Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"Volcanic Hazards"”.
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Cultural Responses to volcanic hazards on Mt Merapi, Indonesia
… evolved in order to reduce the impact of natural hazards by incorporating social sciences into physical hazard studies. This science has revealed that a community's ability to anticipate, cope with and recover from the impact of natural hazards relies upon that society's vulnerability. The concept …
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Using Computer Visualisations to Educate and Communicate Volcanic Hazards to At-Risk Communities
… number of people living in proximity to active volcanic centres worldwide, there is a greater need to provide effective and engaging education and outreach programmes to reduce vulnerability and prepare exposed communities for potential future volcanic eruptions. The finalisation of the Sendai …
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A GIS-Based Volcanic Hazard and Risk Assessment of Eruptions Sourced within Valles Caldera, New Mexico
… in the United States due to the great amount of volcanic activity over the last 1.61 Ma. Although Valles caldera is currently dormant, there is potential for future volcanic activity, and therefore it is prudent to assess the risk to the surrounding area well before a disaster strikes. The …
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Volcano-tectonic history and volcanic hazard assessment of the 22.5-29°S segment of the Central Volcanic Zone of the Andes
Evaluating volcanic hazards typically focusses on single eruptive centres or spatially restricted areas, such as volcanic fields. Expanding hazard assessment across wide regions (e.g., large sections of a continental margin) has been rarely attempted, due to the complexity of integrating temporal …
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Documenting Magnatic Processes at Filicudi Island, Aeolian Arc, Italy: Integrating Quantitative Modeling and Plagioclase Textural and in situ Compositional Data
… for forecasting eruption styles and managing volcanic hazards. Compositional diversity of magmas develops through recharge, assimilation, and fractional crystallization (RAFC) within subvolcanic magma reservoirs. Integration of MELTS modeling, whole rock, plagioclase textural and in situ …
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Vulnerability to jökulhlaup hazards: A case study of the Þjórsá floodplain, Southern Iceland
… 2014-2015 eruption at the subglacial Barðarbunga volcanic system heightened awareness of volcanic hazards, particularly to the potential impacts of jökulhlaups. One area in southern Iceland, located around the Þjórsá River and bordered by the Hvítá and Rangá rivers, is particularly vulnerable to …
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Tephra Transport, Sedimentation and Hazards
… are one 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 …
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Volcanology from space: applications of infrared remote sensing
… interpretation of multispectral infrared data of volcanic thermal features. Data from the two short wavelength infrared (SWIR) bands of the Landsat Thematic Mapper (TM) are used to constrain sizes and temperatures of subpixel resolution hot spots. Analysis of a 1989 TM scene of Lonquimay volcano …
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Thermally generated convection and precipitation over volcanoes: Numerical modelling of flow over Montserrat
… active volcanoes is known to trigger dangerous volcanic hazards, from remobilising loose surface material into lahars or mudflows, to initiating explosive activity such as pyroclastic flows. The effect of a heated volcanic surface on the atmospheric circulation is investigated here – including …
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Geomorphic Reconstruction and 3D Visualisation of a Tenth Century Volcanic Jökulhlaup at Sólheimajökull Glacier, South Iceland
… or by meltwater released during sub-glacial volcanic eruptions; or a combination of both. <br/>This research reconstructs a Tenth Century jökulhlaup at Sólheimajökull; a southern outlet glacier of Mýrdalsjökull ice cap overlying Katla volcano. The flood permanently altered sandur topography …
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Insights into the edifice stability of oceanic volcanoes from direct shear experiments and numerical models
… (oceanic volcanoes). Beyond the primary hazards commonly associated with volcanic activity, oceanic volcanoes pose the additional risk of secondary hazards such as tsunamis, which are frequently triggered by flank or sector collapses. This thesis aims to contribute to the understanding of …
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Volcanostratigraphy using geophysical methods on La Fossa di Vulcano (S-Italy)
… For the tuff cone La Fossa the most likely volcanic hazards are the emplacement of pyroclastic deposits as well as gas hazards (especially SOx and CO2), due to this the detailed knowledge of the stratigraphy is mandatory. Most of the population resides in Vulcano Porto and the nearby sited …
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An investigation of complex deformation patterns detected by using InSAR at Llaima and Tendürek volcanoes
Surface displacement at volcanic edifices is related to subsurface processes associated with magma movements, fluid transfers within the volcano edifice and gravity-driven deformation processes. Understanding of associated ground displacements is of importance for assessment of volcanic hazards. …
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Investigating Volcano-Tectonic Interactions in the Natron Rift, East Africa with Implications for Understanding Volcanic Eruptive Processes
… breakup associated with observed changes in the volcanic plumbing system of the active volcano Ol Doinyo Lengai. The Natron Rift is a magma-rich rift in the southern segment of the Eastern Branch in northern Tanzania providing an ideal setting to explore the interactions between tectonic and …