Abstract：It is one of the challenges in fluvial sedimentology to analyze the quantitative genesis of the lateral accretionary body of composite point bar. By selecting lidar data from the lower reaches of the Mississippi River,the internal characteristics of the lateral accretion of the composite point bar and the elevation data of the lateral accretion are analyzed,showing the characteristics of periodic changes. The Fourier transform calculation of the elevation data is used to obtain the lateral accumulation period of the compound point bar,which is highly fitted to the scale of the river channel. It implies that the lateral accumulation cycle is controlled by the seasonal flooding cycle of the river. The results provide a theoretical basis for quantitative genesis analysis of lateral accretionary body.
Fan Hong-Jun,Wang Xia-Bin,Hu Guang-Yi et al. Analysis of formation of lateral accretionary period of composite point bar: taking the lower reaches of Mississippi River as an example[J]. JOPC, 2021, 23(2): 421-434.
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