harmonica.derivative_upward(grid, order=1)[source]

Calculate the derivative of a potential field grid in the upward direction

Compute the spatial derivative in the upward direction of regular gridded data using frequency domain calculations through Fast Fourier Transform.

  • grid (xarray.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.

  • order (int) – The order of the derivative. Default to 1.


derivative (xarray.DataArray) – A xarray.DataArray with the upward derivatives of the passed grid. Its units are the same units of the grid per units of its coordinates.



Examples using harmonica.derivative_upward