Figure 2
From: Marine mammal acoustic detections in the Greenland and Barents Sea, 2013 – 2014 seasons
Spectrogram of a high-frequency echolocation pulse recorded in a click train on Nov 17, 2013. The image shows an indication of an upsweep, characteristic for beaked whale signals. The dominant frequency of all clicks in the segment lies between 31–39 kHz above which the signal could not be analyzed qualitatively (Nyquist frequency).
