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中文摘要：
2011年10月在渤海海峡北部利用自由沉降式湍流细微结构剖面仪TurboMAP-9进行现场观测,通过对海洋湍流微结构剖面观测资料进行分析,研究了渤海海峡北部非层化期湍流混合特征。结果表明,非层化期海峡北部为强混合区域,大多数湍混合率和热扩散系数在10-4～10-2量级,近底层的湍混合率较大,最大超过10-1m2/s。热扩散系数大于湍混合率,并且二者在海峡附近的值大于其在附近渤海和黄海海域的值。观测区域内湍混合率和热扩散系数的平均值分别为3.59×10-2 m2/s和8.19×10-2 m2/s。
英文摘要：
The measurements of ocean microstructure through the ocean internal mixing mechanism are carried out often.In Oct.2011,a free-falling turbulence microstructure profiler TurboMAP-9 is used to take a field observation on the area in northern Bohai Strait.The turbulent mixing characteristics in northern Bohai Strait during non-stratification season are described by analyzing the observation data of ocean turbulence microstructure profile.The results show that the northern Bohai Strait is a strong mixing area during non-stratification period.Most of the turbulent mixing rate and thermal diffusivity coefficient distribute in the range of 10-4~10-2.The turbulent dissipation rate near bottom is large and exceeds 10-1 m2/s,and the maximum heat dissipation rate reach 10-3 ℃2/s.Thermal diffusivity coefficient is larger than turbulent mixing rate.In addition,both of values near Strait are larger than in Bohai Sea and Yellow Sea.The average values of turbulent mixing rate and thermal diffusivity coefficient are 3.59×10-2 m2/s and 8.19×10-2 m2/s,respectively,for these limited data.
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