What is FK filtering?

F-k filtering is when seismic data, that is traditionally in the time and displacement domain, is converted into the frequency and wave number (F-k) domain as seen in figure 1 below.

What is fk domain?

1. n. [Geophysics] The use of frequency (abbreviated as f) and wavenumber (k, the reciprocal of wavelength) as the reference framework, obtained by using the Fourier transform over time and space. See: domain, f-k plot, Fourier transform, space frequency domain, wavelength, wavenumber.

What is wavenumber filtering?

A digital filter is often employed to modify the spectrum of a signal in some prescribed manner. Such a selective enhancement is possible on the basis of spectral differences in the frequency wavenumber (ω-k) domain.

What are FK plots?

1. n. [Geophysics] A graphical technique to distinguish subsets of data according to their direction and velocity by plotting and contouring frequency and wavenumber.

How is the 2D frequency wave number ( F-K ) filtered?

2D frequency wave number (F-K) domain filtering: The input seismic data was transformed from the conventional t-x domain to the f-k domain by 2-D Fourier transform using a Vista software routine. The 2-D Fourier transform separates events according to their dips in the f-k domain ( Yilmaz and Doherty,…

How is the f-k filter designed and implemented?

F-K 2D filter design and implementation: The optimum filter ( Fig. 5) was designed in such a way as to mute the unwanted signals based on both frequency and wave number basis. This helped to preserve low frequency signals around the wave number range of -0.1 to 0.2.

How is the f-k filter used in seismic processing?

F-k filter After editing and mute of trace amplitudes, commonly in seismic processing flow chart, it recommends some kind of filtering. The first filter used was f-k filter, which is a two- dimensional filter defined in the frequency domain obtained by Double Fourier Transform:

When is seismic data converted to the f-k domain?

F-k filtering is when seismic data, that is traditionally in the time and displacement domain, is converted into the frequency and wave number (F-k) domain as seen in figure 1 below.