Most earthquakes last from a few seconds to minutes. Some of them are much slower - they
By themselves earthquakes are underground tremors andvibrations of the earth's surface. According to modern views, earthquakes reflect the process of geological transformation of the planet. It is believed that the root cause of earthquakes is global geological and tectonic forces, namely the movement of the earth's plates.
Sometimes they slide past each other very slowly, producing vibrations that are only detectable by extremely sensitive equipment.
These slow slip phenomenaevents, SSE) usually last a few weeks, and only a few lasted for three years. But this is nothing compared to the “marathon” earthquake, which was discovered by researchers from Nanyang Technological University in Singapore.
Scientists have studied unusual ancient coral structures known as microatolls off the coast of Sumatra, Indonesia. They grow very slowly, registering changes in the earth's crust.
R. van Vesik, J. Golbuu and G. Roff / CC BY-SA 4.0
The study showed that in slowThe earthquake began in 1829 and lasted 32 years. It ended with the 8.5 magnitude earthquake in Sumatra in 1861, which killed thousands of people.
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