Echolocation signals of wild harbour porpoises, Phocoena phocoena.

@article{Villadsgaard2007EcholocationSO,
  title={Echolocation signals of wild harbour porpoises, Phocoena phocoena.},
  author={Anne Villadsgaard and Magnus Wahlberg and Jakob Tougaard},
  journal={The Journal of experimental biology},
  year={2007},
  volume={210 Pt 1},
  pages={56-64}
}
Field recordings of harbour porpoises (Phocoena phocoena) were made in the inner Danish waters with a vertical array of three or four hydrophones. The back-calculated source level ranged from 178 to 205 dB re 1 muPa pp @ 1 m with a mean source level of 191 dB re 1 muPa pp @ 1 m. The maximum source level was more than 30 dB above what has been measured from captive animals, while the spectral and temporal properties were comparable. Calculations based on the sonar equation indicate that harbour… CONTINUE READING
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