The nearest-neighbor method implements the interpolation by choosing the value of the nearest sample in the kz domain as the interpolated value at a certain kz. Figure 1 shows the impulse response of three spikes in an anelliptic anisotropic media using Stolt migration and nearest-neighbor interpolation in the kz domain. Many artifacts appear at all depths. In the lower part of the section, the artifacts are even stronger than the real events. These artifacts are caused by wraparound of transformation between the time-space domain and the frequency-wavenumber domain.