Analysis of Hydrodynamic Characteristics During Flood and Dry Seasons in the Huangmaohai Sea Based on Buoy Station

DOI

10.2991/978-94-6463-902-5_20How to use a DOI?

Keywords

Huangmaohai; runoff-tide dynamics; residual current; buoy station; flood and dry seasons

Abstract

To investigate recent tidal dynamics in the Huangmaohai waters, this study analyzed spatio-temporal hydrodynamic characteristics using principal tidal flux cross-section algorithms based on 15-day buoy observation data during flood and dry seasons. The flood and ebb currents in the Huangmaohai estuary primarily followed NNW and SSE directions, with net southward transport toward the outer sea, where Stokes drift exerted an inhibitory effect. During the wet season, flood discharge mainly flowed southeastward in the upper 0-0.5 water depth layer, while surface residual currents moved westward. In the dry season, residual flow velocities decreased, with surface currents reversing eastward. Vertical velocity shear peaked at the surface, dominated by wind stress, whereas maximum bed-layer shear occurred during slack tides (ebb-to-flood transition), particularly enhanced by flood discharge. Linear regression effectively quantified correlations between tidal-averaged velocity/residual flow and key forcing factors. Tidal forcing dominated the estuary’s reciprocating flow, with stronger influence during wet seasons and ebb phases. River discharge primarily followed tidal motion, while residual flow remained river-dominated except for wind-driven surface residuals. Bed erosion/deposition was chiefly controlled by tidal dynamics, with suspended sediment largely depositing near the buoy station over the 15-day period.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Shenguang Fang
AU  - Junli Wang
PY  - 2025
DA  - 2025/12/16
TI  - Analysis of Hydrodynamic Characteristics During Flood and Dry Seasons in the Huangmaohai Sea Based on Buoy Station
BT  - Proceedings of the 2025 7th International Conference on Civil Engineering, Environment Resources and Energy Materials (CCESEM 2025)
PB  - Atlantis Press
SP  - 207
EP  - 223
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-902-5_20
DO  - 10.2991/978-94-6463-902-5_20
ID  - Fang2025
ER  -