Diel variation in blue whale calls recorded in the eastern tropical Pacific

  title={Diel variation in blue whale calls recorded in the eastern tropical Pacific},
  author={K. Stafford and S. Moore and C. Fox},
  journal={Animal Behaviour},
  • K. Stafford, S. Moore, C. Fox
  • Published 2005
  • Biology
  • Animal Behaviour
  • Blue whales, Balaenoptera musculus , in northeast Pacific waters often produce a two-part call. The first part, A, is amplitude-modulated, lasting about 17 s, and the second part, B, is frequency-modulated, lasting about 19 s. Type B calls are more easily detected in recordings and are often the signal tracked in long-term monitoring. Automatic detection methods applied to data from a hydrophone moored at 8°N, 95°W in the eastern tropical Pacific (ETP) from 15 May 1996 to 15 May 1997 showed… CONTINUE READING
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