1 | md=setmesh(model,'../Exp/79North.exp',10000);
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2 | md=meshconvert(md);
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3 | md=setmask(md,'../Exp/79NorthShelf.exp','');
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4 | md=parameterize(md,'../Par/79North.par');
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5 | md=setflowequation(md,'macayeal','all');
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6 |
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7 | %Ice sheet only
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8 | md=modelextract(md,md.mask.elementongroundedice);
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9 | pos=find(md.mesh.vertexonboundary);
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10 | md.balancethickness.spcthickness(pos)=md.geometry.thickness(pos);
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11 |
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12 | %control parameters
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13 | md.inversion.thickness_obs=md.geometry.thickness;
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14 | md.inversion.iscontrol=1;
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15 | md.inversion.thickness_obs=md.geometry.thickness;
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16 | md.inversion.nsteps=2;
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17 | md.inversion.control_parameters={'Vx' 'Vy'};
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18 | md.balancethickness.stabilization=1;
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19 | md.inversion.gradient_scaling=[10/md.constants.yts*ones(md.inversion.nsteps,1) 10/md.constants.yts*ones(md.inversion.nsteps,1)];
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20 | md.inversion.min_parameters=[-2000*ones(md.numberofnodes,1) -2000*ones(md.numberofnodes,1)];
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21 | md.inversion.max_parameters=[+2000*ones(md.numberofnodes,1) +2000*ones(md.numberofnodes,1)];
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22 | md.inversion.cost_functions=201*ones(md.inversion.nsteps,1);
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23 | md.inversion.cost_functions_coefficients=ones(md.numberofnodes,1);
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24 | md.inversion.maxiter_per_step=4*ones(md.inversion.nsteps,1);
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25 | md.inversion.step_threshold=0.99*ones(md.inversion.nsteps,1);
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26 |
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27 | md.cluster=generic('name',oshostname(),'np',3);
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28 | md=solve(md,BalancethicknessSolutionEnum);
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29 |
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30 | %Fields and tolerances to track changes
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31 | field_names ={'Gradient1' 'Gradient2' 'Misfits' 'Vx' 'Vy' 'Thickness'};
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32 | field_tolerances={1e-12,1e-12,1e-12,1e-12,1e-12,1e-12};
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33 | field_values={...
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34 | PatchToVec(md.results.BalancethicknessSolution.Gradient1),...
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35 | PatchToVec(md.results.BalancethicknessSolution.Gradient2),...
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36 | md.results.BalancethicknessSolution.J,...
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37 | PatchToVec(md.results.BalancethicknessSolution.Vx),...
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38 | PatchToVec(md.results.BalancethicknessSolution.Vy),...
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39 | PatchToVec(md.results.BalancethicknessSolution.Thickness)
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40 | };
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