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Doctoral thesis
Open access
English

Investigating volcanic eruptions of silicic magmas using 3D textural analysis and computational fluid dynamics

ContributorsDegruyter, Wim
Collection
  • Terre et Environnement; 93
Defense date2010-06-08
Abstract

Explosive volcanic eruptions are known to dramatically impact life on Earth and makes the understanding of volcanic phenomena important for society today. The style of volcanic eruptions of silicic magmas ranging from slow effusive outpourings of lava to violent explosive Plinian eruptions is explored in this thesis. During magma rise to the Earth's surface bubble networks can form inducing gas escape from the magma. When this process of magma outgassing is efficient, eruptions lose their energy and may effuse as lava flows or as domes. When exsolved gas cannot escape easily, the magma foam may fragment and the flow style abruptly shifts to a turbulent gas flow carrying magma fragments. Magma outgassing and fragmentation govern the effusive-explosive transition and are investigated by means of studying the pumices formed by the Kos Plateau Tuff eruption in combination with computational fluid dynamics of conduit flow.

eng
Citation (ISO format)
DEGRUYTER, Wim. Investigating volcanic eruptions of silicic magmas using 3D textural analysis and computational fluid dynamics. 2010. doi: 10.13097/archive-ouverte/unige:12052
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Technical informations

Creation08/12/2010 3:37:00 PM
First validation08/12/2010 3:37:00 PM
Update time03/14/2023 4:07:19 PM
Status update03/14/2023 4:07:19 PM
Last indexation05/02/2024 11:47:31 AM
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