The city created a special team to track what became known as “maple syrup events,” deploying them with special cannisters to capture the aromatic evidence. New Yorkers were baffled for several years in the mid-2000s about sweet-smelling air that would occasionally waft over Manhattan. And sometimes even the most durable ones do get solved. They said they hope to do more studies in coming years and finally solve that particular mystery. But the researchers didn’t have enough information to pinpoint their precise location or cause. The network of sensors picked up unusual signals varying in length from 1 second to 10 seconds that corresponded with the newspaper accounts of mysterious booms. So the researchers believe Seneca Guns are “an atmospheric phenomenon.” They gathered newspaper reports and other accounts of booms between 20 in North Carolina and compared them to data collected by a network of seismographs and atmospheric sensors that were in the area then. Last year, seismologists at the University of North Carolina published results of a study of the East Coast skyquakes. Others suggest certain atmospheric conditions amplify the sounds of large ocean waves crashing far offshore. Some scientists have pointed to bolides, large meteors traveling so fast they explode when they hit the Earth’s atmosphere. The noises have been attributed to various things, from the familiar (earthquakes, sonic booms) to the out-of-this-world. Belgians may have the most fun talking about the phenomenon - “mistpoeffers” - although Filipinos come close: “Retumbos.” India calls them Barisal Guns Japan, Uminari. He said there weren’t thunderstorms in the area at the time of the boom, which was about 5 p.m., and “even with a strong cold front, you won’t get that kind of rumbling.”Įxplosive booms with no definitive origin have been reported all over the world. This time around, Humberto Mendoza Garcilazo, a researcher at the Center of Scientific Research and Higher Education in Ensenada, said supersonic airplanes may have been responsible for the “rumble.” But he also suggested it could have come from the day’s stormy weather and drastic changes in temperature and atmospheric pressure.īrandt Maxwell, a meteorologist with the National Weather Service in San Diego, was skeptical about ties to the weather. “Usually you don’t hear the side booms travel that far. “Those two aircraft went supersonic about 35 miles from the coast,” a Navy spokesman said at the time. In 2012, when a similar boom rattled windows and doors along the local coastline, initial “not us” denials from the military gave way to an admission: The pilots in two Navy F/A-18 aircraft had been showing off for guests aboard the carrier Carl Vinson during a family cruise. Local defense contractors testing some kind of newfangled weapon? Mum was the word there, too, as it usually is with classified military projects. The Marines? They didn’t respond to a request for comment. Zachary Harrell, a Navy spokesman, who noted that planes breaking the sound barrier are required to do it far off the coast. This being San Diego, longtime home to military jets, a lot of folks thought “sonic boom,” too. Their seismic-activity sensors recorded nothing. No satisfactory theory has ever been broached to explain these noises.”Īfter Wednesday’s boom here, the first thought of many people - this being California - was “earthquake.” But the United States Geological Survey said no. The lake seems to be speaking to the surrounding hills, which send back the echoes of its voice in accurate reply. “The report is deep, hollow, distant and imposing. “It is a sound resembling the explosion of a heavy piece of artillery that can be accounted for by none of the known laws of nature,” he wrote.
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