【摘要】 长江河口存在着涨落潮流速和历时的不对称现象。本应用长江河口三维数值模式,数值试验定量给出了不同径流量、潮汐和水深下南北支、南北港和南北槽涨潮落潮平均流速和历时,通过横断面涨潮落潮通量必须满足质量守恒观点从动力机制上给出了涨潮落潮流速和历时不对称的成因。更多还原

【Abstract】 There exists the asymmetry of current speed and duration between flood and ebb in the Changjiang Estuary.Applied the three-dimension numerical model in the Changjiang Estuary,the mean flood/ebb current speed and duration in the South/North Branch,South/North Channel and South/North Passage under different river discharges,tide and water depth were given out quantitatively by the numerical experiments.The dynamic causes of the asymmetry of flood/ebb current speed and duration are explained in the view of mass conservation by the water flux through the transect during flood and ebb period.更多还原