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 7 of 7 for “"Volcanic gases."”.
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Infrared spectroscopy of volcanic gases at Masaya, Nicaragua
Volcanic gases carry valuable information about processes occurring at active volcanoes, and so their accurate measurement and analysis are highly desirable. Masaya is a low-lying persistently active basaltic volcano, which is renowned for strong passive gas emission unaccompanied by lava …
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Retrieval Advances of BrO/SO2 Molar Ratios from NOVAC
Measurements of magnitude and composition of volcanic gas emissions allow insights in magmatic processes. Within the Network for Observation of Volcanic and Atmospheric Change(NOVAC) automatically scanning UV-spectrometers are monitoring gas emission at volcanoes. The emissions of BrO and SO2 can …
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Petrological insights into pre- and syn-eruptive degassing at Ambrym volcano, Vanuatu
… recently identified as a prodigious emitter of volcanic gases. Typical activity at this volcano entails heavy degassing from quasipermanent lava lakes, with Strombolian activity of fluctuating intensity. This is punctuated on an approximately decadal timescale by moderate sub-Plinian paroxysms, …
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Degassing Behaviour of Basaltic Open Vent Volcanoes
… by using a combination of remote sensing of volcanic gases, magma modelling and fluid dynamics. The first problem relates to gas-flow through particle-liquid suspension; with relevance for understanding the mechanism of intermittency and chemical changes in the gas composition in basaltic …
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Crust-mantle interactions and connections with the geodynamic system in the origin and circulation of fluids in the Comoros Archipelago - Indian Ocean
… leader of the Commission on the Chemistry of Volcanic Gases (CCVG), who referred to volcanic gas emissions as a “telegram from the Earth’s interior”. This research represents an attempt to read and interpret as much as possible from such complex messages with regard to an area of extreme …
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Volatile chemistry, and nitrogen sources and fluxes, in subduction zones : insights from the Izu-Bonin-Mariana Arc
… of volatiles being emitted from the active volcanic front of the Izu-Bonin-Mariana (IBM) arc was undertaken in order to investigate the sources, flux, and mass balance of nitrogen across this 'cool' convergent margin. The IBM arc is an ideal location to study volatile recycling in subduction …
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A geotechniques-based exploratory investigation of vog impacts to the environmental system on Hawai'i island.
… as negative impacts to vegetation health due to volcanic emissions (vog) from Kilauea Volcano are investigated using exploratory statistics, a geographical information system (GIS), and remote sensing techniques. Results were inconclusive concerning possible vog impacts to vegetation health; but …