Conclusion of loud bangs in the ground in Quang Nam

According to initial preliminary conclusions, the cause of vibration is accompanied by explosions in Bac Tra My district, in recent years, stimulating earthquakes with intensity from 3.5 to 4 richter scale.

>>>Quang Nam's ground exploded like a bomb

Immediately after the end of the field survey in Bac Tra My district, in the afternoon of December 1, the survey team of the Vietnam Academy of Science and Technology had a meeting with the People's Committee of Quang Nam province, the People's Committee of Bac Tra My district and departments of Quang Nam province.

Accordingly, the cause of vibration is accompanied by explosions in Bac Tra My district, in recent years is an earthquake stimulating with intensity from 3.5 to 4 richter scale. The activity of the fault zones in the North and Northwest North East axis at the left bank of the Song Tranh hydropower plant has existed before. It is manifested that Nuoc Vin hot spring has been discovered in Tra Giac commune, Bac Tra My district. The accumulation of hydroelectricity increases the intensity of the fault zone.

The water filling of Song Tranh hydroelectricity is more and more
increase the activity intensity of the fault zone.

The team surveyed the field at 24 points of communes from Bac Tra My district to Nam Tra My district including Tra Tan, Tra Doc, Tra Giap, Tra Giac and Tra My Towns (belonging to Bac Tra My district) and communes. Tra Don and Tra Mai (belonging to Nam Tra My district). At many different times, people in the above localities have noticed the vibration phenomenon and accompanied by loud bangs with many different levels. Most recently, strong vibrations accompanied by loud bangs occurred on the night of 27th and the morning of November 28.

The members of the survey team, Assoc. Prof. Dr. Phan Trong Trinh and TS. Le Truong Son (Institute of Geophysics) said that the stimulus earthquake related to the accumulation of hydropower has occurred in many large reservoirs such as Hoa Binh and Son La . following the declining trend and after 5 next year, the phenomenon will be exhausted when the hydropower reservoir reaches equilibrium. The earthquake stimulating at Song Tranh 2 hydropower is about 3.5 - 4 Richter scale, while this hydropower can withstand 5 magnitude earthquake, so there is nothing too dangerous. This phenomenon is also not associated with volcanic activity.

Can be dangerous to people

However, the survey team also said that, although this earthquake level did not affect the hydropower project, it could be dangerous for people. Therefore, it is necessary to identify areas with strong earthquake activity to develop a plan to relocate people properly.

The Institute of Geology and Geophysics will draft leaflets, create websites to alert earthquakes to propagate to the people. In addition, Song Tranh 2 hydropower investor is the Hydropower Project Management Unit 3, which is responsible for placing an accelerometer to impact the dam's dam.

On the local side, Vice Chairman of Quang Nam Provincial People's Committee Tran Minh Ca asked the early survey team to have an official report so that the provincial People's Committee informed the people of the above phenomenon thoroughly, reassuring people should not be too bewildered, at the same time direct the local government to have a reasonable plan of conduct to ensure people's lives and properties, and propose relevant functional ministries and agencies to put in a station in Tra My area. monitoring for the people.

According to Mr. Ca, if in the coming days, earthquakes continue to appear here, the leaders of Quang Nam province will have a plan for people to practice earthquake prevention to limit the damage if a big earthquake occurs.