Causes of global natural disasters
Global warming has led to frequent earthquakes, volcanic eruptions and catastrophic submarine landslides
Global Online News from China Daily: Heat waves are getting hotter, hurricanes are getting fiercer, and oceans are The plane is getting higher and higher. These are warnings to mankind from global warming. But scientists point out that frequent earthquakes are also related to global warming.
The latest scientific discipline to join the global warming debate is geology, according to the Canadian Press. Some geologists explain that climate warming directly causes ice caps to melt, which will release pent-up pressure in the earth's crust and trigger extreme geological accidents, including earthquakes, tsunamis and volcanic eruptions. One cubic meter of ice weighs nearly a ton, and some ice layers are more than 1,000 meters thick. When this weight is removed by melting, the crust springs back to its original shape.
Patrick Wu, a geologist at the University of Alberta in Canada, explained this effect with a vivid example: He pressed the football with his thumb. When the thumb was lifted and the surface pressure on the ball was removed, the football Will return to its original shape. These thick ice layers at the Earth's poles are like a thumb pressing on the Earth, bringing a lot of pressure to the Earth and suppressing the occurrence of earthquakes, but after they melt, they will trigger earthquakes. When an earthquake occurs under the ocean, a tsunami forms. Of course, for the Earth, this recovery process is quite slow because the crust is very hard. For example, the current occasional earthquakes in eastern Canada are actually related to the rebound from the last ice age more than 10,000 years ago. Melting snow in Antarctica and Greenland will have the same impact, but the process will be accelerated by the greenhouse effect.
Patrick Wu also said that after the ice melts, the re-liquefied water will cause sea levels to rise and increase the weight of the seafloor, which may also have an impact on plates deep in the earth.
The earth's crust may be more sensitive than many people imagine. Many previous examples have proven this. For example, after the construction of a dam, the amount of water in the reservoir intercepted by the dam increased, causing earthquakes. Alain Grabinier, a volcano expert at North Carolina State University, said he was initially skeptical when he discovered a link between climate change and volcanic activity along the California coast. However, after checking information in the library for research, he found that the connection between climate change and volcanic activity is particularly obvious in many parts of the world, especially in the Mediterranean region. He said: "The ice melts and the load on the earth's crust is reduced. Under the action of pressure, the magma under the earth's crust is more likely to erupt. This is a volcano."
British geologist Bill Maguire A paper published in the New Scientist magazine also pointed out: "More and more evidence around the world shows that global climate change has affected the frequency of earthquakes, volcanic eruptions and catastrophic submarine landslides. This phenomenon has already occurred in the history of the earth. It has happened many times, and the evidence shows that it is happening again. "1. The decisive factor in climate formation and change is temperature:
Climate is formed when the earth's surface water evaporates due to light and heat and turns into gas. Warm current is one of the main factors forming wind. Vapor rises to high altitudes to form clouds. Dense clouds gather, causing friction and thunder and lightning. Dense clouds turn into rain when encountering cold air, and turn into snow when encountering cold currents. Warm and moist air currents, cold air and cold currents form wind, which determines the climate. Changes, wind, clouds, rain, snow and thunder and lightning are the main phenomena of global climate.
One of the temperatures that forms the climate is solar heat, which determines the equatorial and summer heat and daytime warming. Another type of temperature is space cold, which determines the snow accumulation and night cooling of the Arctic and Antarctic glaciers and mountain peaks.
The light and heat of stars and the coldness of space are the original conditions in the universe. All planets in the universe are affected by these two primitive state factors. Its specific manifestation is the huge temperature difference between night and day on all affected planets. For example, the temperature of the moon during the day is as high as +160 degrees, and at night it is -170 degrees, with a temperature difference as high as 330 degrees. Another example is Mars. The temperature during the day is +420 degrees and at night it is -173 degrees. The temperature difference between day and night is as high as 600 degrees. If such a planet has a large amount of water like the earth, the sky will be filled with water vapor during the day and it will fall at night. Continuous heavy rain or hail will cause extremely bad weather.
Our earth’s temperature is moderate, the climate is stable, and the temperature difference between day and night is small, maintaining the normal existence of water and life. This is mainly due to the existence of four major thermal insulation functions on the earth: 1. Ozone layer, 2. Atmosphere, 3. Ocean water, and 4. Natural ecology.
The ozone layer not only blocks ultraviolet rays and cosmic rays, it also blocks sunlight and heat. The atmosphere has a good heat absorption function. The surface temperature of the sun's heat when shining on the ozone layer is nearly 100 degrees, but when it reaches the land surface through the ozone layer and the kilometer-meter atmosphere, the maximum temperature is only about 30 to 40 degrees. This shows that the ozone layer and the atmosphere prevent most of the sun's heat.
The natural ecology provides oxygen, food, fresh water and a good living environment for life. In addition, the natural ecology can also prevent water and soil from being lost, slow down the air flow, and maintain the humidity of the near-earth air, thus further ensuring The right temperature for survival.
Ocean water occupies most of the area. Water can absorb a large amount of sunlight and heat and turn into gas. It can also absorb cold and turn into rain and snow and return to the earth. This fully illustrates the good regulating effect of water on temperature. The fundamental cause of global climate deterioration is the destruction of the earth's two major thermal insulation functions. One is the destruction of the ozone layer.
Due to the extensive use of fluorine- and chlorine-containing air conditioners and refrigerators by humans, a large number of holes have appeared in the ozone layer, and its heat-blocking effect in the hole areas will be lost. The direct result is that a large amount of solar heat enters the earth, evaporates a large amount of rainwater, produces strong winds and rains, and causes natural disasters such as floods and mudslides. (For example, the floods in many provinces in Jiangnan and Northeast China in 2010, the floods in Pakistan, Australia, the United States and Europe and other countries were all caused by this, and the strong storm in the United States in May 2011 was also caused by this). The second is the destruction of natural ecology. Due to extensive human construction activities and severe desertification of land, natural ecology has been degraded and deteriorated on a large scale. Not only does its ability to support life, provide food and water retaining greatly reduce, its heat preservation function is also greatly weakened. The direct consequence is that the earth will be more affected by solar heat and space coldness. Summers will be hotter, winters will be colder, and the temperature difference between day and night will increase. The hotter the summer, the more likely it is for the land to become dry, prone to sandstorms, and prone to fires. (For example, natural disasters such as frequent severe droughts and major fires in China, the United States, Russia, and Australia in 2010-2011). The colder the winter, the more severe snowfalls and frosts there will be, or the land may become dry in winter. (For example, the extremely cold snow disaster in the so-called drought year in Europe, the severe winter drought in China in 2011, etc.).
Global climate deterioration has endangered the survival of life.
Harmful to life and health. People get flu illnesses more often. Animals are prone to influenza, bird flu, and other seasonal diseases. In particular, animals such as high-altitude birds and shallow-water fish in temperature-sensitive areas can no longer withstand the strong influence of temperature, and a large number of animal groups have died. (In 2011, a large number of animal deaths occurred in the United States alone. For example, on January 4, more than 40,000 dead crabs appeared in Gear Town, USA. On March 8, a million fish died in the port of Los Angeles, California, blocking the port. World Large numbers of animal deaths have also occurred in other areas. For example, hundreds of jackdaw carcasses appeared in Stockholm, Sweden, on January 8, and more than 8,000 turtle doves died in Faenza, a small town in northern Italy. In addition, there were also cases in New Zealand and other places. A large number of fish died).
According to relevant research: dinosaurs perished due to global climate deterioration.
Dinosaurs dominated the earth nearly 100 million years ago. Their huge population and huge appetite prompt them to move like locusts in order to obtain enough food. The migration of such a large population to one place will destroy the ecology of that place and make a large amount of land desertified. The climate will also deteriorate as a result. The fatal weakness of dinosaurs with extremely strong vitality is that they rely on the stable temperature of nature to ensure the hatching of their next generation. The deterioration of the climate will inevitably lead to the instability of hot and cold temperatures, so that the hatching of dinosaur eggs is not guaranteed and they will rot and deteriorate. However, the recovery period from natural damage is much longer than the life span of dinosaurs, and it is even more necessary to get rid of the further destruction of the dinosaur population before it can slowly restore its natural vitality. As a result, the dinosaur population disappeared, and other animal populations that relied on external temperatures to hatch also basically perished. Only groups of animals that hatched at a fetal temperature that is not affected by outside temperatures will reproduce. (There are scientific speculations about other reasons for the demise of the dinosaurs, but they are unconvincing, because those disasters cannot lead to the global extinction of life, and they will not allow The extremely vitality of the earth dominated the dinosaur race and perished).
Global climate deterioration has led to global natural disasters, seriously jeopardizing the normal survival of people and life, and will lead to the natural elimination of human beings. Reason one: Human beings, like other animals, must have oxygen, water, food and suitable temperatures to survive. Two: Human power cannot resist natural disasters. Such as earthquakes, tsunamis, floods, mudslides, severe storms, etc. Faced with these natural disasters, people can only choose to escape and rebuild after the disaster. From 2010 to 2011, the frequency of global disasters showed an intensifying trend.
If humans do not make up their mind to understand correctly and take practical actions and measures, if the disaster continues to worsen to the point where it is difficult to control, the consequences will be unimaginable.
Are you satisfied with the above answer?