September has not yet appeared, and there have been many earthquakes with relatively large magnitudes. The earthquake was the largest earthquake since 2022, surpassing the magnitude 7.6 earthquake that occurred in Papua New Guinea on September 11.

Earthquakes occurred frequently in September 2022. September has not yet appeared, and there have been many earthquakes with magnitude . Mexico A magnitude 7.7 earthquake occurred on the afternoon of September 19 local time, with a depth of 15 kilometers. The earthquake was the largest earthquake since 2022, surpassing the magnitude 7.6 earthquake that occurred in Papua New Guinea on September 11. At 14:00 on September 18, a magnitude 6.9 earthquake occurred in Hualien County, Taiwan Province, my country, with a focal depth of 10 kilometers. The world has experienced extreme heat attacks in 2022, and the earthquake has come again after September. What’s even more terrifying is that according to research, as global warming, may experience more earthquakes.

Everyone knows that climate change will increase the probability of floods, hurricanes , droughts, and wildfires. But it may not be clear whether climate change will affect the earthquakes under our feet. There are many myths about earthquakes. A common problem is that there are things like "seismic weather" - certain types of weather conditions that usually occur before earthquakes, such as hot, dry or dry and cloudy. This myth originated from the Greek philosopher Aristotle , who proposed in the 4th century BC that earthquakes were caused by trapped winds escaping from underground caves. He believed that the large amount of air trapped underground would make the weather on the Earth's surface hot and calm before the earthquake.

With the emergence of seismology (a study of earthquakes), we know that earthquake (also known as earthquake , tremor or tremor) is caused by the sudden release of energy in the earth's lithosphere to produce seismic wave . The intensity of earthquakes can vary, from weak to unsensible earthquakes, to severe earthquakes that are enough to push objects and people into the air and cause damage throughout the city. earthquake activity in a region is the frequency, type and scale of earthquakes experienced during a specific period of time. Seismic activity The seismic energy release rate at a specific location on the earth is the average seismic energy release rate per unit volume .

We also know that most earthquakes occur far below the surface, far beyond the influence of surface temperature and conditions. Most structure earthquakes originate from a ring of fire with a depth of no more than tens of kilometers. Earthquakes occurring at depths less than 70 kilometers are classified as "shallow source" earthquakes , while earthquakes with focal depths between 70 and 300 kilometers are often referred to as "medium-depth" earthquakes. In the subduction zone, the older and colder ocean crust descends below another tectonic plate, deep-source earthquakes may occur at deeper depths (range from 300 to 700 km). Finally we know that the statistical distribution of earthquakes is roughly equal under all types of weather conditions. So Aristotle's account of earthquakes is wrong.

The evolving global warming emergency has made us hear horrible predictions about how the world will become more unstable and desolate: for example, disasters such as ice melting, sea level rise, extreme weather events, floods and droughts. seems to be not enough, with increasing scientific evidence that high temperatures caused by global warming may also play a role in geological phenomena such as earthquakes, tsunamis and volcanic eruptions.

As the world warms, glaciers around the world are melting. As melt water flows to the sea, the weight of ice pressing on the land decreases and the land rises. The rise known as "glacial equilibrium adjustment" is caused by elastic rebound in the crust and upper mantle or lithosphere. One study found that the hilarious uplift in the central highlands of Iceland exceeds 3 cm per year. GPS (GPS) The measurement results also show that the bulge speed accelerates by 1 to 2 mm per year. Greenland is also rising every year, with speeds accelerating at 3.6 mm per year near the Isbrai Glacier in the west.

Icelandic volcanologists are concerned that reducing the pressure below the glaciers may lead to increased volcanic activity. Below the lithosphere is the asthelium.The high pressure caused by the weight of the earth above this layer keeps most of the asthelium solid; lower the pressure, and more will become liquid and rise to the surface.

At the height of the last ice age about 20,000 years ago, a kilometer-thick ice sheet covered Iceland. As it melts, volcanic activity increases dramatically. Each eruption leaves unique traces on the annual ice layer on Greenland ice sheet that can be identified and ageed from the core samples. These measurements show that when the ice sheet melts rapidly, the level of volcanic activity increases by 30 to 50 times compared to the background rate and lasts for about 1500 years.

Specifically, glaciers and permanent ice sheets in the polar regions of the Earth exert huge pressure on the bedrock , causing it to warp downwards. As the ice melts and the weight is released from the earth's crust, the land's reaction is rebounding, like a slow giant trampoline. This rebound may have an impact on geological faults and magma deposition. Many scientists have now found evidence of how this phenomenon affects volcanic and seismic activity. Volcanologists at the University of Leeds (UK) have studied how glaciers and glacier retreats have affected Iceland's volcanic eruption cycle over the past 12,500 years. When these glaciers retreat, decompression can cause the crust to rise, making magma more likely to reach the surface, which can lead to eruptions.

In short, global warming will affect earthquakes, and as the temperatures get higher and higher in the future, glaciers will melt more and faster, which will increase the number of earthquakes. Especially in areas where earthquakes occur frequently, you must pay attention to earthquake prevention and disaster reduction. You can also prepare some first aid supplies at home, such as emergency supplies storage rescue packages, which contain many items to deal with emergencies. The above is what we have today. I am Huo Zongjun, see you next time. #A 7.7-magnitude earthquake occurred in Mexico, killing 1 person #