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Multiphase flow behaviour and hazard prediction of pyroclastic density currents
Pyroclastic density currents (PDCs) are dangerous multiphase flows originating from
volcanic eruptions. PDCs cause more than a third of volcanic fatalities globally and …
volcanic eruptions. PDCs cause more than a third of volcanic fatalities globally and …
Sediment waves and the gravitational stability of volcanic jets
It is increasingly recognized that the gravitational stability of explosive eruption columns is
governed by complex ash-pumice-gas (multiphase) interactions as well as the mechanics of …
governed by complex ash-pumice-gas (multiphase) interactions as well as the mechanics of …
Explosive submarine eruptions: The role of condensable gas jets in underwater eruptions
In explosive submarine eruptions, volcanic jets transport fragmented tephra and exsolved
gases from the conduit into the water column. Upon eruption the volcanic jet mixes with …
gases from the conduit into the water column. Upon eruption the volcanic jet mixes with …
Supersaturation nucleation and growth of plagioclase: a numerical model of decompression-induced crystallization
Abstract Supersaturation Nucleation and Growth of Plagioclase (SNGPlag) is a numerical
model that predicts the nucleation and growth of plagioclase crystals in a decompressing …
model that predicts the nucleation and growth of plagioclase crystals in a decompressing …
Dynamics of pyroclastic density currents: Conditions that promote substrate erosion and self-channelization—Mount St Helens, Washington (USA)
The May 18th, 1980 eruption of Mount St. Helens (MSH) produced multiple pyroclastic
density currents (PDCs), burying the area north of the volcano under 10s of meters of …
density currents (PDCs), burying the area north of the volcano under 10s of meters of …
Impact of wind on the condition for column collapse of volcanic plumes
The collapse of volcanic plumes has significant implications for eruption dynamics and
associated hazards. We show how eruptive columns can collapse and generate pyroclastic …
associated hazards. We show how eruptive columns can collapse and generate pyroclastic …
Volcano video data characterized and classified using computer vision and machine learning algorithms
Video cameras are common at volcano observatories, but their utility is often limited during
periods of crisis due to the large data volume from continuous acquisition and time …
periods of crisis due to the large data volume from continuous acquisition and time …
Volcanic jets, plumes, and collapsing fountains: evidence from large-scale experiments, with particular emphasis on the entrainment rate
The source conditions of volcanic plumes and collapsing fountains are investigated by
means of large-scale experiments. In the experiments, gas-particle jets issuing from a …
means of large-scale experiments. In the experiments, gas-particle jets issuing from a …
Topographic controls on pyroclastic density current dynamics: insight from 18 May 1980 deposits at Mount St. Helens, Washington (USA)
Our ability to interpret the deposits of pyroclastic density currents (PDCs) is critical for
understanding the transport and depositional processes that control PDC dynamics. This …
understanding the transport and depositional processes that control PDC dynamics. This …
Complex variations during a caldera-forming Plinian eruption, including precursor deposits, thick pumice fallout, co-ignimbrite breccias and climactic lag breccias: The …
Abstract The 184 ka Lower Pumice 1 eruption sequence records a complex history of
eruption behaviours denoted by two significant eruptive phases:(1) a minor precursor (LP1 …
eruption behaviours denoted by two significant eruptive phases:(1) a minor precursor (LP1 …