Fig. 3: Comparisons of stacked PKiKP and PcP waveforms for different arrays from 4 events.
From: Small-scale layered structures at the inner core boundary
a Geographical distribution of the inner core boundary (ICB) reflections. Evt. is the abbreviation of Event. Red crosses denote the reflected points where the stacked PKiKP waveforms are similar to the corresponding PcP (labeled as IN1 to IN3 regions with dash boxes, where IN denotes ICB normal region). Whereas red circles denote the reflected points where the stacked PKiKP and the corresponding PcP waveforms show significant differences (labeled as IA1 to IA6 regions with black boxes, where IA denotes ICB anomalous region). Triangles and stars respectively denote seismic arrays and Events. b Comparisons of stacked PKiKP and PcP waveforms in the dash boxes region. c Comparisons of stacked PKiKP and PcP waveforms in the black boxes regions. Orange and blue traces in (b, c) are the stacked PKiKP and PcP waveforms, respectively. Each trace in (b, c) represents the stacked waveforms of a dense array from one event.
