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Extracting seismic core phases with array interferometry
2013
Geophysical Research Letters
1] Seismic body waves that sample Earth's core are indispensable for studying the most remote regions of the planet. Traditional core phase studies rely on well-defined earthquake signals, which are spatially and temporally limited. We show that, by stacking ambient-noise cross-correlations between USArray seismometers, body wave phases reflected off the outer core (ScS), and twice refracted through the inner core (PKIKP 2 ) can be clearly extracted. Temporal correlation between the amplitude
doi:10.1002/grl.50237
fatcat:7cmtucfgkbbdtpi723xhqibrim