Low-frequency whale and seismic airgun sounds recorded in the mid-Atlantic Ocean.
J Acoust Soc Am
; 115(4): 1832-43, 2004 Apr.
Article
de En
| MEDLINE
| ID: mdl-15101661
ABSTRACT
Beginning in February 1999, an array of six autonomous hydrophones was moored near the Mid-Atlantic Ridge (35 degrees N-15 degrees N, 50 degrees W-33 degrees W). Two years of data were reviewed for whale vocalizations by visually examining spectrograms. Four distinct sounds were detected that are believed to be of biological origin (1) a two-part low-frequency moan at roughly 18 Hz lasting 25 s which has previously been attributed to blue whales (Balaenoptera musculus); (2) series of short pulses approximately 18 s apart centered at 22 Hz, which are likely produced by fin whales (B. physalus); (3) series of short, pulsive sounds at 30 Hz and above and approximately 1 s apart that resemble sounds attributed to minke whales (B. acutorostrata); and (4) downswept, pulsive sounds above 30 Hz that are likely from baleen whales. Vocalizations were detected most often in the winter, and blue- and fin whale sounds were detected most often on the northern hydrophones. Sounds from seismic airguns were recorded frequently, particularly during summer, from locations over 3000 km from this array. Whales were detected by these hydrophones despite its location in a very remote part of the Atlantic Ocean that has traditionally been difficult to survey.
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Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Vocalisation animale
/
Baleines
/
Armes à feu
/
Bruit
Limites:
Animals
Langue:
En
Journal:
J Acoust Soc Am
Année:
2004
Type de document:
Article
Pays d'affiliation:
États-Unis d'Amérique