Earthquakes: What is the most promising discovery that could prevent large earthquakes? tdex revtli | the answers

Since strong earthquakes occurred in Syria And turkeyThe headlines of the world were flooded with disturbing news, and every country was worried that something similar could happen to them. For this reason, a recent study seeks to predict when and how strong an earthquake will be.

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A group of researchers from the University of Texas at Austin was responsible for directing this study in which they found the phenomenon of friction in defects that allows us to know when and with what violence they are moving, and thus have the potential to be able to. They are further prevented before the earthquake.

This phenomenon, called “conservation of friction” (the ability of a fault to strengthen and store energy between earthquakes), determines how quickly fault surfaces join or heal after an earthquake.

Thus, a bug that regains strength slower is more likely to release energy harmlessly, i.e. a slow slide. Whereas a fault that heals quickly will store this energy until it is released all at once in a large, damaging earthquake.

Of course, this discovery cannot predict when the next earthquake will occur on its own, but it will be extremely useful to specialists when investigating the causes and likelihood of a large and devastating earthquake, the authors said.

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As mentioned National GeographicTo make this discovery, the researchers measured the frictional properties of rocks in the hikurangi subduction zone (slips down) off the coast of New Zealand at a rate of 50 to 60 mm per year.

By compressing rock samples in a hydraulic press, they found that clay-rich rocks take a long time to “set” and slide off easily. Plugging the data into a computer model of the fault, they detected a small, slow-moving tremor every two years, almost exactly on par with real-world observations.

With the right samples and field observations, one can now begin to make testable predictions about the magnitude and frequency of large seismic slip events at other major faults.