Geologists Claim That Earthquake Clusters Are Frequent Off The Coast Of Oregon

Earthquake Clusters: Geologists believe that any tremors that occur around the Oregon coast should serve as a warning to take precautions.

The United States Geological Survey reports that throughout the past week, there were dozens of earthquakes occurred in the area of the Blanco Fracture Zone in a matter of days.

Around 150 miles to the west of Coos Bay and parallel to the Juan de Fuca plate is where the Zone can be found running at an angle to the northwest off the coast of Oregon.

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Geologists Claim That Earthquake Clusters Are Frequent Off The Coast Of Oregon

According to Andrew Meigs, a geology professor at Oregon State University, the crust of the planet is made up of a succession of different-sized mobile plates, just like the Juan de Fuca plate. These plates are constantly moving and shifting position.

According to Meigs, “They are able to move together, they are able to move apart, and they are able to move side-to-side.” “The most recent earthquakes have ranged in magnitude from about four to five, with the largest one being slightly larger than that. When earthquakes of that size occur on that fault zone, a magnitude five, magnitude six, or even a magnitude seven probably wouldn’t be felt very strongly, if at all, on the coast at.”

According to Meigs, it is quite improbable that the Zone would cause a tsunami or greater earthquakes that will follow.

Geologists Claim That Earthquake Clusters Are Frequent Off The Coast Of Oregon
Geologists Claim That Earthquake Clusters Are Frequent Off The Coast Of Oregon

According to marine geologist Bob Dziak, the activity of this kind is typical for the Blanco Fracture Zone.

“Frequent earthquakes are brought on by this phenomenon. It appears that there was a major shock followed by an aftershock sequence. The earthquakes that take place along the Blanco typically come in waves, beginning with a significant tremor and then being followed by a number of more minor tremors “explained Dziak.

According to Meigs, the Cascadia Subduction, which is situated far closer to the coast of Oregon, poses a significantly greater threat.

“The Blanco Fracture Zone is a type of fault in which the plates move laterally rather than vertically, unlike the Cascadia Subduction Zone, which is an example of a fault in which the plates move vertically. As a result, the Blanco Fracture Zone presents a lower risk of a tsunami than the Cascadia Subduction Zone. In order to create a tsunami, the sea floor must be either raised or lowered. Either of these actions will cause waves to move over the ocean.”

According to Dziak, the Cascadia Subduction Zone has the potential to produce an earthquake of magnitude 9 or higher.

Based on the number of earthquakes that have occurred in the past, the probability of a significant earthquake happening within the next thirty years is between 15 and 20 percent, even though experts do not have a strong sense of when the next one will happen.

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According to Meigs, his top piece of advice is to always be prepared with enough supplies to last for two weeks. “You can’t predict when it’s going to happen, but you absolutely have an influence on what goes on with you as an individual.”

Since the year 1700, the Cascadia Subduction Zone has not been responsible for any earthquakes.

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