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2. SOFAR channel - Wikipedia

   en.wikipedia.org/wiki/SOFAR_channel

   The SOFAR channel (short for sound fixing and ranging channel), or deep sound channel (DSC), [1] is a horizontal layer of water in the ocean at which depth the speed of sound is at its minimum. The SOFAR channel acts as a waveguide for sound, and low frequency sound waves within the channel may travel thousands of miles before dissipating.

3. Sofar bomb - Wikipedia

   en.wikipedia.org/wiki/Sofar_bomb

   Sofar bomb. In oceanography, a sofar bomb (Sound Fixing And Ranging bomb), occasionally referred to as a sofar disc, [1] is a long-range position-fixing system that uses impulsive sounds in the deep sound channel (SOFAR channel) of the ocean to enable pinpointing of the location of ships or crashed planes. The deep sound channel is ideal for ...

4. RAFOS float - Wikipedia

   en.wikipedia.org/wiki/RAFOS_float

   The SOFAR channel (short for Sound Fixing and Ranging channel), or deep sound channel (DSC), is a horizontal layer of water in the ocean at which depth the speed of sound is minimal, in average around 1200 m deep. [2] It acts as a wave-guide for sound, and low frequency sound waves within the channel may travel thousands of miles before ...

5. Project Mogul - Wikipedia

   en.wikipedia.org/wiki/Project_Mogul

   Project Mogul. Project Mogul (sometimes referred to as Operation Mogul) was a top secret project by the US Army Air Forces involving microphones flown on high-altitude balloons, whose primary purpose was long-distance detection of sound waves generated by Soviet atomic bomb tests. The project was carried out from 1947 until early 1949.

6. Sound speed profile - Wikipedia

   en.wikipedia.org/wiki/Sound_speed_profile

   A sound speed profile shows the speed of sound in water at different vertical levels. It has two general representations: tabular form, with pairs of columns corresponding to ocean depth and the speed of sound at that depth, respectively. a plot of the speed of sound in the ocean as a function of depth, where the vertical axis corresponds to ...

7. SOSUS - Wikipedia

   en.wikipedia.org/wiki/SOSUS

   The original system was capable of oceanic surveillance with the long ranges made possible by exploiting the deep sound channel, or SOFAR channel. An indication of ranges is the first detection, recognition and reporting of a Soviet nuclear submarine coming into the Atlantic through the Greenland-Iceland-United Kingdom (GIUK) gap by an array ...

8. The 7 best invisible hearing aids of 2024, according to ... - AOL

   www.aol.com/lifestyle/best-invisible-hearing...

   Anish Thakkar, Au.D., director of audiology at Los Angeles Center for Ear, Nose, Throat and Allergy. From Eargo to Jabra, Phonak and Starkey, these are the best invisible hearing aids according to ...

9. Underground nuclear weapons testing - Wikipedia

   en.wikipedia.org/wiki/Underground_nuclear...

   Underground nuclear testing is the test detonation of nuclear weapons that is performed underground. When the device being tested is buried at sufficient depth, the nuclear explosion may be contained, with no release of radioactive materials to the atmosphere. The extreme heat and pressure of an underground nuclear explosion cause changes in ...