I would like to understand better the output
strike_dir from PyLith. This output is found on the files fault_info.h5 for example.
In the PyLith manual it says that
strike_dir is the “Direction of fault strike in global coordinate system”.
In the example below I show a fault plane that is perpendicular to the x-direction. The field
strike_dir that is output from PyLith contains 3 components. I am trying to wrap my mind about this information:
The output from
strike_dirare in radians, correct?
In the figure below, why is the x-component of the
strike_diroutput equal to -0.17? Assuming that this is radians, this would correspond to -9 degrees. Shouldn’t it be 90 degrees ?
The y-components is equal zero, which make sense in this case, right?
Why is the z-component equal to -0.98, which in is ~56 degrees?
Thank you in advance for the help.