mike21fm 工程文件中的 Minimum depth cutoff

注意：如果建立工程文件后，手动修改了mesh文件，该值不会自动更新。

If the bathymetry level in an element is above the minimum depth cutoff value then the minimum depth cutoff value is replacing the actual bathymetry value in the computations. Please note that the minimum depth cutoff value may be negative as the bathymetry levels is often so in the mesh file. 

If you also apply a Datum shift - the depth cutoff is relative to the corrected depths. 

For instance - you have a mesh file with values between +2 and -20 meters. You then shift these to a different datum with a shift of +1 meters. Your corrected bathymetry now ranges between +1 and -21 m. You can then cutoff all depths above -2m, leaving the bathymetry used in the model to range between -2 and -21 m.