China News Service, March 9th. According to a report by the Japan Broadcasting Association (NHK) on the 9th, the Japan Meteorological Agency announced that during the 10 years from 2011 to 2020 when the Great East Japan Earthquake occurred, the aftershock area of the major earthquake off the coast of Tohoku, Japan, A total of 570,207 earthquakes were observed.
On February 13, local time, in Fukushima Prefecture, Japan, after the earthquake, an employee cleaned up broken wine bottles in the shop.
In the last 10 years before the Great East Japan Earthquake, from 2001 to 2010, the total number of earthquakes observed was 188,766.
It can be seen that the number of earthquakes in the last 10 years is about three times that of the previous 10 years.
Among them, earthquakes with a magnitude of more than 5 on the Richter scale have occurred 1012 times in the last 10 years, which is about 5 times that of the previous 10 years.
In terms of the number of earthquakes in each year, in 2011 when the Great East Japan Earthquake occurred, there were a total of 135,794. After 2012, although there have been increases and decreases in each year, the overall trend is slowly decreasing.
In 2020, there will be a total of 48,438 occurrences. Although this number is significantly reduced compared with 2011, it is still higher than the average annual number of the previous 10 years before the earthquake.
The big earthquake occurred in northeastern Japan 10 years ago, and the Japan Trench extends from the coast of the northeast to the coast of Kanto.
Some analysts believe that the probability of large earthquakes above 7 on the Richter scale in the area surrounding the trench is higher in the future. For this reason, the Japan Meteorological Agency urges the public to continue to be vigilant.