Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/9357
Authors: | Pering, T. D.* Tamburello, G.* McGonigle, A. J. S.* Aiuppa, A.* James, M. R.* Lane, S. J.* Sciotto, M.* Cannata, A.* Patanè, D.* |
Title: | Dynamics of mild strombolian activity on Mt. Etna | Journal: | Journal of volcanology and geothermal research | Series/Report no.: | /300 (2015) | Publisher: | Elsevier Science Limited | Issue Date: | 2015 | DOI: | 10.1016/j.jvolgeores.2014.12.013 | Keywords: | Mild strombolian activity Ultra-violet imaging Volcanic gas measurements Slug dynamics |
Subject Classification: | 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring 04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniques |
Abstract: | Here we report the first measurements of gas masses released during a rare period of strombolian activity at the Bocca Nuova crater, Mt. Etna, Sicily. UV camera data acquired for 195 events over an ≈27 minute period (27th July 2012) indicate erupted SO2 masses ranging from ≈0.1 to ≈14 kg per event, with corresponding total gas masses of ≈0.1 to 74 kg. Thus, the activity was characterised by more frequent and smaller events than typically associated with strombolian activity on volcanoes such as Stromboli. Events releasing larger measured gas masses were followed by relatively long repose periods before the following burst, a feature not previously reported on from gas measurement data. If we assume that gas transport within the magma can be represented by a train of rising gas pockets or slugs, then the high frequency of events indicates that these slugs must have been in close proximity. In this case the longer repose durations associated with the larger slugs would be consistent with interactions between adjacent slugs leading to coalescence, a process expedited close to the surface by rapid slug expansion. We apply basic modelling considerations to the measured gas masses in order to investigate potential slug characteristics governing the observed activity.We also cross correlated the acquired gas fluxes with contemporaneously obtained seismic data but found no relationship between the series in line with the mild form of manifest explosivity. |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | Existing users please Login |
---|---|---|---|---|
Pering et al., 2014 JVGR.pdf | 2.09 MB | Adobe PDF | ||
Dynamics of Mild Strombolian Activity - Author Accepted Manuscript.pdf | Open Access | 1.38 MB | Adobe PDF | View/Open |
WEB OF SCIENCETM
Citations
19
checked on Feb 10, 2021
Page view(s) 50
486
checked on Mar 16, 2024
Download(s) 20
333
checked on Mar 16, 2024