Earthquakes in the Noto region Government's Earthquake Research Commission “Activities will continue for the time being”

Following the earthquake in the Noto region, which observed a tremor with a seismic intensity of less than 6 in Suzu City, Ishikawa Prefecture on the 19th, the government's Earthquake Research Committee believes that a series of activities will continue for the time being, based on the situation of seismic activity and crustal movements. I called for attention to strong shaking.

Chairman Naoshi Hirata is calling for preparations for strong shaking, saying that "activities are expected to continue for several months."

Following the earthquake in the Noto region on the 19th, the Earthquake Research Committee of the Headquarters for Earthquake Research Promotion of the government held an extraordinary meeting from the evening of the 20th to analyze observation data.

As a result, based on the analysis of the epicenter, we evaluated that the earthquake on the 19th was one of a series of situations that will continue from 2018.

In addition, crustal movements in which the ground rises were observed at the observation point in Suzu City from around December when seismic activity became active, and although the amount of change slowed down from around January, crustal movements continued. It means that there is.

For this reason, the Earthquake Research Committee said that it is necessary to pay attention to earthquakes with a maximum seismic intensity of 6 lower for the next week or so, and considering the situation of seismic activity and crustal movements, it is thought that a series of activities will continue for the time being. And summarized the evaluation that you should be careful about strong shaking.

Chairman Hirata "Various causes are possible"

Professor Emeritus Naoshi Hirata of the University of Tokyo, chairman of the Earthquake Research Committee, said, "Seismic activity is a typical pattern that returns to a normal state over time when it becomes active, and it can be predicted quantitatively to some extent. On the other hand, there are various possible causes such as the movement of magma and underground water, and the slippage of faults in deep places. It is difficult to quantitatively predict the activity that will continue due to causes other than the earthquake, but the occurrence of the earthquake. Looking at him, there are no signs that it will end soon, and it is expected that it will continue for several months. "