Omen before the earthquake
It is not the first time that people saw strange light before the earthquake, and the record of earthquake luminescence has existed since ancient times. In an ancient Japanese poem, there is a saying: "The earth gently says to the mountains, shaking and shining in the sky." Historically, many witnesses reported that they saw hot orange light, cold blue light, fireballs or flashes a few days before or during the earthquake. As early as 1755, after the Lisbon earthquake rattled the bells of churches in Sweden, the philosopher Kant recorded these warnings: "Eight days before the earthquake, the ground near Cadiz was covered with a large number of earthworms drilled from the soil. There was strong lightning in the sky before other earthquakes, and people noticed that animals were frightened. " 1968, during a series of earthquakes in Dai Song, the first batch of "seismic light" photos were taken at Yeshuiyu, Iwaoka Seismic Observatory. Some show red stripes in the sky, just like the drooping northern lights; Some look like blue twilight in the distance. 1995 before the Kobe earthquake in Japan, some residents also reported seeing orange flashes.
1999 A floating spherical luminous body appeared over Izmit, Turkey. The very next day, a strong earthquake hit the city, killing 6,543.8+500,000 people.
Mysterious or not, people have seen seismic light many times, which proves the existence of seismic light. Every few months before the earthquake, the rocks deep in the earth are squeezed, which will produce a spherical luminous body, jumping out of the ground and rising into the air. They are as big as houses and as small as basketball, and their routes are erratic, giving off colorful light.
These strange luminous bodies are often studied by UFO enthusiasts as UFOs, but more research shows that these luminous bodies are closely related to earthquakes. Whenever UFO sightings are frequently reported in a certain place, earthquakes will occur there. For example, in New Mexico, USA, UFOs appeared many times between 19 15 and 1952. Less than two years later, earthquakes of magnitude 4 to 5 occurred continuously in this area. A few months before the earthquake in Los Angeles, there were many UFOs over the area. In fact, these UFOs are all "earthquake photospheres".
What does seismic light mean?
But for a long time, scientists didn't know what seismic light really meant, and they didn't know why it formed. Seismologists have been looking for reliable earthquake precursors for years. Could these seismic lights be the key to finding earthquake precursors?
As early as the early 1990s, Russian and China scientists claimed that the data released by American meteorological satellites showed that infrared effect would appear in the area around the earthquake a few weeks before the earthquake, but mainstream geologists dismissed this statement as just an accidental coincidence.
A few years later, more and more studies showed that this infrared effect did exist before the earthquake, and the thinking of mainstream geologists began to change. NASA has begun to use meteorological satellites and MODIS research satellites to study seismic light.
Recently, Friedman Fronde, an American geophysicist, put forward a viewpoint worth studying on seismic light and its infrared effect. He believes that the earth plate pushes rocks under strong stress, and when the plate pushed by stress trembles under pressure, the crust above it vibrates, which is the cause of the earthquake.
According to this theory, the stress formed before the earthquake changed the structural shape of minerals in igneous rocks (a kind of rock formed when lava material in the deep part of the earth hardened) and exposed their peroxide chains. Peroxide chain refers to a pair of oxygen ions combined together. When the underground peroxide chain breaks, negatively charged oxygen ions remain in the rock, and the released positive charges begin to spread. When the positive charge expands, they regard rocks as temporary semiconductors, which can change their conductivity. Some free positive charges run to the surface, where they shrink into a thin layer and ionize the air above them, producing visible or infrared radiation.
It is easier to see seismic light in mountainous areas.
According to Flod's theory, this luminescence should appear on rock structures and mountain peaks, because most of the positive charges there are concentrated there. Whether the positive charge can produce visible light or infrared radiation depends on how much charge reaches the rock surface and the landform of the rock surface. Ionization is most likely to occur on mountain peaks or cliffs, thus producing visible light, because the rock surface in these places is relatively large and the charge layer is relatively thin. With the same amount of charge, the thinner the charge layer, the higher the electric field formed in the charge layer, and the easier it is to ionize air. This can explain why it is easier to see seismic light in mountainous areas. Frond also believes that some positive charges should recombine with grounded electrons and return them to peroxide groups. This recombination will release far-infrared radiation, an electromagnetic radiation invisible to human eyes. This is also consistent with seismic observation. This far infrared effect can be detected by satellites a few weeks before the earthquake.
Flanders' theory is now gaining support. However, science does not accept theories without reliable and conclusive evidence. In order to prove that rocks under great pressure can really emit visible light and far infrared radiation, Frond did an experiment. He took several pieces of igneous rocks, such as granite, and crushed them with great pressure. These crushed rocks release visible light and also produce infrared radiation. Not everyone was convinced by Forand's experiment. Some people point out that the earth's crust is full of water and it is a good conductor. Wet rocks will bring positive charges back to their original places. But Frond retorted that although it is a conductor, water has the opposite effect, which may help bring the positive charge of oxygen ions to the surface.
Many geologists suspect that the positive charges released hundreds of kilometers underground are not absorbed at all and spread to the surface. However, Fronde's experimental results show that positive charges can pass through hard rocks at least 25 cm, which is a very long distance for something the size of an atom.
At present, Forand is still looking for other ways to prove his point. Finally, let this theory tell us that it is credible and feasible to detect and predict earthquakes.
The current earthquake prediction model can only use earthquake information to predict the possibility of earthquakes in the next few decades. For example, the Seismological Bureau of the United States predicts that the probability of an earthquake of magnitude 6.7 in San Francisco Bay before 2032 is 67%, which is far from the earthquake prediction required by the people. If the mysterious earthquake light proves to be a reliable earthquake omen, then the annoying earthquake prediction problem can be better solved. When we see this mysterious light on the horizon, we should pack our bags and go out to avoid it.