Valentin Gueugneau
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Modelling pyroclastic density currents of the April 2021 La Soufrière, St Vincent eruption: from rapid invasion maps to field-constrained numerical simulations Open
The April 2021 La Soufrière of St Vincent eruption generated several pyroclastic density currents (PDCs) during the 2 weeks of the crisis, from 9 to 22 April. To support the hazard assessment team during this eruption, numerical simulation…
A Unifying Model for Pyroclastic Surge Genesis and Pyroclastic Flow Fluidization Open
Pyroclastic density currents (PDCs) are hot and fast ground‐hugging mixtures of volcanic fragments and gases, which represent a major threat to people living near explosive volcanoes. Mechanisms causing the separation into the concentrated…
New Insights Into the 2070calyrBP Pyroclastic Currents at El Misti Volcano (Peru) From Field Investigations, Satellite Imagery and Probabilistic Modeling Open
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Dynamics and Impacts of the May 8th, 1902 Pyroclastic Current at Mount Pelée (Martinique): New Insights From Numerical Modeling Open
The Mount Pelée May 8th, 1902 eruption is responsible for the deaths of more than 29,000 people, as well as the nearly-complete destruction of the city of Saint Pierre by a single pyroclastic current, and is, sadly, the deadliest eruption …
Simulation of block‐and‐ash flows and ash‐cloud surges of the 2010 eruption of Merapi volcano with a two‐layer model Open
A new depth‐averaged model has been developed for the simulation of both concentrated and dilute pyroclastic currents and their interactions. The capability of the model to reproduce a real event is tested for the first time with two well‐…
Effects of pore pressure in pyroclastic flows: Numerical simulation and experimental validation Open
Pyroclastic flows are mixtures of volcanic gases and particles that can be very hazardous owing to their fluid‐like behavior. One possible mechanism to explain this behavior is the reduction of particles friction due to the internal gas po…