Emily C. Bamber (Avtor), Giuseppe La Spina (Avtor), Fabio Arzilli (Avtor), Margherita Polacci (Avtor), Lucia Mancini (Avtor), Mattia de’ Michieli Vitturi (Avtor), Daniele Andronico (Avtor), Rosa Anna Corsaro (Avtor), Mike R. Burton (Avtor)

Povzetek

Explosivity of basaltic eruptions is related to the efficiency in which exsolved gas can separate from the melt during ascent, which is controlled by magma permeability. However, basaltic pyroclasts from eruptions of varying explosivity can show similar permeability, indicating a possible complex relationship between permeability, outgassing and eruptive style. Here, we provide 3D measurements of basaltic pyroclasts using X-ray microtomography. We investigate the role of permeability and outgassing on magma ascent dynamics by using a numerical conduit model. Among the permeable parameters, bubble number density and friction coefficient largely affect explosivity. However, for fast ascending basaltic magmas, gas-melt coupling is maintained independent of magma permeability. In this case, magma storage conditions may determine eruptive style, driving rapid magma ascent, crystallisation and bubble nucleation, producing a highly explosive eruption. Monitoring parameters which reveal pre-eruptive conditions may assist hazard mitigation, particularly for basaltic systems which exhibit a wide range in eruptive style.

Ključne besede

naravne nevarnosti;petrologija;vulkanologija;natural hazards;petrology;volcanology;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: ZAG - Zavod za gradbeništvo Slovenije
Založnik: London Springer Nature
UDK: 55
COBISS: 180385795 Povezava se bo odprla v novem oknu
ISSN: 2662-4435
Št. ogledov: 96
Št. prenosov: 44
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: naravne nevarnosti;petrologija;vulkanologija;
Komentar vira: Nasl. z nasl. zaslona; Opis vira z dne 10.1. 2024;
Strani: str. 1-16
Letnik: ǂVol. ǂ5
Zvezek: article no. 3
Čas izdaje: 2024
DOI: 10.1038/s43247-023-01182-w
ID: 22348658