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Humpback whale sonar

The Journal of the Acoustical Society of America, 1996
During the winter months male humpback whales produce long complex sequences of sounds which have been described as song. Current hypotheses for the function of humpback whale song speculate that it serves primarily to provide other whales with information about the singer such as location and reproductive fitness.
Eduardo Mercado   +2 more
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Humpback Whale’s Flukes Segmentation Algorithms

2021
Photo-identification consists of the analysis of photographs to identify cetacean individuals based on unique characteristics that each specimen of the same species exhibits. The use of this tool allows us to carry out studies about the size of its population and migratory routes by comparing catalogues. However, the number of images that make up these
Castro Cabanillas, Andrea   +1 more
openaire   +2 more sources

Acoustic interaction of humpback whales and whale-watching boats

Marine Environmental Research, 2000
The underwater acoustic noise of five representative whale-watching boats used in the waters of west Maui was measured in order to study the effects of boat noise on humpback whales. The first set of measurements were performed on 9 and 10 March, close to the peak of the whale season.
W W, Au, M, Green
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Hydrodynamic design of the humpback whale flipper

Journal of Morphology, 1995
AbstractThe humpback whale (Megaptera novaeangliae) is reported to use its elongate pectoral flippers during swimming maneuvers. The morphology of the flipper from a 9.02‐m whale was evaluated with regard to this hydrodynamic function. The flipper had a wing‐like, high aspect ratio plan‐form.
F E, Fish, J M, Battle
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Humpback Whales in the Marianas

2021
PIFSC special publication ; SP-21 ...
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Acoustic properties of humpback whale songs

The Journal of the Acoustical Society of America, 2006
A vertical array of five hydrophones was used to measure the acoustic field in the vertical plane of singing humpback whales. Once a singer was located, two swimmers with snorkel gear were deployed to determine the orientation of the whale and position the boat so that the array could be deployed in front of the whale at a minimum standoff distance of ...
Whitlow W L, Au   +5 more
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Humpback whale song or humpback whale sonar? A reply to Au et al

IEEE Journal of Oceanic Engineering, 2001
Au et al.'s arguments against the hypothesis that humpback whale songs function as long-range sonar are based on questionable assumptions rather than on empirical data. Like other echolocating mammals (e.g., bats), singing humpback whales: 1) localize targets in the absence of visual information; 2) possess a highly innervated peripheral auditory ...
E. Mercado, L.N. Frazer
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Sound production by singing humpback whales

The Journal of the Acoustical Society of America, 2010
Sounds from humpback whale songs were analyzed to evaluate possible mechanisms of sound production. Song sounds fell along a continuum with trains of discrete pulses at one end and continuous tonal signals at the other. This graded vocal repertoire is comparable to that seen in false killer whales [Murray et al. (1998). J. Acoust. Soc. Am.
Eduardo, Mercado   +3 more
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The Lombard effect in humpback whales

The Journal of the Acoustical Society of America, 2012
The Lombard reflex is an increase in the subject's vocal levels in response to increased noise levels. While it has been demonstrated in humans and a small number of mammals and birds including some whales, it has not been demonstrated in humpback whales.
Noad, Michael   +2 more
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Voices of Humpback Whales

Historical Studies in the Natural Sciences
The release of Songs of the Humpback Whale in 1970 helped galvanize a torrent of North American activism to save the whale from commercial whaling. Whale song quickly became a cornerstone of environmentalist and New Age political culture. This article places humpback whale song science in the larger context of acoustic science and technology, arguing ...
openaire   +1 more source

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