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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.
A spectrogram of Upsweep. Upsweep is a 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, and is loud enough to be detected throughout the entire Pacific Ocean.
Unidentified sounds (11 P) U. Unidentified flying objects (5 C, 8 P) W. Anomalous weather (19 P) Pages in category "Unexplained phenomena"
Social media users have also pointed out this video, although filmed by a reputable news crew, is likely a trick of the light on a camera lens. Video 2: Lights cruise over rooftop
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Pages in category "Unidentified sounds" The following 11 pages are in this category, out of 11 total. This list may not reflect recent changes. ...
During AccuWeather's live broadcast, veteran storm chaser Aaron Jayjack was reporting from a bridge above a creek when a portion of the bridge collapsed, taking a man's SUV with it.
One ferry that linked the towns of Edenton and Mackeys, North Carolina, continued in service from 1734 to 1938, when a bridge was built across the Sound. Another, longer bridge of more than 3 miles (4.8 km) in length was built in 1990. Fishing was a major industry in the Albemarle Sound from the colonial period.