Low Frequency Sound And Marine Mammals


Low Frequency Sound And Marine Mammals
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Low Frequency Sound And Marine Mammals


Low Frequency Sound And Marine Mammals
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 1994-02-01

Low Frequency Sound And Marine Mammals written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994-02-01 with Science categories.


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.



Low Frequency Sound And Marine Mammals


Low Frequency Sound And Marine Mammals
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 1994-01-01

Low Frequency Sound And Marine Mammals written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994-01-01 with Science categories.


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.



Marine Mammals And Low Frequency Sound


Marine Mammals And Low Frequency Sound
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 2000-06-11

Marine Mammals And Low Frequency Sound written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-06-11 with Science categories.


Sound has become a major tool for studying the ocean. Although the ocean is relatively opaque to light, it is relatively transparent to sound. Sound having frequencies below 1,000 Hertz (Hz) is often defined as low-frequency sound. The speed of sound is proportional to the temperature of the water through which it passes. Therefore, sound speed can be used to infer the average temperature of the water volume through which sound waves have passed. The relationship between water temperature and the speed of sound is the basis for the Acoustic Thermometry of Ocean Climate (ATOC) experiment. The ATOC experiment is designed to monitor the travel time of sound between sources off the coasts of Hawaii and California and several receivers around the Pacific Ocean in order to detect trends in ocean temperature and for other research and monitoring purposes. Some whales, seals, and fish use low-frequency sound to communicate and to sense their environments. For example, baleen whales and some toothed whales are known to use and respond to low-frequency sound emitted by other individuals of their species. Sharks are not known to produce low-frequency sound but are attracted to pulsed low-frequency sounds. Therefore, it is possible that human-generated low-frequency sound could interfere with the natural behavior of whales, sharks, and some other marine animals. Marine Mammals and Low-Frequency Sound is an updated review of the National Research Council 1994 report Low-Frequency Sound and Marine Mammals: Current Knowledge and Research Needs, based on data obtained from the MMRP and results of any other relevant research, including ONR's research program in low-frequency sound and marine mammals. This report compares new data with the research needs specified in the 1994 NRC report, focusing on the strengths and weaknesses of the data for answering important outstanding questions about marine mammal responses to low-frequency sound and identifies areas where gaps in our knowledge continue to exist.



Marine Mammals And Noise


Marine Mammals And Noise
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Author : W. John Richardson
language : en
Publisher: Academic Press
Release Date : 2013-10-22

Marine Mammals And Noise written by W. John Richardson and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-22 with Science categories.


Many marine mammals communicate by emitting sounds that pass through water. Such sounds can be received across great distances and can influence the behavior of these undersea creatures. In the past few decades, the oceans have become increasingly noisy, as underwater sounds from propellers, sonars, and other human activities make it difficult for marine mammals to communicate. This book discusses, among many other topics, just how well marine mammals hear, how noisy the oceans have become, and what effects these new sounds have on marine mammals. The baseline of ambient noise, the sounds produced by machines and mammals, the sensitivity of marine mammal hearing, and the reactions of marine mammals are also examined. An essential addition to any marine biologist's library, Marine Mammals and Noise will be especially appealing to marine mammalogists, researchers, policy makers and regulators, and marine biologists and oceanographers using sound in their research.



Effects Of Noise On Marine Mammals


Effects Of Noise On Marine Mammals
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Author : William John Richardson
language : en
Publisher:
Release Date : 1991

Effects Of Noise On Marine Mammals written by William John Richardson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Airplanes categories.




Ocean Noise And Marine Mammals


Ocean Noise And Marine Mammals
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 2003-06-22

Ocean Noise And Marine Mammals written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-06-22 with Science categories.


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.



International Regulation Of Underwater Sound


International Regulation Of Underwater Sound
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Author : Elena McCarthy
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-05-08

International Regulation Of Underwater Sound written by Elena McCarthy and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-05-08 with Science categories.


Numerous incidents suggest that man-made sound injures and can kill marine mammals. This book offers an objective look at how ocean noise should be addressed given the lack of regulatory structure and the scientific uncertainty over the effects of noise on marine life. It is an essential text for policymakers, governments and NGOs, biologists, environmental activists, , oceanographers, and those in the shipping, engineering, and offshore oil and gas industries.



California Acoustic Thermometry Of Ocean Climate Atoc Program And Marine Mammal Research Mmrp Program Monterey County


California Acoustic Thermometry Of Ocean Climate Atoc Program And Marine Mammal Research Mmrp Program Monterey County
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Author :
language : en
Publisher:
Release Date : 1995

California Acoustic Thermometry Of Ocean Climate Atoc Program And Marine Mammal Research Mmrp Program Monterey County written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.




Principles Of Marine Bioacoustics


Principles Of Marine Bioacoustics
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Author : Whitlow W. L. Au
language : en
Publisher: Springer Science & Business Media
Release Date : 2009-07-30

Principles Of Marine Bioacoustics written by Whitlow W. L. Au and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-07-30 with Science categories.


Humans have always been fascinated by marine life, from extremely small diatoms to the largest mammal that inhabits our planet, the blue whale. However, studying marine life in the ocean is an extremely difficult propo- tion because an ocean environment is not only vast but also opaque to most instruments and can be a hostile environment in which to perform expe- ments and research. The use of acoustics is one way to effectively study animal life in the ocean. Acoustic energy propagates in water more efficiently than almost any form of energy and can be utilized by animals for a variety of purposes and also by scientists interested in studying their behavior and natural history. However, underwater acoustics have traditionally been in the domain of physicists, engineers and mathematicians. Studying the natural history of animals is in the domain of biologists and physiologists. Und- standing behavior of animals has traditionally involved psychologists and zoologists. In short, marine bioacoustics is and will continue to be a diverse discipline involving investigators from a variety of backgrounds, with very different knowledge and skill sets. The inherent inter-disciplinary nature of marine bioacoustics presents a large challenge in writing a single text that would be meaningful to various investigators and students interested in this field. Yet we have embarked on this challenge to produce a volume that would be helpful to not only beginning investigators but to seasoned researchers.



Sounding The Depths


Sounding The Depths
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Author : Michael Jasny
language : en
Publisher:
Release Date : 1999

Sounding The Depths written by Michael Jasny and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Fishes categories.