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http://hdl.handle.net/2122/2220
Authors: | Falsaperla, S.* Neri, M.* Pecora, E.* Spampinato, S.* |
Title: | Multidisciplinary study of flank instability phenomena at Stromboli volcano, Italy | Journal: | GEOPHYSICAL RESEARCH LETTERS | Series/Report no.: | 9/33 (2006) | Publisher: | AGU | Issue Date: | 2006 | DOI: | 10.1029/2006GL025940 | Keywords: | NONE | Subject Classification: | 04. Solid Earth::04.02. Exploration geophysics::04.02.99. General or miscellaneous 04. Solid Earth::04.04. Geology::04.04.09. Structural geology 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics |
Abstract: | This study concerns the unstable scarp named Sciara del Fuoco (SDF) at Stromboli volcano, merging geostructural observations, live-cam records in the visible and IR bands, analysis of vertical aerial photographs, and seismic records. These are used to assess morpho-structural changes between 2002 and 2004. The onset of the lava effusion on 28 December, 2002 preceded a gravitational collapse by two days, affecting a wide area of the SDF above and below sea level. We surmise that the collapse enhanced latent instability of the scarp. The 2002–2003 lava flows had a remarkable stabilizing effect on wide portions (>50%) of the SDF, whilst erosive phenomena continued in the zone not covered by lava. This caused unrelenting regression of the upper landslide scarp toward the summit craters in the form of rockfalls and debris flows. If the crater conduit were involved in the sliding, then a change in eruptive behavior cannot be excluded. |
Appears in Collections: | Article published / in press |
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