DOI: 10.5281/zenodo.7079490
title: DATASET_JGR_field investigation & idealized model results

description: <strong>This dataset supplements the article: Li, H., Yang, Q., Mo, S., Huang, J., Wang, S., Xie, R., Luo, X., Liu, F., Formation of turbidity maximum in the Modaomen Estuary of the Pearl River, China: the roles of mouth bar, submitted to the Journal of Geophysical Research: Oceans (2022JC018766)</strong> Contact information: Dr. Liu, F., School of Ocean Engineering and Technology, Sun Yat-sen University, Guangzhou, 510275, China. Email: liuf53@mail.sysu.edu.cn (Liu, Feng) <strong><em>Brief view of Dataset</em></strong> <strong>1. Field investigation</strong> Hydrodynamics, suspended sediment concentration, and sediment particle size distribution were measured via four cruises shipboard in the mouth bar zone of the ME during the dry season of 2020. Eighteen gauging stations covering the mouth bar zone of the ME were observed during both the neap tide (26 October 2020) and spring tide (1 November 2020). The data from gauging stations #16, #17, and #18 during ebb and ebb-flood periods during the neap tide were the same. This directory contains the following datasets. <strong>-data_current_velocity.xlsx:</strong> station number, time, longitudinal, latitude, x, y, depth observed from ADCP, depth of the last characteristic layer in the water column (depth_last_cell, m), depth of the first characteristic layer in the water column (depth_first_cell, m), and current velocity (cm/s) and direction (°) of six characteristic layers during spring and neap tides. <strong>-data_salinity_turbidity_SSC.xlsx:</strong> station number, time, longitudinal, latitude, x, y, depth observed from ADCP, depth observed from OBS (depth_OBS_H), turbidity (ntu), salinity (psu), and suspended sediment concentration (SSC, mg/L) during spring and neap tides. <strong>-data_particle_size_distribution.xlsx:</strong> station number, mean size (μm), suspended sediment size distribution of three characteristic layers, and bed sediment size distribution during spring and neap tides. <strong>-data_river_discharge&water_level.xlsx:</strong> Hydrological conditions during investigation period during both neap and spring tides, i.e., river discharge at Makou station and tidal level at Sanzao station. <strong>2. Idealized model results</strong> Model settings and results of the idealized estuaries. The <strong>'Grid_idealized_estuary.grd'</strong> and <strong>'Grid_Enc_idealized_estuary.enc'</strong> are essential grid files for Delft3D-FLOW model. The scenarios with mouth bar and without mouth bar share the same grid file. 32 sites are set up in the central longitudinal section of the models to monitor the aggregate parameters in the longitudinal section near the outlet. The results of aggregate parameters are as follows. (1) Idealized estuary with a mouth bar: The formats of the result files are<strong> 'mouthbar_XX_MDM(Site No.).mat'</strong>. The 'XX' consists of bed level, salinity, bed shear stress, sedimentcoh1 (i.e., cohesive suspended sediment concentration), and vertical and horizontal velocities. (2) Idealized estuary without mouth bar: The formats of the result files are <strong>'nobar_XX_MDM(Site No.).mat'</strong>. The 'XX' consists of bed level, salinity, bed shear stress, sedimentcoh1 (i.e., cohesive suspended sediment concentration), and horizontal and vertical velocities.