Japan Geoscience Union Meeting 2016

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Poster

Symbol O (Public) » Public

[O-02] Poster presentations by senior high school students

Sun. May 22, 2016 1:45 PM - 3:15 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Tatsuhiko Hara(International Institute of Seismology and Earthquake Engineering, Building Research Institute), Miwa Kuri(International Research Institute of Disaster Science, Tohoku University), Keiko Konya(Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology), Hajime Naruse(Department of Geology and Mineralogy, Graduate School of Science, Kyoto University), Kou Yamada(Waseda University)

1:45 PM - 3:15 PM

[O02-P56] The Costal Erosion at Omorihama Coast, Hakodate,Hokkaido.

*Ami Hanada1, Yui Okada1 (1.Iai Girls' Senior High School)

Keywords:The coastal erosion

Our club have measured land height above the sea level and observed coastal erosion at Omorihama coast Hakodate city since 2006. At the west part of the coast, the sandy beach was badly eroded in 2010 and 2011durnig winter season. A sign board which was put up on the sand was felt down in March 2011 because it had lost foundation sand by Tsunami and windstorm. After that a wave carried sediments on a sign board in summer season and it was buried under the beach. .In 2015, it appeared again on the beach because the sand was eroded by a storm surge caused by a bomb cyclone. It is considered that high tide level and strong longshore current cause serious erosion on the beach.