Wavenumber response of the shear probe

The probe-response correction depends on the dimensions of the shear probe. For a commonly used shear probe the spectrum is corrected for the spatial averaging of the shear probe by multiplying it by the factor correction <math>1+\left( \frac{k}{k_0} \right)^2</math> where <math>k_0</math> = 50 cpm and <math>k</math> is the wavenumber expressed in units of cpm (Macoun and Lueck, 2004). The correction reaches a factor of 10 at a wavenumber of 150 cpm, and it is not recommended to use spectral data beyond this wavenumber unless the probe is small and <math>k_0</math> is larger than 50 cpm.