Connectivity between sediment storage in dam reservoir and coastal erosion: Implications through zonal mappings of monitoring data

Yoshiyuki Yokoo, Keiko Udo

    Research output: Contribution to journalConference articlepeer-review

    3 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)725-729
    Number of pages5
    JournalJournal of Coastal Research
    Volume1
    Issue number75
    DOIs
    Publication statusPublished - 2016 Mar 1
    Event14th International Coastal Symposium, ICS 2016 - Sydney, Australia
    Duration: 2016 Mar 62016 Mar 11

    Keywords

    • Sediment inflow
    • Shoreline change
    • Turbidity

    ASJC Scopus subject areas

    • Ecology
    • Water Science and Technology
    • Earth-Surface Processes

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