Whales and Sonar: Environmental Exemptions for the Navy's Mid-Frequency Active Sonar Training Program by Kristina Alexander

Whales and Sonar: Environmental Exemptions for the Navy's Mid-Frequency Active Sonar Training Program

Kristina Alexander

22 pages missing pub info (editions)

nonfiction politics
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Description

Mid-frequency active (MFA) sonar emits pulses of sound from an underwater transmitter to help determine the size, distance, and speed of objects. The sound waves bounce off objects and reflect back to underwater acoustic receivers as an echo. MFA ...

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