The analytical diffusive halfspace solution (Slob et al, 2010, PIER) is only defined for sources and receivers at the interface or within the subsurface. However, empymod does not check that, and will return a (mirrored) response even if source and receiver are placed in the air.
(In a way, what it returns is using abs(z), hence forcing it into the subsurface.)
TODO: Add check to ensure sources and receivers are in the subsurface. Add a note, don't check.
The analytical diffusive halfspace solution (Slob et al, 2010, PIER) is only defined for sources and receivers at the interface or within the subsurface. However,
empymoddoes not check that, and will return a (mirrored) response even if source and receiver are placed in the air.(In a way, what it returns is using
abs(z), hence forcing it into the subsurface.)TODO: Add check to ensure sources and receivers are in the subsurface.Add a note, don't check.