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

by Kristina Alexander

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... This description may be from another edition of this product.

• Format: Paperback
• Language: English
• ISBN: 128866575X
• ISBN13: 9781288665754
• Release Date: January 2013
• Publisher: Bibliogov
• Length: 22 Pages
• Weight: 0.13 lbs.
• Dimensions: 0.1" x 7.4" x 9.7"