Causes of global natural disasters

Global warming leads to frequent earthquakes, volcanic eruptions and catastrophic submarine landslides.

China Daily News Global Online News: The heat wave is getting hotter and hotter, the hurricane is getting fiercer and fiercer, and the sea level is getting higher and higher. These are all warnings from global warming to human beings. But scientists point out that frequent earthquakes are also related to global warming.

According to the Canadian News Agency, the latest science subject to join the global warming debate is geology. Some geologists explain that climate warming directly leads to the melting of the ice sheet, which will release the suppressed pressure in the crust and lead to extreme geological accidents, including earthquakes, tsunamis and volcanic eruptions. The weight of one cubic meter of ice is close to one ton, and the thickness of some ice layers will exceed 1000 meters. When these weights are removed by melting, the crust will spring back to its original shape.

Patrick Wu, a geologist in university of alberta, Canada, used a vivid example to explain this effect: he pressed the football with his thumb, and when the thumb was raised and the surface pressure on the ball was removed, the football would return to its original state. These thick ice layers at the poles of the earth, just like the thumb pressing the earth, bring great pressure to the earth and inhibit the occurrence of earthquakes, but when they melt, they will trigger earthquakes again. When there is an earthquake under the ocean, a tsunami will form. Of course, for the earth, this recovery process is quite slow because the crust is very hard. For example, the occasional earthquake in eastern Canada is actually related to the rebound of the last ice age more than 10 thousand years ago. The melting of snow in Antarctica and Greenland will have the same effect, but this process will be accelerated by the greenhouse effect.

Patrick Wu also said that after the ice melts, the re-liquefied water will cause the sea level to rise and increase the weight borne by the seabed, which may also affect the plates deep in the stratum.

The crust may be more sensitive than many people think, which has been proved by many examples before. For example, after the completion of the dam, the reservoir water intercepted by the dam increased, causing an earthquake. Alan Gherraby Neal, a volcano expert at North Carolina State University, said that when he discovered the relationship between climate change and volcanic activity off the coast of California, he was skeptical at first. However, he went to the library to check the information and found that this connection between climate change and volcanic activity is particularly obvious in many parts of the world, especially in the Mediterranean region. He said: "When the ice melts, the load on the earth's crust is reduced, and under the action of pressure, the magma under the earth's crust is more likely to be ejected. This is a volcano. "

The paper published by British geologist Bill Maguire in New Scientist magazine also pointed out: "There is more and more evidence all over the world that global climate change has affected the frequency of earthquakes, volcanic eruptions and catastrophic submarine landslides. This phenomenon has happened many times in the history of the earth, and the evidence shows that it is happening again. " First of all, the decisive factor of climate formation and change is temperature:

The formation of climate is that the water on the earth's surface is evaporated by light and heat, turned into gas and produced warm current, which is one of the main factors that form wind. Steam gas rises to the sky to form clouds, and thick clouds gather to produce friction and lightning. Thick clouds turn into rain when they meet cold air, and snow when they meet cold air. Warm and humid airflow, cold air and cold air form wind, which determines the climate change. Clouds, rain, snow and lightning are the main phenomena of global climate.

One of the temperatures that form the climate is solar photothermal, which determines the heat in the equator and summer and the temperature rise during the day. Another kind of temperature is the cold in space, which determines the snow cover of glaciers and mountains in the North and South poles and the cooling at night.

Star photothermal and space cold are primitive states in the universe. All the planets in the universe are influenced by these two primitive factors. Its concrete manifestation is that the temperature difference between day and night of all the affected planets is huge. For example, the temperature of the moon is as high as+160 degrees during the day, and it will reach-170 degrees at night, with a temperature difference as high as 330 degrees. Another example is Mars, where the temperature is +420 degrees during the day and-173 degrees at night, and the temperature difference between day and night is as high as 600 degrees. If such a planet is like the earth, it is full of water vapor during the day and it rains heavily or hails at night, and the climate is extremely bad.

Our earth has moderate temperature, stable climate and small temperature difference between day and night, which maintains the normal existence of water and life. This is mainly because there are four kinds of heat insulation functions on the earth: the ozone layer, the atmosphere, the ocean water and the natural ecology.

The ozone layer not only blocks ultraviolet rays and cosmic rays, but also blocks sunlight and heat. The atmosphere has good heat absorption function. The temperature of solar radiation on the surface of the ozone layer is close to 100 degrees, but it reaches the surface through the ozone layer and the kilometer atmosphere, and the highest temperature is only about 30 degrees to 40 degrees, which shows that the ozone layer and the atmosphere block most of the solar heat.

Natural ecology provides oxygen, food, fresh water and a good living environment for life. In addition, the natural ecology can maintain soil erosion, slow down the air flow and maintain the humidity of the air near the ground, thus further ensuring the temperature suitable for survival.

Sea water occupies most of the area. Water can absorb a lot of sunlight and heat into gas, and can also absorb cold air into rain and snow and return to the earth. This fully shows the good regulating effect of water on temperature. The fundamental cause of global climate deterioration is the destruction of two major heat insulation functions on the earth. One is the destruction of the ozone layer. Due to the extensive use of fluorine-containing and chlorine-containing air-conditioned refrigerators, there are a lot of holes in the ozone layer, and its heat resistance in the hole area will be lost. The direct result is that a large amount of sunlight and heat enter the earth, evaporating a large amount of rain, producing strong winds and heavy rains, and forming natural disasters such as floods and mudslides. (For example, the floods in southern and northeastern provinces of China on 20 10, the floods in Pakistan, Australia, the United States and Europe on 201/kloc-0, and the strong storm in the United States in May are all the reasons). The second is the destruction of natural ecology. Due to a large number of human construction activities and serious land desertification, the natural ecology has been degraded and deteriorated in a large area. It not only greatly reduces its functions of supporting, feeding and retaining water for life, but also greatly weakens its heat preservation function. The direct consequence is that the earth is affected by the sun's light and heat and cold space, which will be hotter in summer, colder in winter and the temperature difference between day and night will increase. The hotter the summer, the easier it is to dry the land, and there are more sandstorms and fires. (For example, in 20 10-20 165438, there are frequent droughts, major fires and other natural disasters in China, the United States, Russia and Australia). The colder the winter, the snowstorm and frost will happen, or the land will be very dry in winter. (For example, the so-called extremely cold snowstorm in dry years in Europe, the winter drought of 20 1 1 in China and so on. ).

Global climate deterioration has endangered the survival of life.

Endangering life and health. People will get the flu more easily. Animals are prone to influenza, avian influenza and other seasonal diseases. In particular, animals such as high-altitude birds and shallow water fish in temperature-sensitive areas have been unable to withstand the excessive influence of temperature, and a large number of animal group deaths have occurred. (20 1 1 year, a large number of animal deaths occurred in the United States alone. For example, on June 4th, 65438, there were more than 40,000 dead crabs in Gear Town, USA. On March 8, a million fish died in the port of Los Angeles, California, blocking the port. A large number of animal group deaths have also occurred in other parts of the world. For example, on June 5th, 65438, hundreds of bodies of western Western jackdaw appeared in Stockholm, Sweden. 65438+1On October 8th, more than 8,000 turtledoves died in the northern Italian town of Faenza. In addition, a large number of fish deaths have occurred in New Zealand and other places.

According to related research, dinosaurs became extinct in the global climate deterioration.

Nearly 100 million years ago, dinosaurs ruled the earth. Its huge ethnic group and huge food intake urge them to migrate like locusts to get enough food, so that moving the huge ethnic group to one side will destroy the ecology on one side and make a lot of land desertification. This will worsen the climate. The fatal weakness of dinosaurs with strong vitality is to rely on the stable temperature of nature to ensure the hatching of their next generation. The deterioration of climate will inevitably lead to the impermanence of temperature, so the hatching of dinosaur eggs will be ruined and there is no guarantee. However, the recovery period of natural destruction is much longer than the life cycle of dinosaurs, and it is necessary to get rid of the re-destruction of dinosaur groups in order to slowly restore their natural vitality. As a result, the dinosaur population disappeared, and other animal populations hatched by external temperature basically perished. Only the animal groups hatched from the fetal body temperature that is not affected by the external temperature will multiply (it is unconvincing to speculate that other reasons for the extinction of dinosaurs are scientific, because those disasters can't make the global creatures extinct, nor will the vibrant earth dominate the extinction of dinosaur groups).

Global climate deterioration leads to global natural disasters, which seriously threatens the normal survival of human beings and lives and will naturally eliminate human beings. The first reason is that people, like other animals, must have oxygen, water and food and a suitable temperature to survive. Second, human resources can't compete with natural disasters. Such as earthquake, tsunami, flood, debris flow, strong storm, etc. Faced with these natural disasters, people have to choose to flee and rebuild after the disaster. From 20 10 to 20 1 1, the frequency of global disasters is increasing. If mankind does not make up its mind to correctly understand and take practical actions and measures, if the disaster continues to deteriorate beyond control, the consequences may be unimaginable.

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