GeoSed - Associazione Italiana per la Geologia del Sedimentario
Dipartimento di Scienze della Terra dell'Università di Siena
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53100 Siena
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Table of Contents


Vol. 9 - 2010

Vol. 8 - 2009

Vol. 7 - 2008
SP 1 - 2008

Vol. 6 - 2007
Vol. 5 - 2006
Vol. 4 - 2005
Vol. 3 - 2004
Vol. 2 - 2003
Vol. 1 - 2001-2002

Notes for Authors
(PDF - 80 kb)



GeoActa Special Publication 1 2008


Acquisto online

GeoActa
an international Journal of Earth Sciences



Vinicio Manzi
Dipartimento di Scienze della Terra, Università degli Studi di Parma, Parco Area delle Scienze 157/A, 43100, Parma, Italy. E-mail: vinicio.manzi@unipr.it
Enrico Leuratti, Claudio Corrado Lucente, Elena Medda
Servizio Tecnico Bacini Panaro e destra Secchia, Regione Emilia-Romagna, Via Fonteraso 15, 41100 Modena, Italy
Matteo Guerra, Alessandro Corsini
Dipartimento di Scienze della Terra, Università degli Studi di Modena e Reggio Emilia, Largo S. Eufemia 1, 41100, Modena, Italy

Historical and recent hydrogeological instability in the Monte Modino area: Valoria, Tolara and Lezza Nuova landslide reactivations (Dolo-Dragone valleys, Modena Apennines, Italy)


Volume 3, 2004, pages 1-13

PDF (472 KB)
Abstract

Following the heavy rainfalls of autumn 2000 a strong resumption of hydrogeological instability was observed throughout the whole Emilian Apennines. In the Modena province the effect of such event was the reactivation of many landslides. In the Monte Modino area (an elongated mountain ridge bounded by Dolo and Dragone stream valleys, high Modena Apennines) three large complex landslides (Valoria, Tolara and Lezza Nuova) were reactivated. While landslides were triggered by a strong increase in precipitation, the main cause of slope instability is possibly related to the peculiar hydrogeological setting of the watershed: a thick unit of highly fracturated sandstones overlying a clayey formation. In this paper, the role of abundant rainfall events, periodically occurring in the Modena Apennines, as primary cause for landslide reactivation is discussed.
The preliminary stabilisation works adopted by the “Servizio Tecnico Bacini Panaro e destra Secchia Modena”, have been restricted to restoration of slope stability with rehabilitation of the drainage system within each single landslide, mainly during emergencies.
We believe that, due to the peculiar hydrogeological setting of Monte Modino area, future interventions should provide the stabilization of the whole watershed area. An overall drainage of Monte Modino sandstone unit is proposed to achieve this target.

Keywords: complex landslides, historical reactivations, hydrogeological hazards, Northern Apennines