Predicting sediment delivery from debris flows after wildfire
Petter Nyman, Hugh G Smith, Christopher B Sherwin, Christoph Langhans, Patrick NJ Lane, Gary J Sheridan
Geomorphology | ELSEVIER SCIENCE BV | Published : 2015
Debris flows are an important erosion process in wildfire-prone landscapes. Predicting their frequency and magnitude can therefore be critical for quantifying risk to infrastructure, people and water resources. However, the factors contributing to the frequency and magnitude of events remain poorly understood, particularly in regions outside western USA. Against this background, the objectives of this study were to i) quantify sediment yields from post-fire debris flows in southeast Australian highlands and ii) model the effects of landscape attributes on debris flow susceptibility. Sediment yields from post-fire debris flows (113-294tha ) are 2-3 orders of magnitude higher than annual backg..View full abstract
The research was funded by the Bushfire Cooperative Research Centre for the Victorian Department of Environment, Land, Water and Planning and the Melbourne Water Corporation. We are also thankful to Philip Noske, Matt Richardson and Rene van der Sant for support in the field. Comments from two anonymous reviewers and the editor helped improve the manuscript.