Configuration File

The configuration file can be used to avoid having to use many single letter options (-a, -j, etc.) and set the options in this file. If Magellan is run with the configuration file and any option, the resulting model will use the option(s) specified and ignore the one in the configuration file. To use the configuration file filename when running Magellan the -c option can be used followed by the configuration file (magellan -c filename). The parameters/files that can be specified in the configuration file are

• data file (as described above)
• asymmetry file (as described above)
• spreading rate file (as described above)
• jump file (as described above)
• magnetization file (as described above)
• timescale (as described above), default is the timescale of Cande and Kent (1995)
• inclination (inclination=degrees), default is 45
• declination (declination=degrees), default is 45
• profile azimuth (profile_azimuth=degrees), default is 90
• ridge azimuth (ridge_azimuth=degrees), default is 0
• spreading direction (spreading_direction=degrees), default is 0
• thickness of the magnetized layer (thickness=km), default is 0.5km
• spacing between the points where the model is calculated (pointspacing), default is 1km

Henceforth, Magellan can be run only with the configuration file specified. Here is an example of a configuration file

% Configuration file example
thickness=1
inclination=30
declination=10
spreadingrate=track.spr
asymmetry=track.as
magnetization=track.mag
jump=track.jump
data=track.xzd
timescale=mytimescale
pointspacing=0.5
profile_azimuth=30
spreading_direction=20
ridge_azimuth=130

Figure: The output from Magellan.