九龙江口和厦门西港的盐度低频变化特征

Analyses of low-frequency fluctuation characteristics of salinity in Jiulong River Mouth and western Xiamen Harbour

本文根据厦门海洋站长序列盐度观测结果,分析九龙江口和厦门西港各种时间尺度的盐度低频波动特征,并探讨其机制。结果表明,九龙江径流量是影响厦门盐度的主要因素,但不是唯一因素。在亚潮频段,盐度对径流的响应可能有相当强的非线性。

Based on the observed long time series of surface salinity at Xiamen Oceanic Station,thecharacteristics of low-frequency fluctuation in various time scales in Jiulong River Mouth andthe western Xiamen Hrbour are analysed,and their mechanism is explored.The results showthat the discharge from Jiulong River is the major,but not unique,element influencing thesalinity.It is likely that in the subtidal rigime response of salinity to river discharge isstrongly nonlinear.