Day again become shorter
As a result of an earthquake in Chile with a magnitude of 8.8, the earth's axis shifted by about 2.7 milli-seconds, that is, by 8 cm, and the duration of the Earth day decreased by 1.26 microseconds. These are the results of a simulation conducted by NASA. This is not so much when compared with the more powerful earthquake of 2004 near Sumatra, with a magnitude of 9.1. Then the day decreased by 6.8 microseconds.
With the help of devices it is almost impossible to fix such microscopic changes, but they can be modeled with a high degree of certainty. With strong tectonic shifts, the mass distribution in the volume of the globe changes, which affects the rotation of the planet.
According to NASA, the axis shift is not the only consequence of the earthquake. For example, the small island of Santa Maria near the second largest Chilean city of Concepcion, could easily climb two meters above sea level. At least as a result of past earthquakes, he was rising.
With the help of devices it is almost impossible to fix such microscopic changes, but they can be modeled with a high degree of certainty. With strong tectonic shifts, the mass distribution in the volume of the globe changes, which affects the rotation of the planet.
According to NASA, the axis shift is not the only consequence of the earthquake. For example, the small island of Santa Maria near the second largest Chilean city of Concepcion, could easily climb two meters above sea level. At least as a result of past earthquakes, he was rising.
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Source: https://habr.com/ru/post/86096/
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