Theoretical Analysis on The Wave Height of Alternating Bars

A theoretical analysis was performed on the wave heights of alternating bars in alluvial channels. In the preceding analyses, the bed form had been assumed using a major component. These analyses were not so successful because the non-linear effects of the residual components of the bed form does not introduced.The authors expressed the form of the alternating bars by the two components, and the order of amplitude of the two components were assumed to be the same. The analysis was performed up to the 2nd order of the amplitude. The results of the analysis were compared with flume data. It was found that the wave heights of the alternating bars agreed well with the observations.