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 Description:
Minke whales produce a variety of sounds described as thump
trains, ratchets, clicks and grunts (Winn and Perkins 1976;
T.J. Thompson et al. 1979, Richardson et al. 1995). In the Atlantic
Ocean, Beamish and Mitchell (1973) recorded click series, while
Edds-Walton (1999) recorded frequency-modulated 400 msec downsweeps
at around 80 Hz. In Antarctic waters, 200-300
msec low-frequency (130 - 60 Hz) downsweeps were recorded by
Schevill and Watkins (1972). Analysis of our Atlantic data is
still underway, but to date we have recorded pulsive calls sweeping
from around 50-35 Hz.
Click
on spectrogram
for full-sized image.
 12K
wav file(The recorded signal has been sped
up 10 times)
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