Responses of bed load yields from a forested headwater catchment in the eastern Tanzawa Mountains, Japan

• DOI: 10.3178/hrl.9.41
• Publication Date: 2015-08-25T22:04:02Z
• Authors: Marino Hiraoka; Takashi Gomi; Tomoki Oda; Tomohiro Egusa; Yoshimi Uchiyama
• Keywords: Weir

We investigated bed load yields from a headwater catchment (7.0 ha) in the eastern Tanzawa Mountains Kanagawa Prefecture, Japan 2009–2014 using measurements weir pond catchment. Precipitation and stream discharge were continuously monitored at 10-min intervals. The mean (± standard deviation) volume of transported was 0.019 ± 0.040 m3/ha/day (0.023 0.049 t/ha/day by yield) zero events observed during monitoring period. particle size sediment tended to be small compared that bed. Bed summer–autumn 5.7-fold those winter–spring. A significant correlation detected between yield peak (p < 0.05). Variations availability induced discontinuous transport major precipitation events. These intermittent responses associated with available capacity channel. Our findings help for clarifying flux channel based on its potential storage yields.