Observation and analysis of tidal and residual current in the North Yellow Sea in the spring

International Conference on Energy Engineering and Environmental Protection 2017

能源学;生态环境科学

Miao, Qingsheng^1 ; Yang, Jinkun^1 ; Yang, Yang^1 ; Wan, Fangfang^1 ; Yu, Jia^1

National Marine Data and Information Service, Tianjin

300171, China^1

关键词: Acoustic Doppler Current Profilers;    Baroclinic;    Current characteristic;    Eddy kinetic energy;    Residual current;    Shallow waters;    Tidal currents;    Total energy;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/121/5/052040/pdf
DOI  :  10.1088/1755-1315/121/5/052040

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In order to study the current characteristics of the North Yellow Sea (NYS), 4 moored ADCPs (Acoustic Doppler Current Profilers) were deployed and Current characteristics were analyzed based on the observations. Results show that tidal current is the dominant and M2 is the main constituent. Shallow water constituents are obvious in the near-shore area, and tidal current ellipses directions have relations with topography. Residual currents in the Bohai Strait point to the Bohai Sea interior and the magnitude have a connection with terrain. Residual current in south NYS can be divided into two layers, and energy of residual current only accounts for about 13% of the total energy. Barotropic eddy kinetic energy plays a major role and the average in NYS accounts for 87%, baroclinic mean kinetic energy is larger in north NYS, in other regions barotropic mean kinetic energy take the leading position.