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Author: Darlene R. Ketten
Publisher:
ISBN:
Category : Minke whale
Languages : en
Pages : 25
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Book Description
Ultimately this research is to provide proof of concept for using modeling techniques to provide reliable hearing estimates for species thought to be most liable to impacts from oceanic sound sources. To address this, preliminary data were acquired that may later be applied toward calculating a model audiogram of large whale hearing that demonstrates the ability to accurately estimate hearing ranges and peak sensitivities using current anatomical and biomedical engineering techniques. The model proposed is to be created from neuroanatomical data combined with direct measures of middle and inner ear stiffness. For now, preliminary data have been collected, with anatomical measures obtained for the heads and inner ears of two beaked and two minke whales, as well as for 10 ears from these and additional animals. A partial frequency range map for the minke has been completed via CT and histologic data. Specimens have been used to redesign a piezo electric system to accommodate baleen ears, and point stiffness measures have been accomplished for the middle ears of some of the test minke specimens. These data have been compared with earlier results from multiple odontocete and land mammal ears.
Author: Darlene R. Ketten
Publisher:
ISBN:
Category : Minke whale
Languages : en
Pages : 25
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Book Description
Ultimately this research is to provide proof of concept for using modeling techniques to provide reliable hearing estimates for species thought to be most liable to impacts from oceanic sound sources. To address this, preliminary data were acquired that may later be applied toward calculating a model audiogram of large whale hearing that demonstrates the ability to accurately estimate hearing ranges and peak sensitivities using current anatomical and biomedical engineering techniques. The model proposed is to be created from neuroanatomical data combined with direct measures of middle and inner ear stiffness. For now, preliminary data have been collected, with anatomical measures obtained for the heads and inner ears of two beaked and two minke whales, as well as for 10 ears from these and additional animals. A partial frequency range map for the minke has been completed via CT and histologic data. Specimens have been used to redesign a piezo electric system to accommodate baleen ears, and point stiffness measures have been accomplished for the middle ears of some of the test minke specimens. These data have been compared with earlier results from multiple odontocete and land mammal ears.
Author: Whitlow W.L. Au
Publisher: Springer Science & Business Media
ISBN: 1461211506
Category : Science
Languages : en
Pages : 499
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Book Description
Here, experts in different areas of the field provide an overview of the bioacoustics of whales and dolphins as well as a thorough introduction to the subject for investigators of hearing in other animals. Topics covered include the structure and function of cetacean auditory systems, the unique sound production system of odontocetes, acoustic communication, psychoacoustics, echolocation and models of sound propagation.
Author: William John Richardson
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 488
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Book Description
Author: Richard Ellis
Publisher: JHU Press
ISBN: 1421421836
Category : Science
Languages : en
Pages : 207
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Book Description
The only book dedicated to the mysterious beaked whale, this beautiful volume combines full-color illustrations with fascinating facts. Beaked whales have been shrouded in mystery for most of the twentieth century. Denizens of deep, remote ocean waters and highly resistant to life in captivity, they have proven notoriously difficult for humans to observe. Over the past few decades, however, scientists have gained a better understanding of this distinct group of cetaceans, deciphering the natural history of the twenty-two beaked whale species. Here, famed artist and naturalist Richard Ellis and leading beaked whale researcher James G. Mead bring these elusive marine mammals into the limelight. Beaked whales’ generous life spans can extend well past 70 years. They spend their decades diving to extreme depths in search of prey, which they capture by expanding their oral cavity suddenly to suck in the squid or fish they are hunting. It appears that these sleek predators may engage in fierce, clandestine aquatic battles, as the bodies of many males are covered in scars. Because many species are only somewhat larger than dolphins, they are often confused with porpoises; however, some larger beaked whale species may grow to 40 feet. These enigmatic and compelling creatures need our help; their numbers are declining, perhaps due to the damaging effects of naval sonar on their sophisticated auditory systems. In Ellis and Mead’s book, the beaked whales finally get their due. The duo provides a combination of captivating stories about the species, original Richard Ellis art, and photos from leading natural history photographers. The result is an accessible, beautiful book—the first of its kind on this unusual group of cetaceans. Meet the beaked whales, and enjoy the fascinating and mysterious world in which they live.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309050251
Category : Science
Languages : en
Pages : 91
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Book Description
This volume reviews the current state of knowledge regarding the effects of low-frequency sound on marine mammals and makes recommendations for research. In addition, the book describes current federal regulations prescribed under the Marine Mammal Protection Act that govern the taking of marine mammals by scientific research activities, and it recommends changes to expedite the regulatory process dealing with scientific research activities.
Author: David Rothenberg
Publisher: ReadHowYouWant.com
ISBN: 1458759245
Category : Music
Languages : en
Pages : 410
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Book Description
In Thousand Mile Song, musician and philosopher David Rothenberg uses the enigma of whale sounds to explore whether we can truly understand nonhuman minds. Interviewing scholars around the world as they attempt to decipher underwater music, Rothenberg tells the story of scientists and artists confronting an unknown as vast as the ocean. Along the way, he plays his clarinet live with whales in their native habitats, from Russia to Hawaii, making interspecies music that appears on the included CD. Richly detailed and deeply entertaining, Thousand Mile Song is an imaginative look at the most intriguing creatures of the ocean.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309133157
Category : Science
Languages : en
Pages : 220
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Book Description
For the 119 species of marine mammals, as well as for some other aquatic animals, sound is the primary means of learning about the environment and of communicating, navigating, and foraging. The possibility that human-generated noise could harm marine mammals or significantly interfere with their normal activities is an issue of increasing concern. Noise and its potential impacts have been regulated since the passage of the Marine Mammal Protection Act of 1972. Public awareness of the issue escalated in 1990s when researchers began using high-intensity sound to measure ocean climate changes. More recently, the stranding of beaked whales in proximity to Navy sonar use has again put the issue in the spotlight. Ocean Noise and Marine Mammals reviews sources of noise in the ocean environment, what is known of the responses of marine mammals to acoustic disturbance, and what models exist for describing ocean noise and marine mammal responses. Recommendations are made for future data gathering efforts, studies of marine mammal behavior and physiology, and modeling efforts necessary to determine what the long- and short-term impacts of ocean noise on marine mammals.
Author: Charles Siebert
Publisher: Chronicle Books
ISBN: 145210574X
Category : Juvenile Nonfiction
Languages : en
Pages : 112
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Book Description
The Secret World of Whales takes readers deep into the history of human encounters with whales. In conjunction with the Natural Resources Defense Council (NRDC), Charles Siebert illuminates the latest research on these gentle giants. Readers will discover scientific findings that suggest that the human brain and the whale brain are surprisingly similar. They will dive into stories from fiction and legend, as well as real-life tales of ships raised in the air on the back of a whale. With masterful storytelling and impressive photographs, this comprehensive book brings new light to the mysterious underwater world of whales.
Author: Nick Pyenson
Publisher: Penguin
ISBN: 0735224587
Category : Nature
Languages : en
Pages : 337
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Book Description
“A palaeontological howdunnit…[Spying on Whales] captures the excitement of…seeking answers to deep questions in cetacean science.” —Nature Called “the best of science writing” (Edward O. Wilson) and named a best book by Popular Science, a dive into the secret lives of whales, from their four-legged past to their perilous present. Whales are among the largest, most intelligent, deepest diving species to have ever lived on our planet. They evolved from land-roaming, dog-sized creatures into animals that move like fish, breathe like us, can grow to 300,000 pounds, live 200 years and travel entire ocean basins. Whales fill us with terror, awe, and affection--yet there is still so much we don't know about them. Why did it take whales over 50 million years to evolve to such big sizes, and how do they eat enough to stay that big? How did their ancestors return from land to the sea--and what can their lives tell us about evolution as a whole? Importantly, in the sweepstakes of human-driven habitat and climate change, will whales survive? Nick Pyenson's research has given us the answers to some of our biggest questions about whales. He takes us deep inside the Smithsonian's unparalleled fossil collections, to frigid Antarctic waters, and to the arid desert in Chile, where scientists race against time to document the largest fossil whale site ever found. Full of rich storytelling and scientific discovery, Spying on Whales spans the ancient past to an uncertain future--all to better understand the most enigmatic creatures on Earth.
Author: Maya Yamato
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
