Last week, San Diego residents heard another mysterious “boom” sound with anxious concerns about windows. According to the U.S. Geological Survey, the eruption occurred for the second time in the city in the past three weeks, which was associated with the earthquake. Booms are a long way off. Unknown boom sounds have heard in the United States for hundreds of years. Sometimes with earthquakes, sometimes not, they heard during the New Madrid earthquake of 1811-1812 until January 2020.
These often described as “rushing” or “rolling” and related to cooler temperatures rather than sudden earthquakes. An unusual number of reports have released this year around the world, including a breath-taking sound like Darth Vader in Bratislava and a boom sound heard by Texas residents, although this new report can blamed for much of the silence though. The thunder-like background allows the weather to heard, no longer drowning in the noise of traffic and travel.
Sultry words are not limited to the United States. Around the world, they knew as the “Bansal Gun” in the Ganges Delta and the Bay of Bengal, “Ian” in Shikoku, Japan, and “mistpouffers” (Fog Belch) in Belgium. Loud noises reported to occur more frequently near Seneca Lake in the Finger Lake area of New York.
Known as Seneca guns, the sounds are so loud that they can shatter windows and doors strongly and return to the Charleston earthquake in August 1886 when the sound heard for several weeks after the incident, many resembling aftershocks. Scientists are now using seismic data from the EarthScope Transportable Array (ESTA) to try to interpret words around Europe, comparing it to word descriptions since 2013.
The team from the University of North Carolina at Chapel Hill returned with news from North Carolina, where frequent noises reported. The team is hopeful that it will be able to verify the words with seismo-acoustic data taken from the ESTA. They did not find any similarity with the earthquake. “Generally speaking, we believe it’s an atmospheric phenomenon – we don’t think it came from seismic activity,” researcher Eli Bird told Live Science. “We assume that it is propagating more than soil rather than atmosphere.
Researchers, who presented their findings at the American Geophysical Union’s annual meeting in December, focused on listening to infrasound data – a low-frequency term that is not audible to humans. They picked up the signals – 1 to 10 seconds long, live science report – reported related to booms.m. However, we are not too close to an explanation for the noise or whether the noise due to similar events around the world. There may be a sonic boom from the aircraft breaking the sound barrier rather than many unknown natural causes.
Possible explanations for other events range from stormy waves and tsunamis to widening in a certain direction and the burning of methane gas released from the methane hydrate bed. One promising possibility is that the bolides in the upper atmosphere – the meteors – produce a sonic boom, where the meteor disappears and is not notice until we hear the sound of it forming. For now, until more data is collected, the words remain unresolved.