Host Rock Variability Powers the Diversity of Steam-Driven Eruptions

Steam-driven eruptions are explosions that frequently occur in volcanic and geothermal areas. They are powered by the sudden release and expansion of steam and liquid water trapped under high pressure within the pore spaces of host rocks. We have experimentally studied how the strength of rock hosting steam and liquid controls the nature of explosions based on examples from Lake Okaro (New Zealand). Specifically, we used experiments to estimate the relative amounts of energy that goes into breaking rock up, versus that required for ejecting particles upwards and outwards. Here we report the main methodological approach and results of petrophysical properties analyses, decompression experiments and estimation of explosivity of water, respectively.

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Source http://doi.org/doi:10.5880/fidgeo.2020.046
Author Montanaro, Cristian (Ludwig-Maximilians-University Munich, Munich, Germany), Cronin, Shane J. (University of Auckland), Scheu , Bettina Scheu (Ludwig-Maximilians-University Munich, Munich, Germany), Kennedy, Ben (University of Canterbury), Scott, Bradley J. (GNS Science), Dingwell, Donald B. (Ludwig-Maximilians-University Munich, Munich, Germany)
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Citation Montanaro, Cristian, Cronin, Shane J., Scheu , Bettina Scheu, Kennedy, Ben, Scott, Bradley J., Dingwell, Donald B. (2020): GFZ Dataservices http://doi.org/doi:10.5880/fidgeo.2020.046
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Created at repository 2020
Dataset contact Montanaro, Cristian ( Ludwig-Maximilians-University Munich, Munich, Germany Researcher cristian.montanaro@min.uni-muenchen.de )
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Publication date 2020-11-16
Publisher http://www.gfz-potsdam.de
geobox-eLong 176.394
geobox-nLat -38.2944
geobox-sLat -38.3038
geobox-wLong 176.394