Consequences of forest fires on the hydrogeological response of mountain catchments: a case study of the Riale Buffaga,Ticino, Switzerland |
| |
| Authors: | Marco Conedera Larissa Peter Peter Marxer Felix Forster Dieter Rickenmann Lorenza Re |
| |
| Abstract: | The debris flow of 28 August 1997 which occurred in the Riale Buffaga, a torrent channel in the territory of the village of Ronco s./Ascona (Ticino, Switzerland), has been simulated with a good degree of reliability due to the existence of morphologic surveys of the torrent channel preceding the flood event and the presence of a rain gauge that registered the rainfall event at a resolution of 10 minutes. With these data it is possible to conduct a quantitative analysis of the effect of a forest fire on the hydrogeological response of a given catchment. In the case at hand, a 10‐year rainfall event caused a 100‐ to 200‐year flood event. This result clearly quantifies the possible consequences of a forest fire in terms of territorial safety. Copyright © 2003 John Wiley & Sons, Ltd. |
| |
| Keywords: | post‐fire effects debris flow mountain catchment flood formation southern Switzerland |
|
|
