Extended Data Fig. 3: Amplitude and polarity of PKKP and PKiKP.
From: Seismic detection of a 600-km solid inner core in Mars
a,b, Vespagram analysis of (a) PKiKP and (b) PKKP using 4th-root stacking method, following deconvolving the PKiKP waveform. The red crosses mark the energy peak. In b, APKKP/APKiKP is ~−0.5, suggesting their reversed polarities. c,d, Stacking waveforms of (c) PKiKP and (d) PKKP using linear, 4th-noot, and PWS stacking methods, with the slowness marked in the vespgrams in a and b, respectively. e,f, Synthetic waveforms and envelopes of (e) PKiKP and (f) PKKP, with both traces normalized to the absolute amplitude of PKiKP.
