Explosive eruption style modulates volcanic electrification signals

CEJ Vossen, C Cimarelli, L D'Auria, V Cigala… - … Earth & Environment, 2024 - nature.com
Volcanic lightning detection has proven useful to volcano monitoring by providing
information on eruption onset, source parameters, and ash cloud directions. However, little …

Turbulence unsteadiness drives extreme clustering

F Zapata, S Angriman, A Ferran, P Cobelli… - Physical Review Letters, 2024 - APS
We show that the unsteadiness of turbulence has a drastic effect on turbulence parameters
and in particle cluster formation. To this end we use direct numerical simulations of particle …

A seismic precursor 15 min before the giant eruption of Hunga Tonga‐Hunga Ha'apai volcano on 15 January 2022

T Horiuchi, M Ichihara, K Nishida… - Geophysical Research …, 2024 - Wiley Online Library
Abstract The 15 January 2022, eruption at Hunga Tonga‐Hunga Ha'apai (HTHH) volcano
started shortly after 4: 00UTC. There had been noted unconfirmed precursory events. We …

Ocean surface gravity waves excited by the 2022 eruption of Hunga Tonga‐Hunga Ha'apai Volcano

K Nishida, M Ichihara, T Kubota… - Geophysical Research …, 2024 - Wiley Online Library
On 15 January 2022, a massive underwater eruption occurred at the Hunga Tonga‐Hunga
Ha'apai Volcano. The plume reached the mesosphere, and the eruption excited a significant …

Volcanic lightning reveals umbrella cloud dynamics of the 15 January 2022 Hunga volcano eruption, Tonga

PA Jarvis, TG Caldwell, C Noble, Y Ogawa… - Bulletin of …, 2024 - Springer
Abstract The 15 January 2022 eruption of Hunga volcano, Tonga, significantly impacted the
Kingdom of Tonga as well as the wider Pacific region. The eruption column attained a …

A seismic precursor 15 minutes before the giant eruption of Hunga Tonga-Hunga Ha'apai volcano on January 15, 2022

T Horiuchi, M Ichihara, K Nishida… - Authorea Preprints, 2024 - essopenarchive.org
The January 15, 2022, eruption at Hunga Tonga-Hunga Ha'apai (HTHH) volcano started
shortly after 4: 00UTC. There had been noted unconfirmed precursory events. We analyzed …

Bounds to the Basset-Boussinesq force on particle laden stratified flows

C Reartes, PD Mininni - arXiv preprint arXiv:2404.19054, 2024 - arxiv.org
The Basset-Boussinesq force is often perfunctory neglected when studying small inertial
particles in turbulence. The force results from the diffusion of vorticity from the particles, and …

Effect of local flow geometry on particle pair dispersion angle

BL Español, M Noseda, PJ Cobelli… - arXiv preprint arXiv …, 2024 - arxiv.org
We combine experiments in a von K\'arm\'an flow with numerical simulations of Taylor-Green
and homogeneous and isotropic turbulence to study the effect of the local flow geometry on …

Impact of Seasonal Climate and Atmospheric Dynamics on Volcanic Plume Dynamics: A Case Study of Eruptions in the North Polar Region

ICD Paguem, FMEA Nyam, BN Nbendjo - 2024 - researchsquare.com
The dynamics of volcanic eruptive columns are significantly influenced by parameters that
characterize atmospheric state. While previous studies have predominantly focused on this …