How ripples formation dependence on the size of sand grains and the amplitude of vibration cycle

Tsuyoshi Enta; Ryutaro Mitsui

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O (Public ) » Public

[O-03] Poster presentations by senior high school students

Sun. May 26, 2019 1:45 PM - 3:15 PM Poster Hall (International Exhibition Hall8, Makuhari Messe)

convener:Tatsuhiko Hara(International Institute of Seismology and Earthquake Engineering, Building Research Institute), Katsuyoshi Michibayashi(Department of Earth and Planetary Sciences, Nagoya University), Miwa Kuri(International Research Institute of Disaster Science, Tohoku University), Kou Yamada(Waseda University)

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1:45 PM - 3:15 PM

[O03-P26] How ripples formation dependence on the size of sand grains and the amplitude of vibration cycle

*Tsuyoshi Enta¹, *Ryutaro Mitsui¹ (1.Kaijo Senior High School)

Keywords:Ripple mark, Wave ripples , Sedimentology

How wave ripples can be formed? Using a plastic bottle which contains water and sand grains sorted by its size. We examined conditions by which wave ripples can be formed. We made a vibration apparatus using Lego Mindstorms to vibrate the plastic bottles horizontally and to control the amplitude and the period of the vibration. We count the number of tops of wave ripples each case and considered results.