Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/5110
Authors: | Zanon, V.* Neri, M.* Pecora, E.* |
Title: | Interpretation of data from the monitoring thermal camera of Stromboli volcano (Aeolian Islands, Italy) | Other Titles: | FLIR thermal monitoring camera, Stromboli | Journal: | Geological Magazine | Series/Report no.: | 4/146 (2009) | Publisher: | Cambridge University Press | Issue Date: | Jul-2009 | DOI: | 10.1017/S0016756809005937 | URL: | http://journals.cambridge.org/action/displayIssue?jid=GEO&volumeId=146&issueId=04 | Keywords: | explosive dynamic thermal video monitoring volcano-tectonic structures volcano collapses Stromboli |
Subject Classification: | 04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous 04. Solid Earth::04.04. Geology::04.04.11. Instruments and techniques 04. Solid Earth::04.07. Tectonophysics::04.07.99. General or miscellaneous 04. Solid Earth::04.07. Tectonophysics::04.07.05. Stress 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics 04. Solid Earth::04.07. Tectonophysics::04.07.08. Volcanic arcs 04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous 04. Solid Earth::04.08. Volcanology::04.08.01. Gases 04. Solid Earth::04.08. Volcanology::04.08.02. Experimental volcanism 04. Solid Earth::04.08. Volcanology::04.08.03. Magmas 04. Solid Earth::04.08. Volcanology::04.08.04. Thermodynamics 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring 04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniques 04. Solid Earth::04.08. Volcanology::04.08.08. Volcanic risk 05. General::05.02. Data dissemination::05.02.99. General or miscellaneous 05. General::05.02. Data dissemination::05.02.03. Volcanic eruptions 05. General::05.08. Risk::05.08.99. General or miscellaneous |
Abstract: | Twenty eruptive events from the Northeast Crater of Stromboli volcano recorded by a thermal monitoring camera in early 2004 were analysed in order to understand the eruptive dynamics. Selected eventswere chosen to be typical of explosions that characterize the steady activity of Stromboli in terms of jet height and duration. Most of the explosions consisted of clast-rich single bursts, originating from the same vent inside the Northeast Crater. Conspicuous ash emission was scarce. Eruptions were preceded by the flashing of a perturbation wave characterized by low temperatures and an average propagation velocity of about 35–100 m s−1. This perturbation was thought to be caused by the bursting of the gas slug at the bottom of the crater and is interpreted as an air wave. This was immediately followed by the expansion of a jet of ‘hot’ gas and particles, at a velocity of 35–75 m s−1. Ejecta coarser than 138 cm appeared ∼1.6–2 s after the onset of the explosion, moving at a variable velocity (30–60 m s−1). Eruptive events were either vertical or inclined 7–13◦ towards the NNW. This inclination is thought to be a consequence either of the morphology of the conduit, following modest rock falls that partially obstructed the uppermost part of the crater, or of the displacement of the internal conduit due to the explosive activity of the volcano. The instability of the summit area is a further possible cause of the deformation of the conduit. |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | Existing users please Login |
---|---|---|---|---|
2009 Zanon, Neri, Pecora GM 2009.pdf | Article | 2.98 MB | Adobe PDF |
WEB OF SCIENCETM
Citations
50
12
checked on Feb 10, 2021
Page view(s) 20
335
checked on Apr 24, 2024
Download(s)
39
checked on Apr 24, 2024