水道港口2024，Vol.45Issue(2)：165-173,9.
基于指数收敛的喇叭形河口河宽公式研究及应用
Research and application of river width formula in exponential convergent funnel-shaped estuaries
摘要
Abstract
Based on satellite remote sensing images,the river widths along six funnel-shaped estuaries in China were extracted,and the convergence formula proposed by Lanzoni and Seminara in 1998 was used for fitting.It was found that the fitted estuary shapes deviated significantly from the actual ones.In order to improve accuracy,two new formulas concerning the ratio of mouth width to upstream width and water area were proposed by optimizing the parameters of the formula.Results show that for the 6 funnel-shaped estuaries in China,the two new proposed formulas have better R-squares compared with Lanzoni and Seminara's formula.Furthermore,the convergence error is used as an identification index for the funnel-shaped estuaries and the funnel-shape parameter is proposed to represent the convergence of the estuaries.In order to check the applicability of the two convergence formulas in models,the hydrodynamic simulation based on the Jiaojiang Estuary as a prototype using three fomulas were conducted,suggesting that the hydrodynamic characteristics for the newly proposed formula models are closer to the actual estuaries.关键词
喇叭形河口/河宽/水动力模拟/收敛误差/喇叭形态参数Key words
funnel-shaped estuary/river width/hydrodynamic simulation/convergence error/funnel-shape parameter分类
交通工程引用本文复制引用
郭泽旸,陶建峰..基于指数收敛的喇叭形河口河宽公式研究及应用[J].水道港口,2024,45(2):165-173,9.基金项目
国家自然科学基金项目(52071129) （52071129）
