Publikationsdatum:
2017-04-04
Beschreibung:
Strombolian-type eruptive activity, common at many volcanoes, consists of regular explosions driven by
the bursting of gas slugs that rise faster than surrounding magma. Explosion quakes associated with
this activity are usually localized at shallow depth; however, where and how slugs actually form
remain poorly constrained. We used spectroscopic measurements performed during both quiescent
degassing and explosions on Stromboli volcano (Italy) to demonstrate that gas slugs originate from as
deep as the volcano-crust interface (~3 kilometers), where both structural discontinuities and
differential bubble-rise speed can promote slug coalescence. The observed decoupling between deep
slug genesis and shallow (~250-meter) explosion quakes may be a common feature of strombolian
activity, determined by the geometry of plumbing systems.
Beschreibung:
Published
Beschreibung:
227-230
Beschreibung:
1.2. TTC - Sorveglianza geochimica delle aree vulcaniche attive
Beschreibung:
JCR Journal
Beschreibung:
reserved
Schlagwort(e):
Strombolian activity
;
FTIR
;
04. Solid Earth::04.08. Volcanology::04.08.01. Gases
;
04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring
Repository-Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Materialart:
article
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