sediment transport modelling
3-dimensional cohesive sediment transport model
description:
The 3-dimentional transport model is based on the Tracer Method (Lagrange - Monte Carlo Method). Sedimentary matter is described by particles, each representing particular amount of mass and characteristic properties, which can be vary amongst the particles considered in the simulation. The particles enter the domain at the location of the source and their transport and fate is traced with time.
simulated processes:
:: Partice advection and dispersion (deterministic and stochastic displacement respectively)
:: Effects of water-column stratification to the vertical propagation of the sedimentary plume
:: Mean particle diameter evolution due to flocculation-deflocculation
:: Evolution of bulk density of the cohesive flock
:: Settling
:: Deposition and gradual self-weight consolidation of deposited sediments
:: Resuspension of deposited matter
:: Erosion of the seabed (physical or mechanical)
Pelagic and benthic processes included in the model and interactions between them
Input:
Seawater velocities (U,V), physical parameters (S,T) and timeseries of masses entering the domain at the sources. Potential sources of particles can be point (e.g. rivers, the seabed) or non-point (e.g. aeolian transported matter).
Output (potential):
:: Snapshots of the domain with respect to suspended - deposited sediments
:: Traces of specific sediment's transport and evolution of characteristics
:: Segragation of the paricles with respect to common properties (location - origin - state)
:: Concentrations of suspended sediments
:: Estimations of sedimentation (rates or total)
Applications:
:: Thermaikos Gulf - riverine input simulation
:: Thermaikos Gulf - aeolian transported matter
:: Thermaikos Gulf - mechanically eroded masses (trawlers)
:: North Aegean Sea
Riverborne sediment Simulations - thermaikos gulf:
Perpetual Year simulation: Input hydrodynamic data from NAS (Kourafalou and Tsiaras, 2007) with perpetual year forcing September '01 - August '02 simulation (03/09/01-31/08/02): Input hydrodynamic data from NAS (Kourafalou and Tsiaras, 2007) with forcing from the POSEIDON system
reasearch Projects:
:: Mediterranean Forecasting System Towards Environmental Predictions (MFSTEP - WP13 - Subtask 13220)
:: European COastal sea OPerational and observing and forecasting system (ECOOP - WP7 - Subtask 3.2)
Related Publications: