摘要
依据实测资料，分析了伶汀洋冬、夏季的水温分布特征及其变化。冬季湾内水温的分布和变化较单一，夏季由于河流入海流量增大，河流与海洋水体的相互作用加强，明显可见两个冷、暖水锋在河口湾中段相交，上段为高温的河流淡水控制区，下段为低温的陆架水控制区，两者显著的特点是其控制区内温度变化很小，而在锋面转折地带的河口湾中段，盐淡水混合强烈，其温度变化大，温度等值线呈倾斜分布。
his paper analyses the distribution characteristics and variations of water temperature in summer and winter in Lingdingyang estuary. The temperature distribution and variation in winter was relatively monotonous. In summer the interaction between river fresh water and sea water was intense due to increase of the amount of discharged river water into the estuary. It was evident that two fronts,a cold and a warm water front interlaced in the middle of the estuary. The upper one was dominated by river fresh water of high temperature (mean above 30℃, max 31 ℃),and the lower one by shelf water of low temperature (mean below 25℃,min 23.3℃).The obvious characteristic in both was that water property was relatively stable. The middle section of the estuary was the transition zone for mixing of the fresh and shelf water, in which temperature variation was relatively large and distribution of the isotherm was Inclined. The mixed water consisted of fresh and shelf water which had a temperature between river and shelf water,flowed diffusely on top of the shelf water, and its vertical temperature gradient was generally consistent seaward, so that distribution of the isotherm was lamelliform.
出处
《热带海洋》
CSCD
1994年第1期76-80,共5页
基金
国家自然科学基金
关键词
伶仃洋
水温
陆架水
温度
分布
Lingdingyang estuary
water temperature
river runoff
shelf water
