Earth tune: scientists have discovered unusual sound of the Earth's atmosphere

Scientists have discovered unusual sound of the Earth's atmosphere

Our planet has its own melody. A group of scientists from the University of Hawaii discovered that fact during a study conducted in collaboration with the colleagues from Kyoto University. When they are being asked how our planet exactly sounds, they answer: like a bell ringing. It vibrates, using a low tone as the basis and repeating in high tones, producing a very pleasant hearing musical sound.

It is created by the atmosphere of the planet, confirming a number of vivid hypotheses that physicists have worked on over the past two centuries. To the human ear, that sound is inaccessible.

It is produced in the form of large-scale waves under the influence of atmospheric pressure, encircling the globe and spreading around the equator. Some of these waves move from the East to the West, others from the West to the East. Each wave is a resonant vibration of the global atmosphere that is similar to one of the resonant heights of the sound of the bell.

The assumption of the existence of atmospheric resonances arose for the first time at the beginning of the 19th century. A physicist and mathematician Pierrot-Simon Laplace suggested that they exist, further research was carried out over the next two centuries.

They came to the theory of the lengths and frequencies of such waves and that they are in the atmosphere. Takatoshi Sakazaki, who is an assistant professor at the Kyoto University Graduate School of Sciences, noted that the latest study was based on a detailed analysis of the observed atmospheric pressure over the globe.

Indicators were shot every hour for 38 years. The results revealed the presence of dozens of wave formations. They occur in different periods - from 2 to 33 hours, passing horizontally through the atmosphere and moving around the globe at high speed, reaching 350 kilometers per hour.

According to the researchers, the formation of waves from movement and power completely coincide with the characteristics of the sound of the bell. That discovery solves a long-standing and classical problem in the science of the atmosphere, but also opens up new possibilities for studying the processes that excite waves and the processes that decay in the waves.