Estimation of Sediment Transport Parameters From Measured Suspended Concentration Time Series Under Waves and Currents With a New Conceptual Model

Water Resources Research, Journal Year: 2024, Volume and Issue: 60(4)

Published: April 1, 2024

Abstract In‐situ observations of hydrodynamics and suspended sediment concentrations (SSCs) were conducted on an abandoned lobe in the northern part modern Yellow River Delta, China. The SSC record at site is found to be superposition a general trend (fast increase slow decrease cycle) caused by storm waves (SubSSC1) relatively smaller fluctuations tidal currents (SubSSC2). Physically, this indicates that eroded bottom sediments while then re‐suspended advected study area. To further obtain transport parameters, first, SubSSC1 modeled with significant wave height which incorporates “memory curve” consider remaining impacts historical waves. It detected past 75 hr still influence present reasonable because roughly typical duration normal storm. Second, SubSSC2 excursion trigonometric functions measured periodicities. Finally, some for example, background SSC, horizontal gradient, constituents advect it, their relative time lags are optimized from best fits series. proposed framework model construction parameter optimization can extended other sea areas inferring parameters field series specific station.

Language: Английский

Three-dimensional numerical modeling of sediment transport in a highly turbid estuary with pronounced seasonal variations

International Journal of Sediment Research, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Language: Английский