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 10 of 10 for “"eruption forecasting"”.
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INSIGHTS INTO ERUPTION DYNAMICS AND SHALLOW PLUMBING SYSTEM OF MT. ETNA BY INFRASOUND AND SEISMIC SIGNALS
The success in eruption forecasting needs the knowledge of the eruptive processes and the plumbing system of the volcano. Indeed, the eruptive styles are controlled by the interplay between magma dynamics and the plumbing system. In multi-vent volcanoes, such as Mt. Etna, where volcanic activity …
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Attenuation of volcanic seismic signals
… and are considered key tools in monitoring and eruption forecasting. The common element in a variety of models proposed for the origin of these earthquakes is resonance of a fluid body within a volcanic edifice. The source of the resonance is believed to consist of dispersive interface waves, …
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Exploring the use of quantitative modelling approaches to support volcanic crisis management in the Auckland Volcanic Field
… buffer. An updated Bayesian Event Tree for Eruption Forecasting (BET_EF) for the AVF was then tested using eight synthetic pre-eruptive sequences. A sensitivity analysis for the prior distributions for key model parameters explored the utility of using BET_EF outputs as a potential input for …
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Forecasting volcanic unrest through geodetic data assimilation
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
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Fracture mechanics of volcanic eruptions
Seismology is a key tool in the forecasting of volcanic eruptions. The onset of an eruption is often preceded and accompanied by an increase in local seismic activity, driven by fracturing within the edifice. For closed systems, with a repose interval of the order of a century or more, this …
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Study of magnetic helicity in solar active regions and its relationship with solar eruptions
… energy buildup and instability leading to solar eruptions. However, in spite of many years of study, detailed aspects of initiation mechanisms of eruptive events are still not well understood. The objective of this dissertation is to understand a long-term (a few days) variation of magnetic …
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Investigating Volcanic and Glacial Processes Using Microseismicity
… volcano, Iceland, before and after an eruption; icequakes at the bed of glaciers and ice sheets to study and constrain the physics of glacial sliding; and surface icequakes caused by crevassing, to see whether or not the crevasses observed are induced by hydrofracture. I use a …
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Towards Improved Volcano Monitoring via Automatic Classification of Continuous Tremor
… Some of these patterns may be precursors to eruption, or change of volcanic activity state. This is particularly interesting for ‘wet’ volcanic systems such as Whakaari (White Island), which regularly produce steam-explosions that are difficult to predict. An unsupervised classifier based on …
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Magmatic processes at basaltic volcanoes: insights from the crystal cargo
… reservoirs, where melts are stored prior to eruption. Magma reservoirs are complex, open systems, and often multiple reservoirs are partially inter-connected from source to surface, giving rise to the term 'volcanic plumbing system'. Parental melts feeding these reservoirs can have diverse …
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An investigation of complex deformation patterns detected by using InSAR at Llaima and Tendürek volcanoes
… at volcanoes therefore might allow the forecasting of upcoming eruptions to some extent. In geophysics, the measured surface displacements allow the parameters of possible deformation sources to be estimated through analytical or numerical modeling. This is one way to improve the …