A vortex of sand is often observed in the shallow sea along beach. By producing waves having various periods in the water tank of the hydraulic laboratory, the authors have taken photographs of the motion of sand particles forced by waves and discussed the mechanism to produce the sand vortex.
The length of the manuscripts should not exceed 18,000 words for an Article and 4,500 words for Notes and Correspondence (approximately 60 and 15 double-spaced pages formatted using the JMSJ Word template, respectively). The manuscript should be double spaced in 12 point type, and all pages and lines must be numbered consecutively. The word limit does not include the title page, abstract, acknowledgements, references, tables, or figure captions.
