Physics
Scientific paper
May 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3310404i&link_type=abstract
Geophysical Research Letters, Volume 33, Issue 10, CiteID L10404
Physics
3
Hydrology: Debris Flow And Landslides, Hydrology: Sediment Transport (4558), Hydrology: Catchment
Scientific paper
Many debris flows initiate in steep channels (>20 degrees), yet studies have focused on lower-gradient streams where failure is controlled by water height above channel deposits. Multiple debris flows in a steep channel in Ohya landslide, central Japan, were linked to infilling processes (i.e., freeze-thaw and dry ravel) and partial saturation of accumulated sediment. Because of very active geomorphic processes in this catchment, 39 debris flows were observed in the past 6 yr. Pre- and post event imagery indicates selective transport of finer materials during most debris flows that comprise saturated and unsaturated flows; however, fluvial sediment processes, important in relation to debris flow initiation in gentler channels, were minimal. Critical conditions for the movement of such unsaturated materials are derived by equating shear stress with solid friction of the channel bed.
Imaizumi Fumitoshi
Ohsaka Okihiro
Sidle Roy C.
Tsuchiya Satoshi
No associations
LandOfFree
Hydrogeomorphic processes in a steep debris flow initiation zone does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Hydrogeomorphic processes in a steep debris flow initiation zone, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrogeomorphic processes in a steep debris flow initiation zone will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1007774