Fig. 7
From: Distributed sensing of microseisms and teleseisms with submarine dark fibers
Directional spectra. a Mean frequency–wavenumber (f-k) amplitude of ocean waves (primary microseism) as a function of azimuth calculated between 0.05 and 0.25 Hz using the ocean surface gravity wave dispersion relation for each of the four 10-km array segments. b Mean f-k amplitude of Scholte waves (secondary microseism) as a function of azimuth calculated between 1.5 and 3.5 Hz assuming a true phase velocity of 300 m/s and no dispersion across this frequency band.
