In the Indian ocean recorded a constant sound wave frequency from 2.9 to 4.5 millihertz.
French, German and British Geophysics for almost 20 years can’t explain the nature of the rumbling of the Earth — acoustic anomalies, manifested in the fluctuations of the ocean floor. A study published in the journal Geophysical Research Letters.
The first rumbling of the Earth was registered in 1998. The nature of the phenomenon geophysicists are still not clear, but they have several hypotheses to explain the phenomenon. Among them, an acoustic resonance between the atmosphere and the earth’s crust or the interactions of the earth’s crust to ocean waves.
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