What are the omens before the earthquake? Thank god, help.

According to a large number of earthquake cases and earthquake observation facts, there are precursors before destructive earthquakes occur. Earthquake precursors can be divided into microscopic precursors and macroscopic precursors. Microscopic precursors are abnormal phenomena observed by instruments. Macro precursors refer to various phenomena directly perceived by human senses, that is, the macro anomalies of earthquakes introduced below. A large number of earthquake examples show that the untimely cooling of wells and springs has greatly increased and decreased; Abnormal behaviors and habits of animals; Suddenly there was a rumbling sound from deep underground; Color light images different from thunderstorm and lightning in clear night sky, such as untimely cold flowering of flowers and trees, are closely related to earthquakes. We call these anomalies macroscopic anomalies of earthquakes. In areas with medium and long-term earthquake prediction background, such as earthquake-prone areas and key earthquake monitoring and prevention areas, it is of great significance to mobilize the masses to observe and collect macro anomalies, capture earthquake precursors and report them to the earthquake department in time, so as to do a good job in earthquake prediction and reduce casualties. 1. Before an unusually large earthquake occurred in groundwater, the water levels of wells and springs rose and fell, turned to flowers, whirled, burst, turned to sand, floated oil, became muddy, changed color, changed flavor, warmed up and sprayed water. Earthquake workers and the people have summed up a ballad that vividly reflects the law of groundwater change before the earthquake: well water is a treasure, and the precursors come early. When there is no rain, the spring water is turbid and the well water comes out early. The water level rises and falls, and flowers are bubbling. Some change color, some change taste. It's going to rain, and the water will make trouble. Establish a macro network and report it quickly. For example, the day before the Jingtai earthquake in June 5438+ 10, 1990, the water level of a well in Shangba Village, Lu Zheng Township, Jingtai County dropped, and it was impossible to pump water with the original rope. As a result, an earthquake of magnitude 6 occurred. Two cases occurred the next day. 2. Animal abnormality: 1, cave animals, such as rats and snakes. Their abnormal behaviors before the earthquake include: a large number of holes appeared during hibernation; The activity law is abnormal, and the young are moving in groups; Screaming, panicking, or being stupid, not afraid of people, upset. 2. Aquatic animals, such as fish frogs in rivers, reservoirs and ponds. The common abnormal behaviors before the earthquake are: floating on the water, tumbling and jumping, rotating, coma, sudden change of activity law and so on. 3. Ground animals, such as horses, cows, pigs, dogs and cats. The abnormal behaviors before the earthquake include: not entering the nest, circling around, climbing over the fence, not listening to the master's orders, abnormal barking, panic, listlessness, inability to lie down, etc. 4. Flying animals, such as chickens, ducks, geese, pigeons, birds and insects. Their abnormal behaviors include: abnormal flying, screaming, not entering the nest and not returning to the nest. Or flying around in a cage, changing your lifestyle will be boring. According to the abnormal reaction of animals before the earthquake, the Chinese people wrote a vivid ballad: animals have signs before the earthquake, and it is very important to prevent and treat them by groups. Cattle, sheep, mules and horses don't enter the circle, pigs don't eat dogs and bite people. Ducks don't go into the water and make noise on the shore, but chickens fly up the tree and scream loudly. The snake came out of the hole in the ice and snow, and the big cat ran away with the kitten in its mouth. The rabbit jumped and bumped, and the fish jumped into the water. Bees are moving noisily, but pigeons are too scared to fly back to their nests. Every household observes and comprehensively predicts the abnormal situation. For example, Jingtai 6 the day before. 65438. 19901October 20th, dogs in Xiaxiang village of Jingtai county ran to the mountain in droves and barked at the sky. Mules and horses did not enter the circle one or two days before the earthquake. An hour or two before the earthquake, the horse pulling the cart screamed and ran away. However, this useful information was not reported to the relevant departments and the earthquake department in time, thus losing a good opportunity to predict the impending earthquake. (2) Plant abnormality before the earth spread: Before the earthquake, some plants sometimes had abnormalities, such as premature flowering and fruiting or heavy flowers and fruits. For example, in late June of the year before the Haicheng earthquake of magnitude 7 1 1.0975. Some apricot trees have blossomed. Before the Tangshan earthquake of magnitude 7. 8 July 28th 1976, June 5438+0975+00 Many plants such as pear trees near Tangshan all bloomed twice in advance. 2. Thermal anomalies before major earthquakes: Some earthquakes, especially earthquakes of magnitude 7 or above, have prominent thermal anomalies before earthquakes. This is because, before a strong earthquake, due to the intensive accumulation of in-situ stress, underground thermal energy will change dramatically and be transported to the atmosphere through some channels, so people feel sultry and other thermal anomalies. However, compared with the high temperature during normal meteorological activities, this thermal anomaly before the earthquake has a smaller distribution range and shorter duration, and is controlled by the active tectonic zone, which is often characterized by rapid temperature rise in a short time, uneven distribution of hot pressing and abnormal smell. Third, the terrestrial light-the imminent earthquake signal of the earthquake, the terrestrial light, is a luminous phenomenon produced by the earthquake. The appearance of ground light often indicates that an earthquake is about to happen. Most ground light phenomena occur almost at the same time as earthquakes, but some also occur some time before earthquakes. For example, the ground light of the Tangshan earthquake usually appears within six hours before the earthquake to the blink of an eye, and most of it appears ten minutes before the earthquake. According to the summary of the data about terrestrial light in the past great earthquakes, the shapes of terrestrial light include strip light, strip flash, sheet flash, spherical light, fire light, column light and so on. There are blue, red, white, yellow, orange, green and other colors. In addition, there may be rare composite colors, such as silver blue, white purple and green cyan. When observing terrestrial light, we should pay special attention to its differences from lights, arc lights, reflected light over cities, phosphorescence, lightning and fireworks. For example, before the Tianzhu and Jingtai M6.2 earthquakes of 19901October 20th, people in Zhuangyuan Village of Jingtai, Huxia found that there were milky white light bands about 8 kilometers long on the ridges of Xindun Bay, Xia Xiang and zhang jia zhuang. This time the epicenter was ringing. 4. Earthquake-earthquake, emergency warning before earthquake, is a kind of noise from deep underground before earthquake, and it is a common macro phenomenon of earthquake. It has the following characteristics: 1. Earthquakes usually occur minutes, hours, days or dozens of days before earthquakes, and most of them occur minutes before earthquakes, which is an impending earthquake signal. 2. Before the earthquake, people heard the rumble of machines, thunder, guns, drums, tearing of cloth, whistling of the wind, empty noise in the ditch or voices. Rock outcrops and earthquakes near the water make it easy for people to hear the voice of the earth. 4. There was an earthquake in a large area before the earthquake, and the epicenter was the strongest. According to the characteristics of the ground sound, we can judge the size of the earthquake and the direction of the epicenter. Generally speaking, the louder the voice and the duller the tone, the bigger the earthquake, and vice versa, the smaller the earthquake. Generally speaking, when you hear the sound of the earth, the ground will vibrate quickly. Therefore, when you hear the earth's louder and louder voice, you should leave the house immediately. When it is too late, you can temporarily hide in the lower corner of the pit and other safer places. Second, the key to using earth sound to prevent earthquakes is to distinguish it from the roar of wind, thunder, tractors, cars and planes. For example, in May 1, 9 10, a 3. An earthquake of magnitude 5 occurred in Nanmanjusri Mountain, Jiayuguan, and many people heard the "rumbling" ground motion. 5. Electromagnetic wave phenomenon before the earthquake: When the underground rock breaks, the electromagnetic field of the earth will suddenly and violently change, resulting in abrupt electromagnetic waves. Its macro performance is as follows: the radio disappears normally and makes harsh noise; The TV you watch suddenly has no audio and video, with Xue Huadian and irregular ripples, accompanied by noises such as "snapping"; When no current passes, the idle or unswitched fluorescent tubes suddenly glow. These are all phenomena caused by sudden electromagnetic interference. The above macroscopic anomalies are all precursors before the earthquake. If the general public observes these anomalies, they should report to the earthquake department as soon as possible or take risks as soon as possible.