active acoustics active acousticssound is purposefully generated and received Related Articles: Measuring Methane Bubble Plumes – October 1, 2018How is sound used to find submarines?Webinar Archive: Introduction to Underwater AcousticsHow do people and animals use sound in the sea?Dr. Benoit-BirdMultibeam EchosounderSonobuoysHow is sound used to measure, detect, and track oil?Multibeam EchosounderModerate or eliminate the effects of human activities Chris Knowlton2018-10-01T12:59:59-05:00