Bats emerge in Deyang, Sichuan:
Indeed, this is not a long time ago, just on the evening of August 28, some residents of Deyang, Sichuan, were frightened by the sudden appearance of a large number of bats, although the sky is not yet dark, but the overwhelming bats flying around in the air, so that the night that has not yet arrived as if it had come in advance, from the live video released by "Sichuan Observation", some people sighed: So scary! So many bats, oh, what is the reason?
Is it normal for so many bats to appear in Sichuan?
People who don't know about bats may think that bats look the same, but in fact, scientists have found as many as 962 species of bats on Earth. However, for many reasons, many species of bats are currently endangered (26 species) and vulnerable (173 species), reaching a total of 231 species, which is of course related to the destruction of their natural habitat, improper hunting, climate change and human interference.
However, specifically in China, although there are also 8 species of bats that have been listed as endangered, there may be a greater threat to the survival of species, but in our vast land, there are also 120 different bats, which belong to 7 families and 30 genera, but from the general direction, the pterodactyl order is divided into insectivorous bats (small bat suborder) and fruit-eating bats (large bat suborder).
In fact, it is not surprising that there are a large number of bats in Sichuan, which may be related to their coming out to prey, after all, many places in Sichuan have been raining continuously for a while, and mosquitoes are really many. Moreover, from the perspective of the distribution range of bats on the earth, as long as it is not the north and south poles, or some oceanic islands, whether it is the eastern hemisphere of the earth, or the western hemisphere, there are actually traces of bat activity, but the number of bats in the subtropical and tropical regions, as well as the relatively large number of bat species. In nature, many species of bats can only live for about four or five years, but there are some bats that can live up to 33 years.
Can the so-called "abnormal animal activity" really indicate that some natural disasters are about to occur?
Although many people think so, the answer to this question is no, especially the earthquake! When it comes to Sichuan, no matter where you are, many people think of earthquakes, just like decades ago, when everyone mentioned Tangshan, the first thing that came to mind was a big earthquake, and Deyang, which is also located in the Chengdu Plain, this time there was large-scale bat activity, which triggered a conjecture about whether it heralded the occurrence of earthquakes.
Indeed, in recent decades, Sichuan has had more than one earthquake of magnitude 7 or above, especially when the Wenchuan earthquake occurred, even some places in Japan, Vietnam and the Philippines felt that there was an earthquake, and the Japan Meteorological Agency said that the seismic wave of that earthquake actually circled the earth 6 times, and China's Tibet, Inner Mongolia, Shanghai and Hong Kong and other places had earthquakes, and nearly 500,000 square kilometers of places suffered serious damage, and the number of victims exceeded 60,000.
Afterwards, many people also listed the abnormal behavior of various animals they saw before the Wenchuan earthquake, and even the special shape of clouds that appeared in the sky, but these have long been debunked by earthquake experts, but there are still people who believe that these can predict the occurrence of earthquakes.
You know, the earthquake itself is sudden and uncontrollable, no one knows at what time it occurs, nor can it accurately predict the depth of the source and the specific amount of energy released.
Even if it is the current earthquake early warning information, it is also the use of seismic wave transmission time difference to achieve, when we are on the mobile phone or TV by the seismic wave how much time is left to reach their own here, the epicenter area has actually occurred earthquake, the biggest significance of the early warning system In addition to understanding the key information of the earthquake, that is, to help people who have a certain distance from the earthquake to fight for more evacuation time, we can judge whether scientific suspension is needed according to the earthquake early warning information.
The Chengdu Plain is not on the seismic belt?
First, the Chengdu Plain, with a total area of 18,810 square kilometers, is not equal to Chengdu, a provincial capital, and the Chengdu Plain, also known as the West Sichuan Plain, is essentially an alluvial plain located in the western part of the basin, in addition to the districts and counties of Chengdu, it also includes some places such as Deyang, Ya'an, meishan and other places.
The base formation time of the Chengdu Plain should be eight or nine billion years away, and indeed so far no scientists have found that there are deep faults in this area, which is relatively stable, which is why the Chengdu Plain has not had such a catastrophic earthquake, because its own structural background does not have any conditions. The reason why there have also been small earthquakes in the middle and edge of the Chengdu Plain is because there are faults, but their activity is very weak, and it is difficult to accumulate strong ground stress, so the earthquakes affected by the Chengdu Plain are mainly from other epicenters, such as the Longmenshan fault zone.
Therefore, sometimes netizens discuss Chengdu, saying that this place often earthquakes, in fact, it is a wrong statement, Chengdu itself is not in the earthquake zone, nor does it belong to which seismic zone, it is difficult to have earthquakes, even if the occurrence is concentrated in Jintang and Longquan these places, this is because the formation of the Longquan Mountains originally began with the squeeze of the earth's crust, so it will occasionally release some energy because of the movement of the earth's crust, which is why the earthquakes in these places generally do not exceed 3 levels.