ISSM Instructions

Step 1: Open Matlab

• In command line type: addpath ~/Documents/ISSM/trunk/bin/ ~Documents/ISSM/trunk/lib/
  • This has to be entered every time you open up Matlab and run ISSM
• In the open file header navigate to your tutorial folder of choice: Users/geodynamics/Documents/ISSM/trunk/examples/AntByrd

Step 2: Open Start.m file

• Open the Start.m file within the tutorial folder
• Edit the file so steps = [0 1]
  • Step 0 will designate all data files for the model run
  • Step 1 will run CreSIS.m file which designates variable to the higher resolution data(usually from CreSIS)
• Run the file
  • A contour map of the study area should be displayed

Step 3: Assign model domain

• In the command window type: exptool(‘test.exp’)
  • An interactive gui should pop up on the left hand side of the screen
• Click the button that reads “add a contour (closed)
• Trace an outline of the domain you would like for your model, you can use as many points as you like
• Press “Enter” and then quit the gui
  • Matlab should save your “test.exp” file inside the tutorial folder
• Rename “test.exp” to “Outline.exp”

Step 4: Create Mesh

• Open meshSetup.m
• Edit the file so setupSteps = [1 2 3]
• Several plots should appear including:
  • Original mesh
  • Velocity-refined mesh
  • High resolution bed elevation
  • Low resolution bed elevation
  • Difference between high-res and low-res bed elevation

Step 5: Solve

• Open runme.m
• Edit file so steps = [2:8]
• Several more plots should appear including
  • Grounded vs. floating
  • Ice vs. no ice
  • Bed elevation
  • Friction Coefficient
  • Observed velocity
  • Modeled SSA Velocity
  • Modeled HO Velocity
  • HO-Observed Velocity
  • SSA-Observed Velocity
  • HO-SSA Velocity
  • HO Surface- HO base Velocity
  • Observed Surface velocity
  • Modeled HO Surface Velocity