The varied and high frequency debris flow is frequently occured in the Jiangjia Gully(JJG)and mass activities occur in some tributaries.To reveal formation of debris flow from many tributaries,landslides are extracted...The varied and high frequency debris flow is frequently occured in the Jiangjia Gully(JJG)and mass activities occur in some tributaries.To reveal formation of debris flow from many tributaries,landslides are extracted from Qucik bird remote sensing image with 0.61 resolution and integral of hypsometric curve(evolution index)is obtained from DEM with 10 m resolution.It is found that there are more landslides distribution in the high evolution state area,which is prone to the occurrence of debris flow activity.Meanwhille,there are temporal and spatial variations between rainfall greatly.Thus it forms diversity debris flow in JJG.As JJG is of tributaries with wide range evolution stages,this is also the reason for the diversity of debris flow in JJG.展开更多
基金supported by the Scientific Research Foundation(Grant No.KYTZ202164)the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDA230902)the Key International S&T Cooperation Projects(Grant No.2016YFE0122400).
文摘The varied and high frequency debris flow is frequently occured in the Jiangjia Gully(JJG)and mass activities occur in some tributaries.To reveal formation of debris flow from many tributaries,landslides are extracted from Qucik bird remote sensing image with 0.61 resolution and integral of hypsometric curve(evolution index)is obtained from DEM with 10 m resolution.It is found that there are more landslides distribution in the high evolution state area,which is prone to the occurrence of debris flow activity.Meanwhille,there are temporal and spatial variations between rainfall greatly.Thus it forms diversity debris flow in JJG.As JJG is of tributaries with wide range evolution stages,this is also the reason for the diversity of debris flow in JJG.
