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根据2007年7月23～28日厦门—泉州近岸海域表层温、盐度31个密集断面走航观测结果,结合同期卫星遥感海表温度(SST)数据和潮汐资料,分析该海域表层温、盐度的分布,并采用非等间隔数据的谱分析方法研究温、盐度的变化特征。结果表明:①九龙江冲淡水的影响可延伸到围头、深沪近岸海域,表现为明显的表层盐度锋存在;但晋江冲淡水对调查海域的影响较弱。②在该调查海域,潮汐对表层温、盐度的分布和变化有一定的影响,靠近厦门湾口一端的围头、深沪附近海域尤为突出。谱分析结果显示,该段的盐度变化与潮汐涨落在周期上比较一致。③调查期间,表层温度变化呈逐渐升高的趋势,而且具有明显的周日变化特征。④围头近岸表层存在一个低温高盐水区域,且位置随潮汐有所变动。
According to the observed observations of the surface temperature and salinity of 31 dense sections in Xiamen-Quanzhou coastal waters from July 23 to July 27, 2007, combining with SST data and tidal data of the same period, the surface temperature, Salinity distribution, and non-equidistant data spectral analysis of temperature and salinity characteristics of the change. The results showed that: ①The influence of fresh water from the Jiulongjiang River extended to the headwaters and the coastal areas of Shenzhen and Hupeh, showing obvious surface salinity front; however, the influence of Jinjiang red water on the surveyed sea area was weak. In the survey area, the tides have a certain impact on the distribution and changes of surface temperature and salinity, and are close to the fence head at the end of the Xiamen Bayou. The waters near Shenzhen and Shanghai are particularly prominent. The results of spectral analysis showed that the variation of salinity and tidal fluctuation in this section are consistent in the cycle. ③ During the survey period, the surface temperature showed a gradual upward trend, with obvious characteristics of the sun. ④ There is a zone of low temperature and high salinity in the surface of the nearshore headland, and the location changes with the tide.