Frequency synchronization of blue whale calls near Pioneer Seamount
| Autor: | R.W. Bland, Michael D. Hoffman, Newell Garfield |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Sound Spectrography
Time Factors Acoustics and Ultrasonics Bioacoustics Acoustics Seamount Synchronizing Cetacea Models Biological California Tone (musical instrument) Arts and Humanities (miscellaneous) biology.animal Animals Social Behavior Sound (geography) geography Pacific Ocean geography.geographical_feature_category biology Whale Signal Processing Computer-Assisted biology.organism_classification Balaenoptera Vocalization Animal Underwater acoustics Geology |
| Zdroj: | The Journal of the Acoustical Society of America. 128:490-494 |
| ISSN: | 0001-4966 |
| Popis: | Vocalizations of blue whales were recorded with a cabled hydrophone array at Pioneer Seamount, 50 miles off the California coast. Most calls occurred in repeated sequences of two-call pairs (A, then B). The B call is a frequency-modulated tone highly repeatable in form and pitch. A model of this sound is described which permits detecting very small frequency shifts. B calls are found to be aligned in frequency to about one part in 180. This requires very fine pitch discrimination and control over calling frequency, and suggests that synchronizing to a common frequency pattern carries some adaptive advantage. Some possibilities for acoustic sensing by whales requiring this fine frequency resolution are discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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