【摘要】 以河口区下泻水流速度为变量,建立了非线性动态模型,根据其动力学行为分析了河口形态的成因,给出了河口分段的动力学指标。以过水断面上的径流量和潮流量为变量建立了径流与潮流相互作用的非线性模型,通过求解平衡态及其稳定性分析,揭示了河口段水情变化的内在规律,模型分析结果与实际观测结果基本一致,但更深刻地揭示了水情变化与参数数量变化之间的密切联系,同时揭示了河、海动力作用之间的协同共存状态。更多还原

【Abstract】 We choose the velocity of water release as the variable to build a nonlinear dynamic model, analyze contributing factors of estuary pattern according to dynamical behavior, and give dynamical indexes to divide the stretch of estuary region. Because the interaction between runoff and tidal current controls the hydrological features of estuary, we choose runoff discharge and tidal current discharge of profile as variables to build a nonlinear model of interaction to character the inherent laws of regimen change of estuary through solution of equilibrium state and analysis of stability . The result of model analysis is basically identical with practical observations. Besides, the theoretical result reveals the close relationship between inherent laws of regimen change of estuary and model parameter as well as the coexisting state between river motive force and that of ocean.更多还原