Analysis of Current at a Continuous Observation Station in the Shallow Water of the Northern Outer Shelf of the East China Sea

Abstract In this paper, multi-layer current data continuously observed in November 2021 was studied by statistical analysis, spectral and harmonic analysis the shallow water area of northern outer shelf East China Sea. The results showed that: during observation, average velocity 30.5cm/s, maximum 78.1cm/s. from 30cm/s to 40cm/s accounts for largest proportion, direction frequency eastward, up 12.4%. stationary flow is northward changes northeast northwest with increase depth. a regular semi-diurnal current, ellipse rotates clockwise. major axis M2 tidal ranges 12.9cm/s 37.7cm/s, firstly increases, then keeps constant, finally decreases This study fills blank autumn hydrodynamic can provide reference studying hydrodynamics Kuroshio affected area.