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Doctor of Philosophy, (Earth Science)
Study Completed: 2015
College of Sciences
The role of substrate hydrogeology and surface hydrology in the construction of phreatomagmatic volcanoes on an active monogenetic field (Auckland, New Zealand)
The city of Auckland is situated on a monogenetic field. A monogenetic field is associated with the eruption of small volcanoes. In the eruptive history of the field, more than 80 percent of erupted volcanoes had an initial phase that included explosive interaction of water with magma (phreatomagmatism). The hazards associated to phreatomagmatic eruptions may be very destructive and hence the importance to reconstruct the eruptive history of Auckland volcanoes to identify their eruptive styles and evaluate their associated hazards. Mr Agustin-Flores studied some of the volcanoes of Auckland and found that the eruptive styles in the course of an eruption, and in turn their associated hazards, strongly depend on the hydrogeological conditions of the rocks beneath the volcanoes and the surface hydrological conditions. Three eruptive scenarios were envisaged and it is possible that these scenarios may be replicated in the future.
Professor Karoly Nemeth
Dr Jan Lindsay
Professor Shane Cronin
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Last updated on Tuesday 04 April 2017