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| Titel |
Influences of hydrological and hydrogeological conditions on debris flows in peri-vesuvian hillslopes |
| VerfasserIn |
P. Vita, V. Piscopo |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 2, no. 1/2 ; Nr. 2, no. 1/2, S.27-35 |
| Datensatznummer |
250000263
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| Publikation (Nr.) |
 copernicus.org/nhess-2-27-2002.pdf |
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| Zusammenfassung |
| The paper
illustrates some results of research carried out to assess factors
triggering debris flows which involve the pyroclastic overburdens covering
carbonate mountains around Vesuvius. The aims of the research were to
reconstruct a relationship between rainfall and debris flow occurrence and
to highlight empirical hydrological thresholds through rainfall pattern
analysis. The research was also aimed at investigating hydrogeological
features of a pyroclastic cover-carbonate bedrock system to analyse
factors inducing temporary hydraulic flow, critical for pyroclastic soil
stability. The results of research are the following: i) rainfall pattern
highlights empirical hydrological thresholds that differentiate the
Lattari and Salerno Mountains from the Sarno Mountains; ii) in some sample
areas of the Sarno Mountains close to the trigger zones of the landslides
of May 1998 strong variation in hydraulic conductivity has been found in
the first few meters below the surface; iii) these permeability variations
would seem to justify temporary perched water tables that might affect the
stability of the pyroclastic mantle. |
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