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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.
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.
Police officer Lonnie Zamora investigated a roaring sound. Zamora and a nearby tourist found a craft that took off shortly after their arrival. The craft left impressions in the ground that did not aid in identification. [122] 1964-05-23 Solway Firth Spaceman • EU, United Kingdom; Cumbria, England
Pages in category "Unidentified sounds" The following 11 pages are in this category, out of 11 total. This list may not reflect recent changes. ...
The sound was detected at 2am local time by a Canadian P-3 aircraft. It first came every 30 minutes and was heard again four hours later, the internal government memo obtained by CNN states.
The “large boom sound” that startled people across central Orange County just before noon Thursday remains a mystery after the U.S. Department of Defense denied having flights in the area and ...
Upsweep is an unidentified sound detected by the U.S. National Oceanic and Atmospheric Administration's (NOAA) equatorial autonomous hydrophone arrays. The sound was recorded in August, 1991, using the Pacific Marine Environmental Laboratory's underwater sound surveillance system, SOSUS .
Two Lebanon County Game Wardens found the girl's remains on Oct. 10, 1973, in a wooded area in Lebanon County, according to PSP Tips, part of the Pennsylvania State Police Department.