function  [UserVar,s,b,S,B,rho,rhow,g]=DefineGeometryAndDensities(UserVar,CtrlVar,MUA,F,FieldsToBeDefined)

Defines model geometry and ice densities

[UserVar,s,b,S,B,alpha]=DefineGeometry(UserVar,CtrlVar,MUA,time,FieldsToBeDefined)

FieldsToBeDefined is a string indicating which return values are required. For example if

FieldsToBeDefined="-s-b-S-B-rho-rhow-g-"

then s, b, S, B, rho, rhow and g needed to be defined.

Typically, in a transient run

FieldsToBeDefined="-S-B-rho-rhow-g-"

implying that only s and b do not needed to be defined, and s and b can be set to any value, for example s=NaN and b=NaN.

It is OK to define values that are not needed, these will simply be ignored by Úa.

As in all other calls:

F.s       : is upper ice surface
F.b       : lower ice surface
F.B       : bedrock
F.S       : ocean surface
F.rhow    :  ocean density (scalar variable)
F.rho     :  ice density (nodal variable)
F.g       :  gravitational acceleration
F.x       : x nodal coordinates
F.y       : y nodal coordinates
F.GF      : The nodal grounded/floating mask (has other subfields)

These fields need to be returned at the nodal coordinates. The nodal x and y coordinates are stored in MUA.coordinates, and also in F as F.x and F.y

B=MismBed(F.x,F.y);

S=B*0;
b=B;
h0=300;
s=b+h0;

rho=917+zeros(MUA.Nnodes,1) ;
rhow=1030;
g=9.81/1000;

end

Published with MATLAB® R2023b