In the present study, we investigated the relationship between sediment storage in dam reservoirs and coastal erosion covering 71 coastal zones in Japan. Consequently, we found a weak but significant positive correlation between sediment storage in dam reservoirs and coastal erosion. The weakness of the correlation here indicates that sediment storage in dam reservoirs is not the primary cause of coastal erosion. In addition, we developed a simple methodology for estimating sediment inflow into a dam reservoir based on hourly turbidity and water inflow measures for the selected Miharu dam reservoir. Using this estimation, we explored the current relationship with precipitation intensity and this relationship can be used for climate change impact and adaptation studies. Our provisional investigation into the Miharu dam watershed showed that the hysteresis effect in the relationship is negligible, although further studies are necessary to validate our claim.
|Number of pages||5|
|Journal||Journal of Coastal Research|
|Publication status||Published - 2016 Mar 1|
|Event||14th International Coastal Symposium, ICS 2016 - Sydney, Australia|
Duration: 2016 Mar 6 → 2016 Mar 11
- Sediment inflow
- Shoreline change