Elusive decibel: Thoughts on sonars and marine mammals
Keywords:Environmental protection, Marine biology, Sonar, Terminology, Units of measurement, Acoustical units
AbstractSonar engineers, marine biologists and environmentally-conscious citizens continue to discuss the issues of using the same acoustical units to avoid confusion and misinterpretation, which can be traced back to the multiple use of the term `decibel'. But the real focus of concern is to determine what underwater sound levels are harmful to marine life. Hence, mitigation measures must be developed to allow underwater acoustic systems to be operated while ensuring the protection of the marine environment.
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