In all, 374 seismic stations recorded the faint vibrational waves from distant earthquakes as they traveled through the rocks beneath. (sciencedaily.com)
The array listens for the echoes of seismic waves — generated by distant earthquakes or small explosions detonated nearby — as they bounce off subsurface structure. (sciencemag.org)
The recordings the instruments made of the reverberations of distant earthquakes from January 2010 to January 2012 were used to create maps of seismic velocities beneath the rift valley. (sciencedaily.com)