抄録
This paper discusses how to improve the existing one-dimensional river meandering model. In the existing model, the main stream shift was simply assumed to trigger the side bank erosion. On the other hand, in the new model, the influence of the intensity of secondary flow is considered in addition to that. First, the weight of effects of the two factors is determined by calculating the infinitesimal wave length, and comparing that with the data of the length of alternating bars in actual river channels. After that, the calculation in finite amplitude meandering is conducted, and compared with the satellite image analysis data of natural rivers collected from Google Earth. The simulation result basically agreed with the image data in the values of wave length and shape of meandering.
