Current observations in the southern Yellow Sea in summer  

作　　者：唐晓晖 王凡 陈永利 白虹 胡敦欣 

机构地区：[1]Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China Graduate School of the Chinese Academy of Sciences, Beijing 100039, China [2]Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China

出　　处：《Chinese Journal of Oceanology and Limnology》2004年第3期217-223,共7页中国海洋湖沼学报（英文版）

基　　金：ContributionNo.4608fromtheInstituteofOceanology,ChineseAcademyofSciences,Qingdao,ChinaSupportedbytheNationalBasicResearchProgramofChina(No.G1999043803).

摘　　要：Current data from three moored Acoustic Doppler Profilers (ADPs) deployed in the southern Yellow Sea at sites A (1-24.17°E, 34.82°N), B (122.82°E, 35.65°N) in summer 2001 and site C (120.85°E, 34.99°N) in summer 2003 were analyzed in this paper. Features of the tidal and residual currents were studied with rotary spectral and cross-spectral methods. Main achievements were as follows: 1) Tides dominated the currents. At sites A and B, the semidiurnal tidal current was basically homogeneous in the whole depth, taking a clockwise rotation at site A, and near-rectilinear counterclockwise rotation at site B; while the diurnal tidal current was strong and clockwise near the surface, but decreased and turned counterclockwise with depth; at site C, semidiurnal tidal current dominated and diurnal current took the second, both of which were counterclockwise and vertically homogeneous. Inertial motion contributed to the clockwise component of diurnal fluctuations; 2) The 3-5d fluctuation of residual current was found at site C and attributed to the response of current to meridional wind, with a lag time of approximately 1.8d; 3) Mean residual flows at sites A and B in 2001 probably suggested an anticyclonic inner circulation in the middle of the southern Yellow Sea in summer.Current data from three moored Acoustic Doppler Profilers (ADPs) deployed in the southern Yellow Sea at sites A (124.17 °E, 34.82 °N), B (122.82 °E, 35.65 °N) in summer 2001 and site C (120.85 °E,34.99 °N) in summer 2003 were analyzed in this paper. Features of the tidal and residual currents were studied with rotary spectral and cross-spectral methods. Main achievements were as follows: 1) Tides dominated the currents. At sites A and B, the semidiurnal tidal current was basically homogeneous in the whole depth, taking a clockwise rotation at site A, and near-rectilinear counterclockwise rotation at site B; while the diurnal tidal current was strong and clockwise near the surface, but decreased and turned counterclockwise with depth; at site C, semidiumal tidal current dominated and diurnal current took the second, both of which were counterclockwise and vertically homogeneous. Inertial motion contributed to the clockwise component of diurnal fluctuations; 2)The 3-5d fluctuation of residual current was found at site C and attributed to the response of current to meridional wind, with a lag time of approximately 1.8d; 3) Mean residual flows at sites A and B in 2001 probably suggested an anticyclonic inner circulation in the middle of the southern Yellow Sea in summer.

关 键 词：current observation the southern Yellow Sea Acoustic Doppler Profiler spectral analysis tidal current residual current 

分 类 号：P714[天文地球—海洋科学]