摘要
利用二维水体和物质长期输运速度及其机制分解形式,分析了长江口1997年洪季观测资料,从实践上认识悬沙、盐度和水体长期输运的分离程度。观测站资料的计算分析表明:最大浑浊带附近,二维悬沙和水体长期输运速度平均夹角为36.0°、速度量值平均相差29.9%,悬沙和水体长期输运具有明显的分离特征;盐度锋面附近,二维盐度和水体长期输运速度的平均夹角为43.6°、速度大小平均相差27.8%,盐度和水体长期输运具有明显的分离特征。
With 2-D water and substance＇s long-term transport velocities and their decomposed items, the observation data is analyzed on 1997 flood season in the Changjiang Estuary to give the separation character of suspended sediment, salinity and water＇s long-term transport. In the turbidity maximum, the average value of the angle between 2-D suspended sediment＇s long-term transport velocity and 2-D water＇s longterm transport velocity is 36.0°, and the average discrepant value of their speeds is 29.9°, so there is obvious separation character of suspended sediment and water＇s long-term transport. In the salinity front,the average value of the angle between 2-D salinity＇s long-term transport velocity and 2-D water＇s longterm transport velocity is 43.6°, and the average discrepant value of their speeds is 27.8%, so there is also obvious separation character of salinity and water＇s long-term transport.
出处
《海洋学报》
CAS
CSCD
北大核心
2009年第4期22-28,共7页
基金
中国博士后科学基金(20080431065)
国家自然科学基金(40306014)
近海海洋综合调查与评价专项(908-02-01-04)
关键词
长江口
悬沙长期输运
盐度长期输运
水体长期输运
分离研究
the Changjiang Estuary
suspended sediment＇s long-term transport
salinity＇s long-term trans-port
water＇s long-term transport
separation study
