Why are there so many earthquakes in Mexico?

Why are there so many earthquakes in Mexico?

This Friday, another earthquake, of magnitude 5.2, hit Mexico. While authorities have reported that there were no injuries and there was no need for a tsunami warning, many in the country are nervous due to the seismic events this week.

So far, the SSN (National Seismological Service) has reported that there have been 1,650 aftershocks of the 7.7 magnitude earthquake that occurred on September 19, the largest of which occurred at the dawn of September 22. And now this Friday’s earthquake has been added to the list.

The SSC-CDMX (Secretariat of Citizen Security of Mexico City) reported that after the activation of the seismic alert in the capital of the country, a woman lost her life when she hit her head while falling in the stairs of his home, located in the neighborhood of Doctores. , in the Cuauhtémoc district. A man suffered a fatal heart attack after hearing the earthquake alarm, according to local authorities.

Why are there so many earthquakes in Mexico right now?

According to the SSN, five tectonic plates interact in the Mexican Republic: the North American, Cocos, Pacific, Rivera and Caribbean plates. This caused, at least in 2017 after the earthquake of September 19 of that year, a total of 15,400 telluric movements.

SSN experts reported that when two tectonic plates meet, they release a large amount of stresses that can deform the earth’s crust and, for their assessment, require the use of appropriate instruments to measure their impact.

The magnitude 7.1 earthquake on September 19, 2017, which killed 370 and injured 7,289, was caused because the Cocos Plate moved beneath North America and, when material from this plate generated sudden movements on the surface, experts say.

Each tectonic plate has its own movement and is constant. While in the northern part of Mexico they move at a speed of three centimeters per year, in the south this speed can reach seven centimeters per year. This would explain the high seismicity in states like Chiapas and Oaxaca.

According to SSN estimates, from January 1990 to September 2017, more than 86,000 earthquakes were recorded in Mexico. Per day, 15 telluric movements of less than two degrees of magnitude are recorded.

Measurement systems have achieved greater accuracy in measuring these phenomena. Although 796 earthquakes were recorded in 1990 and 15,281 in 2016, there is generally no cause for concern, experts say.

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