Less than a month before the 7.8 magnitude earthquake in Turkey, a large earthquake of 7.2 magnitude struck Tajikistan at 8:37 on February 23, according to the Chinese seismic station.
According to the latest media reports, the strong earthquake that occurred in Turkey on the 6th of this month has killed more than 50,000 people in Turkey and Syria. However, the 7.2 magnitude earthquake in Tajikistan has not yet received reports of casualties and property damage.
If a series of earthquakes of magnitude 7 or higher occur, is the period of seismic activity on the earth coming?
Seismic activity is a relative concept because the Earth's seismic activity is continuous, and the spatial and temporal distribution of its occurrence is uncertain and complex. Although scientists have been studying seismic activity, they still cannot accurately predict when earthquakes will occur or when they will enter a "seismically active period."
The current seismic activity on Earth has not changed significantly compared to the past, and the distribution and intensity of earthquakes are also very irregular. While signs of seismic activity may occur in some areas, it is uncertain whether it will develop into a global period of seismic activity.
However, as residents of the earth, we should always pay attention to earthquakes and take necessary safety precautions to reduce their impact on us in order to protect ourselves and those around us.
Where are China's seismic zones mainly distributed? Is my home on an earthquake zone?
China is an earthquake-prone area, seismic activity is frequent, a large number of seismic events occur every year, and recently, global seismic activity is frequent, and many people are worried about whether my home is in the earth's seismic zone. Let's take a look at the specific distribution of earthquake zones in China:
The China seismic zone refers to the main seismic zones in the mainland, which are divided into the Northeast Seismic Belt, the North China Seismic Belt, the South China Seismic Belt, the Southwest Seismic Zone and the Qinghai-Tibet Seismic Belt. Among them, the Qinghai-Tibet seismic belt is one of the most active seismic zones in the world and one of the most seismically active areas in China.
1. Qinghai-Tibet seismic zone
The Qinghai-Tibet seismic zone is located in southwest China, including Tibet, Sichuan, Yunnan, Qinghai and other provinces. This is one of the most frequent and intense earthquakes in the world, and many people's families are located in this earthquake zone. In the past few decades, there have been many major earthquakes of magnitude 7 or higher in the Qinghai-Tibet earthquake belt, which have brought great harm to local economic and social development.
2. Northeast Seismic Zone
The Northeast Seismic Zone refers to an earthquake zone in the northeast region of the mainland, including Liaoning, Jilin, Heilongjiang and other provinces. Located at the junction of the Eurasian and Pacific plates, this area is one of the most stable tectonic zones in the country, but some smaller earthquakes still occur. Recently, the largest earthquake in the Northeast Earthquake Zone was the 2003 Songcheng earthquake, with a magnitude of 5.1.
3. North China seismic zone
The North China Seismic Zone is located in northern China, including Hebei, Shanxi, Shaanxi, Shandong and other provinces. This area is one of the most seismically active in China, with many historically large earthquakes, such as the 1976 Tangshan earthquake. The seismic activity of the North China Seismic Zone is mainly caused by the complex tectonic and geological movement of the northern Chinese crust.
4. South China seismic zone
The South China Seismic Zone is located in the southern part of the mainland, including Guangdong, Guangxi, Fujian, Hainan and other provinces. Seismic activity in this area is mainly caused by the collision of the Pacific and Indian Ocean plates. Although seismic activity is frequent in the South China seismic belt, most of the earthquakes are small in scale and have little impact on the lives and property of local residents.
5. Southwest seismic zone
The Southwest Seismic Zone is located in southwest China, including Sichuan, Yunnan, Guizhou and other provinces. This area is one of the most seismically active areas in China and one of the most frequent and intense earthquakes in the world. In the past few decades, there have been many large earthquakes of magnitude 7 or higher in the southwest seismic belt, which have also brought great adverse effects to local economic and social development.
What should we do when an earthquake strikes?
Earthquake prediction is a hot area of current research in the scientific community, but it is still impossible to accurately predict the specific time and place of earthquake occurrence. Therefore, for residents living in the earthquake zone, we must reduce the impact of earthquakes on their lives and property through daily learning and preventive measures.
An earthquake is a sudden natural disaster, and when an earthquake occurs, we need to remain calm and quickly take appropriate measures to protect our own safety and the safety of others. Here are some of the things you need to do in the event of an earthquake:
1. Stay calm and don't panic. If you are indoors, don't try to run out, but find sheltered locations as soon as possible, such as tables, beds, cabinets, etc., and hide underneath. If you are outdoors, you should stay away from buildings and find open areas to hide.
2. During the earthquake, do not use the elevator and do not gather at the entrance of the stairs to avoid crowding.
3. When the earthquake stops, you should carefully walk out of the evacuation place, paying attention to avoid possible damage caused by glass fragments, collapsed objects, power lines, etc. Do not use lighters or other open flames to prevent gas leaks from causing fires.
4) If you are trapped in the rubble, stay as calm as possible and call out the name of the rescuer or use your mobile phone to send a distress signal. Keep breathing easy and try to find shelter to avoid further damage to your head and body.
5. After an earthquake, you should pay close attention to the earthquake information and emergency measures issued by the local government, and follow the guidance and instructions.
In short, when an earthquake occurs, stay calm and take appropriate measures to protect your own safety and the safety of others. At the same time, we must do a good job in earthquake prevention, strengthen the study of earthquake knowledge, and improve our self-rescue ability.