Physics
Scientific paper
May 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3309304f&link_type=abstract
Geophysical Research Letters, Volume 33, Issue 9, CiteID L09304
Physics
3
Seismology: Volcano Seismology (8419), Volcanology: Volcano Monitoring (7280), Volcanology: Instruments And Techniques, Volcanology: Volcanic Hazards And Risks
Scientific paper
This study concerns the unstable scarp named Sciara del Fuoco (SDF) at Stromboli volcano, merging geo-structural 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.
Falsaperla Susanna
Neri Marco
Pecora E.
Spampinato Salvo
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