| humpback whale (megaptera novaeangliae) singers in hawaii are attracted to playback of similar song (l). | the use of playback experiments to study humpback whale song was assessed. singers clearly detected playback song while singing and with other singers in the distance. singers approached or joined song similar to their own from as far as 800 m but did not do so for a different (foreign) song. in one compound trial, on the playback of different song, the singer moved away and continued singing; when the playback was changed to similar song, it stopped singing and joined the playback speaker. song ... | 2012 | 23145581 |
| low frequency, ca. 40 hz, pulse trains recorded in the humpback whale assembly in hawaii. | during studies of humpback whale song and social sounds in hawaii, bouts of low frequency (ca. 40 hz) pulses were periodically recorded. one example was made near an active group of eight adults (included 22 bouts, 2-13 s long, over 90 min); another close to an adult male-female pair (12 bouts, 9-93 s long, over 22 min). the mean peak and center frequencies (39 to 40 hz) and bandwidth (13 hz) were similar in both, but the organization of the pulses differed. song components, social sounds, bubbl ... | 2015 | 26627813 |
| between a rock and a hard place: habitat selection in female-calf humpback whale (megaptera novaeangliae) pairs on the hawaiian breeding grounds. | the au'au channel between the islands of maui and lanai, hawaii comprises critical breeding habitat for humpback whales (megaptera novaeangliae) of the central north pacific stock. however, like many regions where marine mega-fauna gather, these waters are also the focus of a flourishing local eco-tourism and whale watching industry. our aim was to establish current trends in habitat preference in female-calf humpback whale pairs within this region, focusing specifically on the busy, eastern por ... | 2012 | 22666432 |
| vocalizations produced by humpback whale (megaptera novaeangliae) calves recorded in hawaii. | although humpback whale (megaptera novaeangliae) calves are reported to vocalize, this has not been measurably verified. during march 2006, an underwater video camera and two-element hydrophone array were used to record nonsong vocalizations from a mother-calf escort off hawaii. acoustic data were analyzed; measured time delays between hydrophones provided bearings to 21 distinct vocalizations produced by the male calf. signals were pulsed (71%), frequency modulated (19%), or amplitude modulated ... | 2008 | 18345861 |
| localization of marine mammals near hawaii using an acoustic propagation model. | humpback whale songs were recorded on six widely spaced receivers of the pacific missile range facility (pmrf) hydrophone network near hawaii during march of 2001. these recordings were used to test a new approach to localizing the whales that exploits the time-difference of arrival (time lag) of their calls as measured between receiver pairs in the pmrf network. the usual technique for estimating source position uses the intersection of hyperbolic curves of constant time lag, but a drawback of ... | 2004 | 15237806 |
| a real-time method for autonomous passive acoustic detection-classification of humpback whales. | this paper describes a method for real-time, autonomous, joint detection-classification of humpback whale vocalizations. the approach adapts the spectrogram correlation method used by mellinger and clark [j. acoust. soc. am. 107, 3518-3529 (2000)] for bowhead whale endnote detection to the humpback whale problem. the objective is the implementation of a system to determine the presence or absence of humpback whales with passive acoustic methods and to perform this classification with low false a ... | 2010 | 21117740 |