harmonica.derivative_upward

harmonica.derivative_upward(grid, order=1)

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.

Parameters:

• 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.

Returns:

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.

References

[Blakely1995]

See also

harmonica.filters.derivative_upward_kernel

Examples using harmonica.derivative_upward

Upward derivative of a regular grid

Upward derivative of a regular grid