1 | % creating thickness
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2 | md.geometry.bed=-100-abs(md.mesh.x)/1000;
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3 | md.geometry.base=-90*ones(md.mesh.numberofvertices,1);
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4 | md.geometry.surface=10*ones(md.mesh.numberofvertices,1);
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5 | md.geometry.thickness=md.geometry.surface-md.geometry.base;
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6 | md.mask.ocean_levelset=-1*ones(md.mesh.numberofvertices,1);
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7 |
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8 | % creating basal drag
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9 | md.friction.coefficient=sqrt(10^7)*ones(md.mesh.numberofvertices,1); %q=1.
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10 | md.friction.p=3*ones(md.mesh.numberofelements,1);
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11 | md.friction.q=zeros(md.mesh.numberofelements,1);
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12 |
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13 | % creating flow law paramter
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14 | md.materials.rheology_B=1/((10^-25)^(1/3))*ones(md.mesh.numberofvertices,1);
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15 | md.materials.rheology_n=3*ones(md.mesh.numberofelements,1);
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16 | md.materials.rheology_law='None';
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17 |
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18 | % creating boundary conditions
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19 | md=SetIceShelfBC(md,'./front.exp');
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20 | md.stressbalance.spcvx=NaN*ones(md.mesh.numberofvertices,1);
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21 | md.stressbalance.spcvy=NaN*ones(md.mesh.numberofvertices,1);
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22 | md.stressbalance.spcvz=NaN*ones(md.mesh.numberofvertices,1);
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23 | pos=find((md.mesh.y<50000.1 & md.mesh.y>49999.9) | (md.mesh.y<0.1 & md.mesh.y>-0.1));
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24 | md.stressbalance.spcvy(pos)=0;
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25 | pos2=find(md.mesh.x<0.1 & md.mesh.x>-0.1);
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26 | md.stressbalance.spcvx(pos2)=0;
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27 | md.stressbalance.spcvz(pos)=NaN;
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28 | md.stressbalance.spcvz(pos2)=NaN;
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29 |
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30 | % creating forcing conditions
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31 | md.smb.mass_balance=0.5*ones(md.mesh.numberofvertices,1);
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32 | md.basalforcings.geothermalflux=0.5*ones(md.mesh.numberofvertices,1);
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33 | md.thermal.spctemperature=NaN*ones(md.mesh.numberofvertices,1);
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34 | md.groundingline.migration='SubelementMigration';
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35 |
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36 | % setting parameters
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37 | md.materials.rho_ice=900;
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38 | md.materials.rho_water=1000;
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39 | md.constants.g=9.8;
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40 | md.constants.yts=3600*24*365;
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41 | md.transient.isthermal=0;
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42 | md.transient.isgroundingline=1;
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43 | md.stressbalance.isnewton=0;
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44 |
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45 | % setting inital condition
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46 | md.initialization.vx=ones(md.mesh.numberofvertices,1);
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47 | md.initialization.vy=ones(md.mesh.numberofvertices,1);
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48 | md.initialization.vz=ones(md.mesh.numberofvertices,1);
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49 | md.initialization.vel=sqrt(2)*ones(md.mesh.numberofvertices,1);
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50 | md.initialization.pressure=md.constants.g*md.materials.rho_ice*md.geometry.thickness;
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51 | md.initialization.temperature=273*ones(md.mesh.numberofvertices,1);
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