At around 1:08 a.m. local time on January 22, a strong earthquake of magnitude 6.4 occurred in the Hyuga Beach east of the japanese island of Kyushu, and the neighboring islands of Kyushu, Shikoku and the western part of Honshu Island were strongly felt. According to the Japan Meteorological Agency's monitoring data, the earthquake degree in Kyushu, Shikoku, and the western part of Honshu Island generally reached more than 3 degrees.
The degree of earthquake represents the impact caused by the transmission of energy to the surface, or the intensity of the earthquake, which is used to express the degree of influence of an area by the earthquake, divided into several levels, the higher the progression, the more intense the disaster, the heavier the disaster, usually defined by the acceleration of the earthquake shaking. The seismic degree of 3 degrees is enough to have a more obvious seismic sensation, and the earthquake in the Japanese Kyushu Island has recorded a strong seismic intensity of 5, which is a relatively large earthquake, such a seismic degree is enough to cause some concrete houses with poor seismic resistance to large cracks in the walls, beams and columns.
After the earthquake, the area from January 22 to January 23 aftershocks continued, such as January 22 a.m. 05:00-11:00 a.m., the area has 10 consecutive aftershocks, the largest aftershock is 4.2 magnitude, to the evening of January 23, local time, the area also occurred aftershocks, although the frequency of earthquakes has decreased, but the aftershock activity is still very active.
The earthquake occurred in the Hyuga Basin area east of the Japanese island of Kyushu and was in the envisioned area of the "South China Sea Trench Giant Earthquake" that is highly sensitive to all walks of life in Japan, but the Japan Meteorological Agency said that considering that the magnitude did not meet the benchmark, it would not investigate the correlation between the earthquake and the "South Sea Trench Giant Earthquake". However, it also noted that previous cases have shown that earthquakes of a similar magnitude could occur within 1 week, so the region still needs to be vigilant.
At this time, many netizens also have to ask: Will this earthquake be a precursor to the eruption of Mt. Fuji? From the existing observations, Mt. Fuji is not the most active area of tectonic activity in Japan, and the lava flow is basalt basalt, the scale of the eruption is limited, the written record era eruption has not reached a very strong level, in early December, there were continuous earthquakes near Mt. Fuji in Yamanashi Prefecture, and the Japanese Meteorological Agency official Shuda Jin also subsequently said that the volcanic observation data of Mt. Fuji has not been abnormal, and it can be determined that the earthquake is not related to Mt. Fuji, and it can be said that there is no sign of a major eruption of Mt. Fuji at present. The seismic activity in the South China Sea Trench is not clearly linked to Mt. Fuji. Of course, the Japan Earthquake Survey Commission pointed out that the risk of earthquakes in the South China Sea Trench in the Shizuoka-Minami-Kyushu waters is indeed worrying, and according to the Japan Central Disaster Prevention Conference's Disaster Prevention And Countermeasures Promotion Seminar, the number of dead and missing people caused by the tsunami caused by the South Sea Trench earthquake will exceed 231,000.