Free Access
Fig. 19
Left: unfiltered ⟨ Kuθ ⟩ kernel with r1 at the pole and r2 at a co-latitude of 15.36°. Right: kernel ⟨ Kuθ ⟩ for filtered observations, where the Gaussian phase-speed filter Fℓ(ω) is centered at 125.2 km s-1 with a dispersion of 12.3 km s-1, for ℓ up to 1000. The ray path is shown by the black line.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.