Century-scale shoreline changes of five beaches in JAPAN

Jun Yoshida, Keiko Udo, Yuriko Takeda, Akira Mano

    Research output: Chapter in Book/Report/Conference proceedingConference contribution


    Coastal erosion caused by sea level rise is a serious problem for people all over the world. Global sea level will rise from 0.18 to 0.59 m (IPCC, 2007). Along the coasts in Japan, sea level will rise from 0.09 to 0.27 m by the end of this century. The future estimation considers only thermal expansion due to rising sea temperature caused by global warming. However, considering the contribution of scale-down of Greenland and Antarctic ice sheet, there is potential of the increase in the rate of sea level rise. There are few studies which evaluate impacts of the future beach erosion on society by comparing with the past shoreline change resulting from natural forces and human activities. This study evaluates the long-term shoreline changes due to natural forces and human activities by using old maps. Shoreline changes were influenced by natural forces from 1900 to 1950 and were influenced by human activities from 1950 to 1990. Shoreline changes showed that the changes tended to be stable after 1990, and coastal erosion due to climate change would likely become obvious in the future.

    Original languageEnglish
    Title of host publicationProceedings of the 33rd International Conference on Coastal Engineering 2012, ICCE 2012
    PublisherAmerican Society of Civil Engineers (ASCE)
    ISBN (Print)9780989661119
    Publication statusPublished - 2012
    Event33rd International Conference on Coastal Engineering 2012, ICCE 2012 - Santander, Spain
    Duration: 2012 Jul 12012 Jul 6

    Publication series

    NameProceedings of the Coastal Engineering Conference
    ISSN (Print)0161-3782


    Other33rd International Conference on Coastal Engineering 2012, ICCE 2012


    • Beach erosion
    • Old map
    • Shoreline change

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Ocean Engineering
    • Oceanography


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