Elaboration of a magnitude-frequency relationship for debris flows by aerial photographs: case study from a national park in the Spanish Pyrenees
Tipo de documentoTexto en actas de congreso
Fecha de publicación2012
Condiciones de accesoAcceso restringido por política de la editorial
Magnitude—frequency relationships provide essential information for landslide hazard and risk analysis. A debris-flow inventory was created in the “Aigüestortes i Estany de Sant Maurici” National Park in the Central Pyrenees, Spain, by the interpretation of several sets of aerial photographs covering a time span of 53 years. 194 debris flows were detected, which provide a spatial density of 0.5 events per square kilometre. The areas affected by the debris flows range from ∼200 m2 up to 35000 m2. The magnitude—cumulative frequency curves include a strong rollover effect at about 2000 m2 and events larger than this magnitude can be represented by a power law with an exponent between −1.5 and −1.9.
CitaciónHurlimann, M. [et al.]. Elaboration of a magnitude-frequency relationship for debris flows by aerial photographs: case study from a national park in the Spanish Pyrenees. A: International Symposium on Landslides and North American Symposium on Landslides. "Landslides and engineered slopes: protecting society through improved understanding". Banff, Alberta: CRC Press, 2012, p. 717-722.