Fig. 7
Amplitude of the second harmonic A2 (plus signs) and third harmonic A3 (circles) compared with the amplitude of the fundamental mode A1. The symbols represent the oscillations analysed by Pascoe et al. (2017a) (black), the contracting loop in this paper (red), and SOL2012-10-20 analysed in Sect. 4.2 (green). The blue datapoint is the strongly excited second harmonic reported in Pascoe et al. (2016a). The solid line denotes an amplitude of 0.2A1.
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