Time series of diving depth, the three axes of head acceleration (heave, surge and sway), spectrogram of the three axes of head acceleration, body acceleration.

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Presentation transcript:

Time series of diving depth, the three axes of head acceleration (heave, surge and sway), spectrogram of the three axes of head acceleration, body acceleration (surge) and the spectrogram of the body acceleration (surge) for two gentoo penguin dives (bird G054, 21 January 2010). Time series of diving depth, the three axes of head acceleration (heave, surge and sway), spectrogram of the three axes of head acceleration, body acceleration (surge) and the spectrogram of the body acceleration (surge) for two gentoo penguin dives (bird G054, 21 January 2010). The dashed lines in the spectrograms show a 0.2 s cycle (i.e. 5 Hz). Note that the amplitude of the high-frequency (>5 Hz) acceleration during the dives is larger for data from the head than those from the body. The high-frequency head acceleration during the dives was clearly observed in the second dive, but not in the first. Nobuo Kokubun et al. J Exp Biol 2011;214:3760-3767 © 2011.