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Volcanic welding model: VolcWeld
09 Jul 2019 | Contributor(s): Jeremie Vasseur, Fabian Ben Wadsworth
We provide two products to solve a range of volcanic welding problems. (1) Executable files for Linux or Mac products that solve diffusion of water in rhyolitic volcanic particles during welding with outputs of the average remnant water and the porosity with time. (2) An editable Excel file for...
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Dome rock densification parameters
20 Oct 2014 | Contributor(s): Fabian Ben Wadsworth, Betty Scheu
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Between cyclic eruptions (VUELCO meeting, Barcelona, 2013)
20 Mar 2013 | Contributor(s): Fabian Ben Wadsworth
Volcanic unrest begins with precursory signals which are the detectable manifestation of dynamic subsurface changes. In 1997, Vulcanian eruptions from Soufrière Hills volcano (SHV), Montserrat, had a mean repose time of 9.5 hours and produced remarkably regular precursory signals. Cyclic...
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The onset of dense plug formation during cyclic eruptions at Soufrière Hills Volcano, Montserrat (COV 7, 2012)
20 Mar 2013 | Contributor(s): Fabian Ben Wadsworth, Betty Scheu
Cyclicity at active volcanoes is commonly observed and interpreted to reflect periods of vesiculation and gas pressurisation beneath more dense degassed plugs. In 1997, Vulcanian eruptions from Soufrière Hills volcano (SHV), Montserrat, had a mean repose time of 9.5 hours. We consider the...
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Timescales of dyke widening and draining during an eruption at Red Crater, New Zealand (COV 7, 2012)
20 Mar 2013 | Contributor(s): Fabian Ben Wadsworth
Near-surface basaltic dykes may become unstable when buoyancy and overpressure are not maintained and solidification not fully accomplished. Additionally temporal variation of the dyke geometry such as widening may further compromise stability and induce draining. A 5-10 m wide, variably dipping...