ip_and_q

empymod.model.ip_and_q(**kwargs)

Return In-Phase and Quadrature components for provided model and system.

This wrapper calls dipole two times:

• 1st: with xdirect=None for the secondary field Hs.

• 2nd: with xdirect=True, and only the first value of all model parameters and an empty depth-parameter for the primary field Hp.

It then returns the real (in-phase) and imaginary (quadrature) components of the ratio Hs/Hp, scaled by scale.

This function takes the same input parameters as dipole; see the documentation of dipole for the descriptions. In addition, it takes a scale parameter.

This function is only implemented for frequency-domain data of magnetic sources and receivers.

Parameters:

All parametersSee dipole.

• Restrictions compared to dipole:

  • ab has to be one of [44, 45, 46, 54, 55, 56, 64, 65, 66] (magnetic source and receiver).

  • xdirect is ignored; it is first set to None for Hs, and then to True for Hp.

  • signal has to be None (frequency domain); ft and ftarg have hence no effect.

scalefloat, default: 1e3 (ppt)

Multiplication factor. E.g., 1e3 for ppt, 1e6 for ppm.

Returns:

IP, Qndarrays

In-phase and quadrature values.