harmonica.reduction_to_pole#

harmonica.reduction_to_pole(grid, inclination, declination, magnetization_inclination=None, magnetization_declination=None)[source]#

Calculate the reduction to the pole of a magnetic field grid

Compute the reduction to the pole of regular gridded magnetic data using frequency domain calculations through Fast Fourier Transform.

Parameters:

gridxarray.DataArray: A two dimensional xarray.DataArray whose coordinates are evenly spaced (regular grid). Its dimensions should be in the following order: northing, easting. Its coordinates should be defined in the same units.
inclinationfloat in degrees: The inclination of the inducing Geomagnetic field.
declinationfloat in degrees: The declination of the inducing Geomagnetic field.
magnetization_inclinationfloat in degrees or None: The inclination of the total magnetization of the anomaly source. If None, the magnetization_inclination will be set equal to the inclination, neglecting remanent magnetization and self demagnetization. Default None.
magnetization_declinationfloat in degrees: The declination of the total magnetization of the anomaly source. If None, the magnetization_declination will be set equal to the declination, neglecting remanent magnetization and self demagnetization. Default None.

Returns:

reduced_to_pole_gridxarray.DataArray: A xarray.DataArray after reduction to the pole of the passed grid.

Examples using `harmonica.reduction_to_pole`#