Statistics on earthquakes of magnitude 6 and above this year

[Reporter Chen Xinyu/Taipei Report] The scale of Huadong Waihai occurred in the early morning yesterday.

Nine shallow earthquakes, the maximum earthquake intensity should be four, not only the people in Yi and Hua received a "national level alert" (disaster prevention warning message), but many people were too frightened to sleep.

According to the statistics of the Central Meteorological Administration, the average annual average of earthquakes with a magnitude of 6 or more in previous years is about 2.2%.

Five, there have been eight this year, three times the average; there are about twenty-four or twenty-five earthquakes of scale five to six, and fifty-five this year, more than double the previous year.

Scholars warned that it is necessary to pay attention to the possibility of a large earthquake with a magnitude of 8 or more, which was hidden in the south of the epicenter yesterday, and must pay attention to disaster prevention.

The number of earthquakes of magnitude 6 and above is three times that of previous years

Chen Guochang, director of the Earthquake Prediction Center of the Central Meteorological Administration, said that on January 3 this year, a scale of six.

○ Earthquake, he said at the time, the earthquake will continue to be quite active this year.

Up to now, earthquakes with a magnitude of five or more are two to three times the average of previous years.

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Regarding the reasons for the seismic activity, Chen Guochang said that a new round of seismic activity in Taiwan may have begun in the second half of last year, but how to define an active period?

What is the current active period?

It's all an afterthought, after all earthquakes can't be predicted.

Chen Wenshan, a former professor of the Department of Geology of National Taiwan University, said that the epicenter of the earthquake yesterday was located in the front edge of the subduction zone where earthquakes are frequent, that is, the accretionary rock structure area on the south side of the Nan'ao Basin and the north side of the Ryukyu Trench. Japan's economic sea area and the sea off Miyako Island, where Japan deployed submarine seismographs ten years ago, and studies have considered it to be a high-potential area for large earthquakes and tsunamis.

Chen Wenshan also said that there is no way to assert the scale of five.

Whether the nine earthquakes are foreshocks or not, the whole people and the government need to pay attention to disaster prevention.

The subduction zone is a high potential area for major earthquakes and tsunamis

Ma Guofeng, chief scientist of the Taiwan Earthquake Science Center and a special researcher at the Institute of Earth Sciences of the Academia Sinica, also said that yesterday's preliminary judgment of the Huadong earthquake had nothing to do with 918. What is more worrying is that the earthquake occurred in the south of the epicenter in 1920. .

○The earthquake area is currently in the 100-year cycle. In addition, the Taitung Rift Valley has been seismically active recently. Special attention should be paid to the large earthquake in the subduction zone of the Ryukyu Trench.

Eight that happened that year.

○There are no buildings or gas pipelines during a major earthquake. If it happens in modern times, the consequences will be unimaginable. Therefore, it is necessary to pay attention to disaster prevention. Whether it is automatic gas warning in public facilities, or the fixing of household items, special attention must be paid. Accelerate more.