Two-Dimensional Numerical Simulation of Tide and Tidal Current of Eight Major Tidal Constituents in the Bohai, Yellow, and East China Seas

Abstract

Numerical simulations of the eight major tidal constituents (M2, S2, K1, O1, N2, K2, P1, and Q1) in the Bohai, Yellow and East China Seas (BYES) were conducted using the Regional Ocean Modeling System (ROMS) based on altimeter products from X-TRACK. Tidal harmonic constants and two-dimensional tidal current data with a spatial resolution of 1/12° were obtained. To validate the simulation results (SRs), harmonic constants from altimeters and tide gauges, two sea level anomaly time series, and velocity observations from 12 current meters were utilized. Additionally, data from five tidal models were used for comparison. The validation and comparison results demonstrated the accuracy of SR, especially when compared with coastal tide gauge data where SR performs exceptionally well. The cotidal charts and tidal current ellipses obtained through SR exhibited good continuity and consistency with the previous studies, effectively reflecting the tidal characteristics of the BYES. The SR can serve as a valuable reference and support for tidal-related fields in the BYES, including the supplement and verification of ocean measurements and the calculation of reference planes for ocean engineering.

Effects of stepwise tidal flat reclamation on tidal evolution in the East China and Yellow Sea

“…Calculated mean absolute errors (MAEs) of the 4major constituents between 17 tide gauges and simulation results are also listed in table 1. Compared to recent assimilation models (EOT20, FES2014, NAO.99Jb), the MAEs of 0 m run is about twice, but our simulate results are not bad compared to other models (FES2012, TPX08, HAMTIDE 11a, DTU10, EOT11a) (Lee et al 2022, Liu et al 2023. Therefore, it can be considered that simulation error of MOHID model does not have a significant effect on various reclamation experiments.…”

“…Therefore, it can be considered that simulation error of MOHID model does not have a significant effect on various reclamation experiments. It is also expected that follow-up studies will be able to improve the model's performance by applying spatially varying bottom friction coefficients and using other assimilation products (EOT20, FES2014) as a boundary data (Qian et al 2021, Liu et al 2023.…”

Prediction of hydrological and water quality data based on granular-ball rough set and k-nearest neighbor analysis

“…Not only the problem of freshwater water blooms is serious, but also the algae blooms in the main coastal waters (often referred to as red tides) can not be ignored. Red tides have been reported in the main coastal waters of China, such as the Bohai Sea [23,24], the Yellow Sea [25,26], the East China Sea [27][28][29], the Taiwan Strait [30,31], and the South China Sea [32][33][34].…”