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A skyquake is a phenomenon where a loud banging sound is reported to originate from the sky. The sound may cause noticeable vibration in the ceiling or across a particular room. Those who experience skyquakes typically do not have a clear explanation for what caused them and they are perceived as mysterious.
Upsweep is an unidentified sound detected on the American NOAA's equatorial autonomous hydrophone arrays. This sound was present when the Pacific Marine Environmental Laboratory began recording its sound surveillance system, SOSUS, in August 1991. It consists of a long train of narrow-band upsweeping sounds of several seconds in duration each.
[2] [3] There are various theories about the origin of the sound. One common explanation is that it was caused by the sound of waves, broken up by local topography, [1] but geological origins have also been proposed. [1] The sound is an example of a skyquake – an unexplained sudden loud sound without corresponding earthquake activity.
Now NASA is stepping in to provide some insight into what could actually be causing this scary pattern. NASA scientists believe the ominous noises could potentially be the "background noise" of ...
Forest Grove Sound; H. ... Skyquake; T. The Ping (phenomenon) U. Upsweep This page was last edited on 28 February 2024, at 03:30 (UTC). Text is available under the ...
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In air, they take the form of sound waves, hence they travel at the speed of sound. Typical speeds are 330 m/s in air, 1450 m/s in water and about 5000 m/s in granite . Secondary waves
Within a day of their $25 billion merger’s falling apart in court, Kroger and Albertsons were each planning to move forward with share repurchases to boost their stock prices and reward ...