caa a22 4500 445365080 CHVBK 20180317142927.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s11001-011-9128-y doi (NATIONALLICENCE)springer-10.1007/s11001-011-9128-y Flash-flood hyperpycnal flows generating shallow-water landslides at Fiumara mouths in Western Messina Strait (Italy) [Elektronische Daten] [D. Casalbore, F. Chiocci, G. Scarascia Mugnozza, P. Tommasi, A. Sposato] On October 1, 2009, a small area along the Sicilian coast between the villages of Scaletta Zanclea and Giampilieri was struck by intense and concentrated rainfall causing countless small landslides widespread over the catchment area of steep subaerial creeks, locally known as Fiumara. Dense and quick debris flows were channelized within the Fiumara and destructively hit the villages and entered the sea, where they likely transformed into hyperpycnal flows. The availability of pre- and post-flood high-resolution bathymetry allows us to recognize the main features and the most significant morphological variations related to the impact of the flows on the seafloor. The passage of hyperpycnal flows on the seafloor possibly produced a suite of mass-wasting events, encompassing sheet landslides (i.e. erosive scours), retrogressive slope failure on loose sediment at the canyon headwall and rock-falls on the conglomeratic bedrock along canyon sidewall. The possible causes of these events are discussed on the basis of available morphological evidence and geotechnical considerations. Finally, the widespread occurrence of mass-wasting features (i.e. submarine landslide scars) morphologically similar to those generated by the 2009 flash flood allows us to hypothesize, from one side, a strong correlation between this catastrophic event and the evolution of submarine canyons, and from the other side, the possible use of these features for the assessment of flash-flood occurrence. Springer Science+Business Media B.V., 2011 Seafloor mapping nationallicence Bathymetric residual nationallicence Submarine instability nationallicence Hyperpycnal flow nationallicence Sicily nationallicence Casalbore D. CNR, Istituto di Geologia Ambientale e Geoingegneria, Rome, Via Salaria km 29.300, Monterotondo Stazione, 00016, Rome, Italy aut Chiocci F. Dip. Scienze della Terra, University of Rome Sapienza, P.le Aldo Moro 5, 00185, Rome, Italy aut Scarascia Mugnozza G. Dip. Scienze della Terra, University of Rome Sapienza, P.le Aldo Moro 5, 00185, Rome, Italy aut Tommasi P. CNR, Istituto di Geologia Ambientale e Geoingegneria, Rome, Via Salaria km 29.300, Monterotondo Stazione, 00016, Rome, Italy aut Sposato A. CNR, Istituto di Geologia Ambientale e Geoingegneria, Rome, Via Salaria km 29.300, Monterotondo Stazione, 00016, Rome, Italy aut Marine Geophysical Research Springer Netherlands 32/1-2(2011-03-01), 257-271 0025-3235 32:1-2<257 2011 32 11001 https://doi.org/10.1007/s11001-011-9128-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11001-011-9128-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Casalbore D. CNR, Istituto di Geologia Ambientale e Geoingegneria, Rome, Via Salaria km 29.300, Monterotondo Stazione, 00016, Rome, Italy aut NATIONALLICENCE 700 1- Chiocci F. Dip. Scienze della Terra, University of Rome Sapienza, P.le Aldo Moro 5, 00185, Rome, Italy aut NATIONALLICENCE 700 1- Scarascia Mugnozza G. Dip. Scienze della Terra, University of Rome Sapienza, P.le Aldo Moro 5, 00185, Rome, Italy aut NATIONALLICENCE 700 1- Tommasi P. CNR, Istituto di Geologia Ambientale e Geoingegneria, Rome, Via Salaria km 29.300, Monterotondo Stazione, 00016, Rome, Italy aut NATIONALLICENCE 700 1- Sposato A. CNR, Istituto di Geologia Ambientale e Geoingegneria, Rome, Via Salaria km 29.300, Monterotondo Stazione, 00016, Rome, Italy aut NATIONALLICENCE 773 0- Marine Geophysical Research Springer Netherlands 32/1-2(2011-03-01), 257-271 0025-3235 32:1-2<257 2011 32 11001 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer