An earthquake with a magnitude of 6.1 occurred in Naqu, Tibet. What are the signs before the earthquake?
According to the official measurement by China Seismological Network, an earthquake of magnitude 6.1 occurred in Ruxian County, Naqu City, Tibet, with a focal depth of 1 kilometers. The epicenter was located at 31.94 degrees north latitude and 92.74 degrees east longitude. For example, there are strong earthquakes in Xiaqu Town, Qiaze Township, Nima Township in Sene District and Baixiong Township in Nierong County.
After the earthquake, Xizang Autonomous Region and Naqu City attached great importance to it and conducted a comprehensive investigation, demanding that all people should move out of dangerous houses to ensure the safety of personnel; It is necessary to quickly mobilize materials and do a good job in the psychological comfort of the masses. Naqu immediately launched a four-level emergency response and organized emergency forces such as public security, fire fighting and civil affairs to rush to the earthquake zone.
At the same time, working groups of cities, counties, townships and villages have arrived at the scene, and organized cadres and village committees to conduct village-by-village investigations to verify the situation. According to the latest news from Naqu Municipal Government, at present, for example, some houses in Xiaqu Town of County have been damaged and cracked, and no casualties have been reported. Relief materials have been sent to Xiaqu Town. The changes behind different anomalies of animals can't be used to predict earthquakes
The biggest difficulty in predicting earthquakes is the difference between earthquake clouds and ordinary clouds. So far, scholars who are keen on using earthquake clouds to predict earthquakes are unclear! Therefore, most cases in which earthquake clouds predict earthquakes are just corresponding earthquakes with hindsight! A scholar of Institute of Atmospheric Physics, Chinese Academy of Sciences-with a big face on his small chest, also thinks that earthquake clouds are common clouds in many meteorology!
As for the abnormality of animals, it is actually a reaction after animals instinctively perceive the changes of the earth's electromagnetic field before the earthquake. However, animals will have abnormal reactions when they encounter climatic and meteorological changes, environmental changes, physiological periods, etc. Until now, human beings have no way to distinguish the changes behind the different abnormalities of animals, so they cannot be used to predict earthquakes. Usually, we should be cautious when using macro anomalies
In short, although macro anomalies are easy to observe, they are difficult to identify and quantify because of the influence and interference of human activities, meteorological and climatic factors, environmental factors and physiological factors of animals and plants, so it is difficult to use them independently in earthquake prediction without micro anomalies at present. Therefore, we should be cautious when using macro anomalies at ordinary times!
Geothermal anomaly refers to the light coming from underground before the earthquake, with various colors, such as silver blue, white purple and so on, which are rare in daily life, but mainly red and white; Its forms are also different, such as ribbon, sphere, column, diffuse and so on. Generally, the earth light appears in a large range, mostly within a few hours to a few minutes before the earthquake and lasts for a few seconds. In the epicenter, there are often "before each earthquake, there is a sound in the ground, and the air swells < P > The abnormal ground sound refers to the sound coming from the ground before the earthquake. Its sound is like a cannon and thunder, and it is also like a heavy car driving and a strong wind. When an earthquake occurs, a longitudinal wave radiates from the source and propagates along the ground, which makes the air vibrate and sound. Because the longitudinal wave has a high speed but a weak potential, people only smell its sound, but they don't feel moving, and they don't feel moving until the shear wave arrives.
Therefore, there is often a record in the epicenter area that "before every earthquake, the sound in the ground swells like a pot of boiling water". If you are in the epicenter, you can often hear the ground sound in a magnitude 3 earthquake. Geosound is the result of the structure and structure of underground rocks and the movement of liquid and gas contained in them, and a considerable part of it is a sign of impending earthquake. Rescue forces from all sides in Tibet also acted quickly to further strengthen earthquake monitoring in the region and do a good job in preventing aftershocks. Rescue forces from all sides in Tibet also acted quickly in this earthquake. After the earthquake, Xizang Autonomous Region Fire Rescue Corps immediately launched the earthquake rescue plan, mobilized the Qiantu Group of Naqu City Fire Rescue Detachment, and the fire rescue brigade of Nierong County, Ruxian County and Suoxian County * * * counted 6 cars and 28 people to go to the epicenter for rescue. The field team of Seismological Bureau of Xizang Autonomous Region also went to Naqu to further strengthen earthquake monitoring in this area and do a good job in aftershock prevention.