intro story Coast / Estuary

Coast / Estuary

Coastal systems are among the most dynamic physical systems on earth and are subject to a large variety of forces. The morphodynamic changes occurring to coastlines worldwide are of great interest and importance. These changes occur as a result of the erosion of sediments, its subsequent transport as bed load or suspended load, and eventual deposition. 
Estuaries are partly enclosed water bodies that have an open connection to the coast. Estuaries generally have one or more branching channels, intertidal mudflats and/or salt marshes. Intertidal areas are of high ecological importance and trap sediments (sands, silts, clays and organic matter).
Within the Delft3D modelling package a large variation of coastal and estuarine physical and chemical processes can be simulated. These include waves, tidal propagation, wind- or wave-induced water level setup, flow induced by salinity or temperature gradients, sand and mud transport, water quality and changing bathymetry (morphology). Delft3D can also be used operationally e.g. storm, surge and algal bloom forecasting. 
On this discussion page you can post questions, research discussions or just share your experience about modelling coastal and/or estuarine systems with Delft3D FM. 




Sub groups
D-Flow Flexible Mesh
Cohesive sediments & muddy systems



Message Boards

Modeling seiche from strong winds and earthquake in Delft3D

Tola Lema, modified 7 Years ago.

Modeling seiche from strong winds and earthquake in Delft3D

Youngling Posts: 10 Join Date: 12/2/11 Recent Posts
Dear Friends,

Seiche is an oscillatory wave generated in lakes, bays, or gulfs as a result of seismic or atmospheric disturbances and with a period ranging from a few minutes to a few hours. I am planning to model seiche (seiche period and water surface elevation) of an enclosed body of water due to strong local winds and earthquake generated seismic waves using Delft3D. I have some experience using Delft3D to model storm surge, but never did seiche modeling using Dleft3D. In the past I used analytical formulas in evaluating seiche.

1. Anybody has experience using Delft3D to model seiche due to wind and seismic wave? I really appreciate if you can share your experience/reference… etc? I have no idea how to model seiche from seismic wave and could't find reference on this.
2. Do I have to create 2D or 3D Delft3D model, which one is better? At some point I will couple the WAVE and the FLOW model to calculate the wave set-up?

I really appreciate your help.