Journal cover Journal topic
Proceedings of the International Association of Hydrological Sciences An open-access publication for refereed proceedings in hydrology
Journal topic

Journal metrics

CiteScore value: 0.9
CiteScore
0.9
SNIP value: 0.504
SNIP0.504
IPP value: 0.81
IPP0.81
SJR value: 0.296
SJR0.296
Scimago H <br class='widget-line-break'>index value: 11
Scimago H
index
11
h5-index value: 19
h5-index19
Volume 367
Proc. IAHS, 367, 357–365, 2015
https://doi.org/10.5194/piahs-367-357-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Proc. IAHS, 367, 357–365, 2015
https://doi.org/10.5194/piahs-367-357-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

  03 Mar 2015

03 Mar 2015

A combined model of sediment production, supply and transport

M. Fujita1, K. Yamanoi2, and H. Izumiyama3 M. Fujita et al.
  • 1Disaster Prevention Research Institute, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan
  • 2Graduate School of Engineering, Kyoto University, Kyoto daigaku-katsura, Nishikyo-ku, Kyoto, 615-8530, Japan
  • 3Public Works Research Institute, 1-6 Minamihara, Tsukuba-shi, Ibaraki, 305-8516, Japan

Keywords: Sediment production, sediment supply, sediment transport, freeze-thaw action

Abstract. In previous sediment-runoff models, the sediment production rates of mountain slopes, and the sediment supply rates to streams typically have been developed using empirical methods. A process-based model for sediment production and supply is, however, required for more exact simulations of sediment runoff. In this study, we develop a method to calculate the sediment production rate due to both freeze-thaw action and the sediment supply rate (i.e. erosion rate of talus). These numerical models were then connected to an existing sediment transport model. The integrated model presented here was applied to a small mountainous watershed. We found that the calculated sediment production rate was within the range of values typically observed for this region. Additionally, the estimated annual sediment discharge using the model agreed with observational results. Lastly, we found that the model can be used to qualitatively characterize typical features of the actual sediment routine in mountainous watersheds.

Publications Copernicus
Download
Citation