also undergone plinian eruptions in the past. Its consistent behaviour sustains a reliable tropospheric plume, making it an ideal location at which to study volcanic degassing. <br></br><br></br>During February-March 1998 and March 1999, Masaya's gas plume …
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Experimental studies on the adsorption of SO2 on volcanic ashes
… ash very strongly, so that the impact of such eruptions on the environment is likely to be small. On the other hand, if the SO2 concentration in the volcanic gas is high, only part of it will be adsorbed and a much stronger impact of the eruption on climate is expected. For a plume model with a …
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Tephra Transport, Sedimentation and Hazards
… of the possible outcomes of explosive volcanic eruptions and are the result of vertical settling of volcanic particles that have been expelled from the volcanic vent into the atmosphere, following magma fragmentation within the volcanic conduit. Tephra fallout represents the main volcanic hazard …