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

Wave spectra from uniform wind field

Chelsea Volpano, modified 1 Year ago.

Wave spectra from uniform wind field

Youngling Posts: 1 Join Date: 6/26/19 Recent Posts
Hi All-
I was wondering if there is a way to generate a wave field from *only* time-series wind data using Delft3d. I am new to modelling & any help would be appreciated.
Is there a best-practice way to output spectral wave data from a low resolution grid for use as boundary conditions to a high resolution grid? My ultimate goal is to analyze sediment transport in Delft3d and morphological evolution in Xbeach over a period of weeks~months.
The site I am hoping to model (~1km of coast) does not have any wave buoys nearby, only meteorological stations. The site is in Lake Michigan, which has 2 buoys (both ~170km from my site) which are recovered in winter. Am I better off using this data to run a basin-wide model and nest grids? How would the winter data-gap be overcome?
Thanks very much for your input