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Published on: October 25, 2012
Swim track kinematics and calling behavior attributed to Bryde's whales on the Navy's Pacific Missile Range Facility
Tyler A Helble1, E Elizabeth Henderson1, Glenn R Ierley2
1SPAWAR Systems Center Pacific, 53560 Hull Street, San Diego, California 92152-5001, USA.
Abstract:
Time difference of arrival methods for acoustically localizing multiple marine mammals have been applied to recorded data from the Navy's Pacific Missile Range Facility in order to localize and track calls attributed to Bryde's whales. Data were recorded during the months of August-October 2014, and 17 individual tracks were identified. Call characteristics were compared to other Bryde's whale vocalizations from the Pacific Ocean, and locations of the recorded signals were compared to published visual sightings of Bryde's whales in the Hawaiian archipelago. Track kinematic information, such as swim speeds, bearing information, track duration, and directivity, was recorded for the species. The intercall interval was also established for most of the tracks, providing cue rate information for this species that may be useful for future acoustic density estimate calculations.

