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A numerical model of ballistic transport with collisions in a volcanic setting

Published in Computers & Geosciences. 2014, vol. 63, p. 62-69
Abstract Fragments associated with explosive volcanic eruptions range from microns to meters in diameter, with the largest ones following ballistic trajectories from the eruptive vent. Recent field observations suggest that bombs ejected during Strombolian eruptions may collide while airborne. We developed a Discrete Event Simulator to study numerically the impact of such collisions on hazard assessment. We show that the area where bombs can land might be significantly increased when collisions occur. As a consequence, if collisions are dominant, the deposition distance cannot be used to estimate important eruption parameters, such as exit speed.
Keywords Volcanic eruptionBallistic transportDiscrete Event Simulation (DES)
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Research group Physical Volcanology and Geological Risk
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TSUNEMATSU, Kae et al. A numerical model of ballistic transport with collisions in a volcanic setting. In: Computers & Geosciences, 2014, vol. 63, p. 62-69. doi: 10.1016/j.cageo.2013.10.016 https://archive-ouverte.unige.ch/unige:40477

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Deposited on : 2014-09-24

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