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May 5, 1998, debris flows in circum-Vesuvian areas (southern Italy): Insights for hazard assessment

2000; Geological Society of America; Volume: 28; Issue: 7 Linguagem: Inglês

10.1130/0091-7613(2000)28 2.0.co;2

1943-2682

M. T. Pareschi, Massimiliano Favalli, F. Giannini, Roberto Sulpizio, Giovanni Zanchetta, Roberto Santacroce,

Groundwater flow and contamination studies

Research Article| July 01, 2000 May 5, 1998, debris flows in circum-Vesuvian areas (southern Italy): Insights for hazard assessment M.T. Pareschi; M.T. Pareschi 1CNR, Centro per lo Studio della Geologia Strutturale e Dinamica dell'Appennino, via Santa Maria 53, I-56100 Pisa, Italy Search for other works by this author on: GSW Google Scholar M. Favalli; M. Favalli 1CNR, Centro per lo Studio della Geologia Strutturale e Dinamica dell'Appennino, via Santa Maria 53, I-56100 Pisa, Italy Search for other works by this author on: GSW Google Scholar F. Giannini; F. Giannini 1CNR, Centro per lo Studio della Geologia Strutturale e Dinamica dell'Appennino, via Santa Maria 53, I-56100 Pisa, Italy Search for other works by this author on: GSW Google Scholar R. Sulpizio; R. Sulpizio 2Dipartimento di Scienze della Terra, University of Pisa, via Santa Maria 53, I-56100 Pisa, Italy Search for other works by this author on: GSW Google Scholar G. Zanchetta; G. Zanchetta 2Dipartimento di Scienze della Terra, University of Pisa, via Santa Maria 53, I-56100 Pisa, Italy Search for other works by this author on: GSW Google Scholar R. Santacroce R. Santacroce 2Dipartimento di Scienze della Terra, University of Pisa, via Santa Maria 53, I-56100 Pisa, Italy Search for other works by this author on: GSW Google Scholar Geology (2000) 28 (7): 639–642. https://doi.org/10.1130/0091-7613(2000)28 2.0.CO;2 Article history received: 02 Feb 2000 rev-recd: 19 Apr 2000 accepted: 24 Apr 2000 first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation M.T. Pareschi, M. Favalli, F. Giannini, R. Sulpizio, G. Zanchetta, R. Santacroce; May 5, 1998, debris flows in circum-Vesuvian areas (southern Italy): Insights for hazard assessment. Geology 2000;; 28 (7): 639–642. doi: https://doi.org/10.1130/0091-7613(2000)28 2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract On May 5, 1998, after 30 h of continuous rainfall (100–180 mm), large areas of the tephra-rich colluvial cover 12–18 km east of Vesuvius volcano (Italy) failed, generating a series of debris flows that killed more than 150 people in the Sarno area. Some 37 basins were affected almost simultaneously by this phenomenon. The Sarno disaster shows that air-fall deposits can create debris-flow hazards that may extend for several decades or even centuries after eruptions. In the Sarno area, the affected basins have the following features: (1) a funnel shape, debouching at the base of the hillslope; (2) an integrated drainage network with a central subrectilinear channel; (3) slopes exceeding 25° on average; and (4) a thin (∼0.5–2.0 m) volcanic-rich colluvial cover related to the past ash fallout of Vesuvius. The stratigraphy of downstream alluvial-fan deposits records the repeated occurrence of large debris flows. On the basis of the 1998 case history, we propose an approach to evaluate hazard potential related to similar debris flows for the neighboring Clanio Valley. This approach is mainly based on morphometric data derived from a digital elevation model and is of potential worldwide application. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.