Fig. 2From: Coupling spectral analysis and hidden Markov models for the segmentation of behavioural patternsExample of a a raw depth time series (in grey) and associated daily median depth (in red) and depth variance (in blue) and b STFT-based (Short Term Fourier Transform) time-frequency analysis of the depth time series for an individual tagged at La Turballe (Tag # A11325)Back to article page