Quasi-harmonic Analysis of Tidal Current Data Collected from Six Anchored Stations in Haiyang Sea Area
TIAN Zheng
QIU Wenbo
HU Yiqun
XU Junchen
LI Guanyu
Abstract：Using the quasi-tidal current method and short-term data, the surface, middle and bottom tidal current data obtained from 6 tidal current observation stations near Haiyang Nuclear Power Station at a depth of 4.5～22.5 m were analyzed.The results show that the area is dominated by semi-diurnal tide, and the M2 amplitude is larger than S2 in semi-diurnal tide.The diurnal tide is only found in individual aquifers of individual stations.The tidal current in the survey area belongs to the normal semi-diurnal tide.However, the ratio of WM4/WM2 is greater than 0.04, indicating that the shallow sub-tidal current has a large proportion.Therefore, the tidal current property should be of the features of irregular half-day shallow tidal current type.Each station shows different tidal flow patterns, and the swirling flow exists at the same time.The obvious differences between stations and levels need to be studied in combination with the detailed topographic survey.The residual flow velocity of most stations shows surface＞ middle＞ bottom and presents from northeast to southwest generally.
Keywords：tidal currentquasi-harmonic analysistidal ellipseresidual currentHaiyang nuclear plant
Publication Date：2018-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：5( 31-35 )