Initial Water Level File (fort.12)

The default initial water level in ADCIRC is the geoid (assumed equal to the still water level). Consequently, any area that has a bathymetric depth below the geoid is assumed to be initially wet. This can be over ridden using this file to allow the representation of areas that have bathymetric depths below the geoid but that are initially dry. Such areas may then flood during the course of the simulation. Reading this file is triggered by setting NOLIFA=3 in the Model Parameter and Periodic Boundary Condition File.

The basic file structure is shown below. Each line of input data is represented by a line containing the input variable name(s) in bold face type. Blank lines are only to enhance readability. Loops indicate multiple lines of input. Definitions of each variable are provided via hot links.

AGRID2
NE, NP
for k=1,NP
jki, DUM1, DUM2, STARTDRY(jki)
end k loop

Notes:

This file has the identical structure as the initial sections of the Grid and Boundary Information File except that STARTDRY is specified instead of depth. This allows a standard grid generating program to set up this file simply by setting STARTDRY equal to –88888 at nodes that have bathymetric depths below the geoid but that should initially be dry. In this file, NE, X(JN), Y(JN) are dummy variables that are included only to maintain the file structure.