To investigate the spatial and temporal history records of debris-flow activity in the Maritime Alps (Northwest Italy), a dendrochronological analysis was performed in Piano del Valasco and S. Anna di Vinadio sectors These areas are characterized by a high frequency of debris-flow activity and are uniformly covered by Larix decidua Mill. A total of five debris-flow fans were analyzed sampling more than 500 trees. Moreover, a geomorphological survey of the source areas, flow channels and final lobes was performed. The dendrochronological results improve the knowledge of debris-flow occurrence in the Maritime Alps for the last two centuries, confirming some historical records and adding new events. Around the middle of the last century (1948-1950) huge debris flows affected the analyzed fans, destroying most of the trees. Eventually, several others events are recorded, most of them previously not documented in this region.

Dendrogeomorphological investigations of debris flow in the Maritime Alps (Northwestern Italy)

RIBOLINI, ADRIANO
2003

Abstract

To investigate the spatial and temporal history records of debris-flow activity in the Maritime Alps (Northwest Italy), a dendrochronological analysis was performed in Piano del Valasco and S. Anna di Vinadio sectors These areas are characterized by a high frequency of debris-flow activity and are uniformly covered by Larix decidua Mill. A total of five debris-flow fans were analyzed sampling more than 500 trees. Moreover, a geomorphological survey of the source areas, flow channels and final lobes was performed. The dendrochronological results improve the knowledge of debris-flow occurrence in the Maritime Alps for the last two centuries, confirming some historical records and adding new events. Around the middle of the last century (1948-1950) huge debris flows affected the analyzed fans, destroying most of the trees. Eventually, several others events are recorded, most of them previously not documented in this region.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11568/80256
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