Earth's Hidden Pulse The 26-Second Microseismic Beat
Every 26 seconds, the Earth emits barely perceptible oscillations known as microseismic waves. This phenomenon was first recorded by geologist Jack Oliver in the 1960s, while he was working at the Lamont-Doherty Earth Observatory of Columbia University. Back then, the instruments were less refined, yet the noise could be captured even then, as reported by Popular Mechanics.
In This Article:
Origin of the Pulse Bay of Bonny in the Gulf of Guinea
Today scientists know the exact origin of the pulsation — the Bay of Bonny in the Gulf of Guinea. But the reasons for these regular oscillations have not been determined even after six decades.
Two Competing Theories Ocean Floor Reflections vs Volcanic Activity
Some researchers think the source lies in the features of the ocean floor. Continental shelves act like giant breakwaters, reflecting waves back into the ocean. Perhaps it is the impact of ocean waves on the continental shelf that triggers this unique sound. However, other scientists lean toward a volcanic version. After all, the origin point is located near the volcano on the island of São Tomé, and a similar phenomenon has been recorded near a volcano in Japan. Thus, volcanic origin seems quite plausible.
Seismologists Are Not Alarmed The Mystery Persists
Despite the lack of a clear explanation, the problem does not cause serious concern among seismologists. Scientists are busy studying far more significant earthquakes and seismic phenomena.
