Topographic Signature Of Debris FlowDominated Channels:Implications For Hazard Assessment

摘要: Debris flows constitute an important transport mechanism in mountain headwaters, which results a topographic signature that is significantly different from of fluvial valleys. This readily visible drainage area-slope diagrams, where reaches follow power law distribution described by the equation S=KA, S channel slope, A area and K n are constants. On other hand, headwater channels with evidences debris-flow activity clearly depart this trend. paper provides additional for phenomenon data basin on northern slope Cantabrian Cordillera (Spain), function defined processes dominant; transition between these two domains analogous to those humid, mountainous regions. Identification dominant based field recognition debris flow evidences. also explores implications analysis hazard at regional scale. significant percentage network study characterized morphometric attributes dominated channels. As result, numerous infrastructures potentially affected process, mainly roads buildings. Additionally, suggests some settlements may be threatened flows. work shows relation useful criterion preliminary identification likely occur.