砂漣に関する実験的研究(第1報)

Abstract

It is one of the most important problems in hydraulic engineers to solve the mechanismof sand waves. Because sand waves occur at almost time when the bed materials move by runn-ing water and they give various difficult problems. We know the existence of various bedconfigurations, ripples, dunes, stationary waves, antidunes and etc.. But we cannot fullyexplain these complex phenomena at present.Authors started a series of studies from the standpoint of thinking these phenomena asone of the stochastic process.As the first step of these studies, authors have manufactured a equipment measuringwater level and bed elevation suing ultra-sonic device with sufficient accuracy. And theyhave discussed the significance of the mean values of the period, wave-length, wave-height andetc. as the characteristic values of the sand waves.