Japan Geoscience Union Meeting 2016

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Symbol A (Atmospheric and Hydrospheric Sciences) » A-HW Hydrology & Water Environment

[A-HW16] Water and material transport and cycles in catchment ecosystems: from headwater to coastal area

Thu. May 26, 2016 9:00 AM - 10:30 AM 302 (3F)

Convener:*Seiko Yoshikawa(Narional Institute for Agro-Environmental Sciences), Masahiro Kobayashi(Forestry and Forest Products Research Institute), Noboru Okuda(Research Institute for Humanity and Nature), Shin-ichi Onodera(Graduate School of Integrated and Arts Sciences, Hiroshima University), Kazuhisa Chikita(Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University), Tomohisa Irino(Faculty of Environmental Earth Science, Hokkaido University), Shinji Nakaya(Department of Water Environment and Civil Engineering, Faculty of Engineering, Shinshu University), Mitsuyo Saito(Graduate School of Environmental and Life Science, Okayama University), Chair:Shin-ichi Onodera(Graduate School of Integrated and Arts Sciences, Hiroshima University), Mitsuyo Saito(Graduate School of Environmental and Life Science, Okayama University)

9:30 AM - 9:45 AM

[AHW16-03] Relationship between sediment production and beach formation in Japan

*Keiko Udo1, Yuriko Takeda1, Kohki Morita1, Yoshiyuki Yokoo2 (1.International Research Institute of Disaster Science, Tohoku University, 2.Faculty of Symbiotic Systems Science, Fukushima University)

Keywords:Precipitation intensity, Sediment transport, Beach erosion

Beach is an important space for disaster reduction, nearshore ecosystems, and leisure activities. However, interception of sediment transport due to rapid development of infrastructures caused beach erosion throughout Japan after 1950s. This study compares the sediment production with the beach width and its change after 1950s, and analyzes the effect of those development.