Construction of fundamental experimental device for surface ocean waves at high school education and salinity dependence of ripple marks

Ryo Nakamura, GeoScience teacher, Rifu, Japan; Miyagi Rifu high school, Geoscience, Rifu Town, Miyagi, Japan and Rikuto Utsumi, Miyagi Rifu high school, 11th grade student, Rifu, Miygai, Japan