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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.
Unidentified drones have been reported in the United States for several years prior to current 2024 reports. [25] In late 2019 and 2020, there was a wave of reports of sightings over Colorado and Nebraska. [26] [27] In December 2023, multiple unidentified drone incursions were reported at Langley Air Force Base in Virginia.
Pages in category "Unidentified sounds" The following 11 pages are in this category, out of 11 total. This list may not reflect recent changes. ...
Moneymaker said the October 2023 incident was deemed credible after ruling that species known in the area would not have been able to emit the “strange unidentified sound” that was reported.
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The Hum is a name often given to widespread reports of a persistent and invasive low-frequency humming, rumbling, or droning noise audible to many but not all people. Hums have been reported all over the world, including the United States, the United Kingdom, Australia and Canada.
Banging sounds coming from the Titan search zone briefly raised hopes, before the rising submersible was confirmed to have been destroyed in a ‘catastrophic implosion’.
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