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20th Miyagiken-oki Earthquake Characteristic Aftershock Investigation Commission “Watch out for even stronger tremors”
We call for caution regarding the earthquake off the coast of Miyagi Prefecture that occurred on the 20th, as there is a possibility of an even larger earthquake occurring.
“Possibility of even stronger shaking”
We are drawing attention to the possibility of a magnitude 7 class earthquake with a seismic intensity of 5 or more, or even stronger, over the next week or so.
Aftershocks of the Great East Japan Earthquake
As a replica of the Great East Japan Earthquake, there is an earthquake that occurred off the coast of Fukushima prefecture on February 13 (magnitude 7.3, maximum seismic intensity 6 higher). Is different.
Furthermore, the area of the epicenter of this earthquake is considered to be the area from the coast of the Oshika Peninsula to the offshore area, and it is said that it may overlap with a part of the western part of the area of the epicenter of the earthquake of Miyagiken-oki from 1978 (magnitude 7.4).
Replica characteristic activity
Compared to a general earthquake of this magnitude, it is characterized by the absence of relatively large aftershocks in the surrounding area.
Although there are some characteristics of this area, there are few large aftershocks, so from a statistical point of view, there is a possibility of a large shaking earthquake in the future.
stay tuned
The Earthquake Investigation Committee has drawn attention to the possibility of large-scale earthquakes, strong shaking and high tsunamis occurring in the aftershocks and inland areas of the Great East Japan Earthquake over a long period of time.
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