Fig. 2From: Solar terminator effects on middle- to low-latitude Pi2 pulsationsAn example application of the cross-phase analysis (20:09:02–20:19:02 UT, August 24, 2012 event). a Analyzed data band-pass-filtered with a period range of 10–300 s. b Power spectrum density (\(S_{xx}(f)\),\(S_{yy}(f)\)). c Squared coherence (\(C_{xy}(f)^2\)). d Phase lag (\({\theta }_{xy}(f)\))Back to article page