Sediment concentration variations in the East China Seas over multiple timescales indicated by satellite observations

Spatio‐Temporal Variability of Suspended Sediment Fronts (SSFs) on the Inner Shelf of the East China Sea: The Contribution of Multiple Factors

“…The lowest (highest) FP in summer (winter) can be attributed to the predominant southwest (northeast) winds. Seasonal variations in wind forces can lead to corresponding variations in the ZMCC and wind‐wave intensity (Bian, Jiang, Quan, et al., 2013; X. Liu et al., 2016; Qiao et al., 2020), causing significant changes in surface SSCs (J. Liu et al., 2018; Shi & Wang, 2010; Son et al., 2014; Z. Zhou, Bian, et al., 2020). In winter, under the influence of strong vertical mixing induced by wind, bottom sediments are easily resuspended which can induce significant local variations in the surface SSC (Bian, Jiang, Quan, et al., 2013), thus further enhancing frontal activity through the advection, resuspension, and deposition of sediments.…”

“…In winter, ocean stratification can be weakened by wind‐wave‐induced water mixing and even destroyed by cold air, which facilitates the resuspension of sediments from the bottom to the surface and results in high FP. However, in summer, strong stratification prohibits the upward diffusion of suspended sediments (Luo et al., 2017; Shi & Wang, 2012; Z. Zhou, Bian, et al., 2020). Consequently, due to the obstruction of strong stratification and sediment settling forced by gravity, the sea surface is occupied by relatively uniform water with low FP, and only part of the sediments resuspended by tidal currents can be transported to the surface layer (Bian, Jiang, Quan, et al., 2013; Shi & Wang, 2010; Z. Zhou, Bian, et al., 2020).…”

“…Liu et al, 2016;Qiao et al, 2020), causing significant changes in surface SSCs (J. Liu et al, 2018;Shi & Wang, 2010;Son et al, 2014;Z. Zhou, Bian, et al, 2020).…”

“…In winter, ocean stratification can be weakened by wind-wave-induced water mixing and even destroyed by cold air, which facilitates the resuspension of sediments from the bottom to the surface and results in high FP. However, in summer, strong stratification prohibits the upward diffusion of suspended sediments (Luo et al, 2017;Shi & Wang, 2012;Z. Zhou, Bian, et al, 2020).…”

Dissolved Lead (Pb) Concentrations and Pb Isotope Ratios Along the East China Sea and Kuroshio Transect—Evidence for Isopycnal Transport and Particle Exchange

“…Similar process could also happen in the ECS. Although no data on the particulate or SPM concentration for this cruise is available, previous studies in ECS show that the marginal sea receives abundant crustal particulates from regional rivers, including field samplings in year 2011 (Bi et al., 2020; Ren et al., 2015) and a remote sensing study on suspended solid concentration using images covering 2003–2016 (Zhou et al., 2020). The isotopic compositions of the ECS surface sediments are in the same mixing line between Chinese—crustal sources (Figures 5a and Wang et al., 2014).…”