11:00 AM - 11:15 AM
[HGM03-07] Relationship between channel migration processes and former micro landforms on the riverbed in Kamikochi region, the upper Azusa River, central Japan
Keywords:braided channel, channel migration, micro landform, riverbed, Kamikochi, Azusa river
During the Bai-u rainy season in 2013 and 2017 the major channel migrations occurred. On that days daily rain fall were over 140 mm. Those heavy rain events caused the bankfull discharge and the major channel migration. When the channel migration occurred, without gradual lateral move of channels, former channels were buried and/or narrowed and new main channels excavated tracing small channels and/or small ditches which had existed just before channel migration.