SEAMLESS-WAVE is a developing “SoftwarE infrAstructure for Multi-purpose fLood modElling at variouS scaleS” based on "WAVElets" and their versatile properties. The vision behind SEAMLESS-WAVE is to produce an intelligent and holistic modelling framework, which can drastically reduce iterations in building and testing for an optimal model setting, and in controlling the propagation of model-error due to scaling effects and of uncertainty due statistical inputs.
.start
, .start.Qx
, .start.Qy
)By default, LISFLOOD-FP starts the simulations from a zero water depth and zero discharge initial conditions. However, the default initial conditions can be overwritten by user-defined initial water depth (or free-surface elevation) map and/or discharges map.
Water depth (or free-surface elevation) initialisation. With this option, a zero discharge initial condition is retained. Depending on the item entered in the .par
file, LISFLOOD-FP is expected to read an initial condition of a water depth or a free-surface elevation from a .start
file. The .start
file must be an Esri ASCII raster file with the same dimension and resolution (i.e. ncols
, nrows
, xllcorner
, yllcorner
, cellsize
) of the DEM file, followed by a space-delimited 2D array of water depth or free-surface elevation values in metre. To use the initial condition as water depth or free-surface elevation, the items startfile or startelev must be included in the .par
file, respectively, followed by the name of the .start
file to be read. An example of how to prepare a .start
file using QGIS is demonstrated for the Merewether case study in “Preparing the input data”.
Water depth (or free-surface elevation) and discharge initialisation. With this option, LISFLOOD-FP is expected to read the initial condition of either a water depth or a free-surface elevation from a .start
file, as well as the initial condition of unit-width discharges from .start.Qx
and .start.Qy
files. The .start.Qx
and .start.Qy
files must contain the initial conditions of X- and Y- components of the unit-width discharge fields, qx and qy (qx = Qx/h, qy=Qy/h). They must be an Esri ASCII raster file with the same dimension and resolution (i.e. ncols
, nrows
, xllcorner
, yllcorner
, cellsize
) of the DEM file, followed by a space-delimited 2D array of qx or qy values, in square metre per second. These two files must have the same name as the .start
file, while adding the extensions .Qx
and .Qy
after the .start
extension (i.e. .start.Qx
and .start.Qy
). To activate this option, after activating the water depth (or free-surface elevation) initialisation, as explained above, the user only needs to include the item startq2d
in the .par
file.