Traditional Culture Encyclopedia - Weather inquiry - Will the massive melting of Mount Everest glaciers lead to frequent floods in the middle and lower reaches of rivers?

Will the massive melting of Mount Everest glaciers lead to frequent floods in the middle and lower reaches of rivers?

Will the massive melting of Mount Everest glaciers lead to frequent floods in the middle and lower reaches of rivers? The massive melting of Mount Everest glaciers means that the temperature of the earth is rising, and the flood disaster is not the most terrible. The most terrible thing is that polar glaciers are also melting in large quantities, which will lead to the rise of sea level and directly lead to the flooding of many lands. At the same time, the rise of the earth's temperature will also lead to a series of changes in the earth's environment. The chain consequences of all this are unimaginable. Therefore, we should cherish our mother earth and not let her get sick. The mother is ill and can't protect her children, and the consequences are very serious.

Will massive melting of glaciers lead to frequent floods in the middle and lower reaches of rivers? Most rivers in China originate in the Qinghai-Tibet region, and the water resources in the Qinghai-Tibet region mainly come from the melting water of ice and snow glaciers. If glaciers melt in large quantities, it should have a greater impact on the upstream, right?

The frequent flood disasters in the middle and lower reaches of the Yangtze River are due to the heavy rainfall in the rainy season, and the river can only be diverted after the flood is formed.

Causes of frequent floods in the middle and lower reaches of the Yangtze River: 1. The low-lying plain in the middle and lower reaches is not conducive to flood discharge.

2. It belongs to monsoon climate, with heavy and concentrated precipitation and heavy rain in summer.

There are many tributaries from north to south.

4. The vegetation in the upstream area was severely damaged, resulting in soil erosion.

The downstream of the riverbed is uplifted and silted, forming an aboveground river (Jingjiang reach is particularly prominent, known as "Jiuqu Ileum").

People built fields around the lake, which reduced its area.

The ability of lakes to regulate and store floods is weakened.

Measures: 1. Strengthen soil and water conservation in the upper reaches and plant more trees.

2. In the middle reaches, "cut off the bay and get straight" and dredge the river.

3. Construction of downstream water conservancy projects (strengthening flood control dikes and building reservoirs)

4, improve people's awareness of flood control and self-help ability.

Causes of floods in the middle and lower reaches of the Yellow River (detailed) The summer monsoon is weak this year, and the frontal rain belt has been wandering in the middle and lower reaches of the Yangtze River, which may lead to drought in the north and floods in the south. The flood in 1998 was a strong summer monsoon, and heavy rain fell simultaneously in the north-south direction of the Yangtze River. The simultaneous arrival of water from the north and south tributaries caused the flood.

If the Yellow River is cut off. 1. There is less precipitation in the north this year. 2. Industrial and agricultural water consumption is large. Therefore, the lower reaches of the Yellow River are generally cut off.

Will solar activity lead to floods? What is the activity of the sun and its influence on human beings? [Label: sun, activity, human] Anonymous answer: 1 popularity: 1 solution time: 2008-11-2915: 27 People often say that the sun is the source of everything, and everything grows on it. The sun brings light and warmth to the earth, provides conditions for human survival and creates a beautiful environment for human life. However, solar activities, especially the big bang, do affect and destroy the earth environment, especially the near-earth space environment. For example, the strong particle radiation of the sun reaches the earth, which will destroy the space environment and the test and implementation of modern cutting-edge technologies related to it. Solar X-ray bursts will cause sudden disturbances in the ionosphere of the earth, leading to attenuation or even interruption of short-wave communication. However, no matter how strong the solar activity is, it will not pose a direct and serious threat to our normal ground activities like an earthquake. The energy radiation of the sun and its explosion can be divided into particle radiation and electromagnetic radiation. Their effects on the earth's atmosphere are different. When there is a big explosion on the sun, sometimes a large number of high-energy charged particles are ejected, which is called a solar storm. When these high-energy charged particle streams reach the earth orbit, we call them solar proton events. When these particles reach the polar regions along the earth's magnetic field, people call it a polar cap event. The high-energy charged particle flow will destroy the satellite control system and electronic components, resulting in the failure of the spacecraft control system and sensors, leading to the destruction of the entire spacecraft; Solar high-energy charged particle flow will also threaten the life of astronauts, and strong solar proton events will also pose radiation threats to passengers and crew flying at high latitudes. In addition, the impact of high-energy charged particle flow on the earth will cause changes in the earth's electromagnetic system and magnetic storms, which may lead to the destruction of high-voltage transmission networks and underground oil pipelines in high latitudes. In addition to particle radiation, accompanied by solar flares, strong X-ray radiation will be emitted. We call it X-ray burst or X-ray flare. This extremely high frequency radiation was not observed until the launch of rockets and the appearance of spaceships in the 1960s. Because most X-ray bursts are absorbed by the earth's atmosphere, it is difficult to observe them on the ground. X-ray bursts related to solar flares will disturb the ionosphere of the earth and increase the electron density in the ionosphere. At this time, the short-wave radio signal transmitted by ionosphere reflection will be partially or even completely absorbed, resulting in communication attenuation or interruption. The enhancement of solar ultraviolet radiation will also increase the ionization degree of the earth's ionosphere, thus making the earth's atmosphere expand outward and increasing the resistance to low-and medium-orbit satellites. In addition, does solar activity have any influence on climate, weather and human activities on the ground? It should be said that there is, but compared with the impact on the space environment, it is much weaker and more indirect. Everyone has heard of the "maunder minimum" of solar activity, which was first discovered by the British astronomer Mond and named after it. Mond's research proved that there were few sunspots on the sun during the period from 1645 to 17 15. During this period, the climate in northern Europe is very cold. Textual research by China historians proves that this period is the coldest in human history, and it is called "Little Ice Age". Seismologists in China have also proved that this period is the period with the largest number of major earthquakes in North China. People think that the cold and earthquakes in this period are related to the lack of sunspots on the sun. From 180 1, scientists began to study the relationship between sunspots and droughts and floods on the earth, and found that when there were few sunspots that day, some areas had less rainfall and the ground was dry. However, some later statistical studies showed that when there were many sunspots that day, some areas had less rainfall and the ground was dry. It is hard to believe that there is a direct relationship between surface rainfall and solar activity because of the opposite results obtained from statistics in different regions. From a physical point of view, the influence of the sun on the earth is global, and even if it is related, the sun factor is redistributed through the internal factors of the earth. Solar activity may contribute to human emotions and diseases. The fluctuation of space physical environment coupled with solar activity (energy) and solar-terrestrial energy may affect the physiological functions and diseases of human beings on the ground. Some studies show that the reproduction, development and growth of animals and plants are regulated by solar activities. Some researchers have pointed out that neonatal mortality and the incidence of female diseases are positively correlated with the intensity of sunspot activity. Incidence of some infectious diseases (scarlet fever, diphtheria, dysentery, influenza, etc. ), cardiovascular diseases, eye diseases, etc. Are positively correlated with the intensity of solar activity. However, it should be noted that these effects are not caused by the direct impact of electromagnetic waves and particles radiated by the sun on the ground. Some scientists believe that geomagnetic activity caused by solar storms has a significant modulation effect on human endocrine level, and the human nervous system is very sensitive to geomagnetic disturbance. When the local magnetic activity is strong, the tension of sympathetic nerve in human autonomic nervous system increases, so people's aggressive behavior intensifies, traffic accidents increase and people's judgment errors are on the rise. There are also some scientists and medical scientists who believe that the human body has bioelectricity. EEG, ECG and other testing instruments are also designed accordingly. The bioelectricity of countless cells gathers to form the electromagnetic field of human body. Under normal circumstances, the electromagnetic fields of human body and the earth are in harmony with each other. When the earth's magnetic field is strongly disturbed, it will break the balance between the human electromagnetic field and the earth's electromagnetic field, make some functions of the human body disorder, affect people's emotions and induce diseases. In recent ten years, the solar activity that caused the most drastic and catastrophic changes in the earth's space environment occurred in1March, 989. At the beginning of March, a huge sunspot group appeared on the surface of the sun, and its area was equivalent to the area of dozens of earths. Dozens of intense flare activities in this sunspot group caused 39 sudden interference of intense short-wave communication, of which 15 was partially interrupted and 24 was completely interrupted. The explosion of this sunspot group threw a large number of high-energy charged particles at the earth, causing a disaster in near-earth space, or satellite orbit space. According to the statistics of American Geophysical Data Center, in March of 1989, 46 cases of satellite anomalies were recorded. The solar storm from this sunspot group reached the earth, causing a strong magnetic storm. This intense solar activity caused power failure in most parts of Quebec, Canada for more than 9 hours, affected 6 million residents, and caused the Quebec Power Company to lose 19400 MW of electricity. It is for the above reasons that many countries attach great importance to the serious influence and control of solar activities on the earth's environment. Since the 1960s, the structure of solar-terrestrial space weather forecast has been established, relevant research and forecast services have been carried out, and the International Space Environment Service Center headquartered in the United States has been established. There is a 10 regional alarm center. There are the United States, Canada, Russia, Japan, Czechoslovakia, France, India, Australia, Poland and China. With the rise of China's space industry and the development of national defense communication, China started the research and service of solar activity forecast in the late 1960s, which made beneficial contributions to China's space industry and national defense communication. At present, China is organizing relevant units to formulate the Strategic Plan for Space Weather in China. With the progress of science and technology in China, the solar-terrestrial space environment forecast and service will surely make greater contributions to China's space industry and national defense transportation. But let's not misunderstand, let alone panic. Solar activity will not bring terrible disasters like earthquakes to people who are active on the ground, not to mention the solar explosion that can lead to strong magnetic storms is a rare event. Solar activity is the general term for all activities in the solar atmosphere. Its main manifestations are sunspots, light spots, spectral spots, flares, prominence and so on. Solar activity is sometimes intense and sometimes weak, with an average period of 1 1 year. When the sun activity weakens, it is called a calm sun. At this time, the radio radiation is weak and stable. When the sun is active, it is called disturbing the sun. At this time, the sun will emit a lot of ultraviolet rays, X-rays, particle streams and strong radio waves. When these enhanced radiation from the sun reach the earth respectively, it will cause ionospheric disturbance and hinder or even interrupt ground short-wave radio communication, while long-wave communication will be strengthened; It will cause a large area of aurora and magnetic storm (making the compass shake irregularly and lose the function of indicating direction). Solar activity can also cause abnormal changes in the ground climate, leading to earthquakes, threatening space navigation, and so on. In addition, solar activities are closely related to living things and human beings.

The engineering measures for flood prevention and control in plain areas in the middle and lower reaches of rivers are briefly described. First, like the Three Gorges Project, its primary task is flood control. Second, a large number of trees are planted, which is conducive to soil and water conservation and flood prevention. Third, it is forbidden to cultivate land around lakes and build reservoirs.

What caused the flood disaster in the middle and lower reaches of the Yangtze River? 1. There are many plains in the middle and lower reaches, and the terrain is low and flat, which is not conducive to flood discharge.

2. It belongs to monsoon climate, with heavy and concentrated precipitation and heavy rain in summer.

There are many tributaries from north to south.

4. The vegetation in the upstream area was severely damaged, resulting in soil erosion.

The downstream of the riverbed is uplifted and silted, forming an aboveground river (Jingjiang reach is particularly prominent, known as "Jiuqu Ileum").

People built fields around the lake, which reduced its area.

The ability of lakes to regulate and store floods is weakened.

Why do floods cause infectious diseases? That's because after the flood, the environment will be greatly damaged.

First, the bacteria hidden in the underground layer will be exposed and multiply.

Second, the bodies of people, livestock and poultry will rot and deteriorate after being soaked in flood water, and a large number of bacteria will breed.

Thirdly, human, animal and livestock excreta will also appear on the surface under the action of flood, which is suitable for the growth and spread of bacteria and insects, and will bring bacteria where the flood goes.

In addition, after the flood, people's living, eating and medical conditions will also decline.

The concentration of a large number of victims is easy to cause the concentrated outbreak of infectious diseases, which is also one of the important reasons.

Historically, floods occurred frequently in the lower reaches of Haihe River Basin. Try to explain why the lower reaches of Huaihe River are low-lying. Most of the reasons are caused by sediments deposited in the Yangtze River for hundreds of thousands of years, and the altitude is not high. In addition, water conservancy projects have always focused on the sea rather than the land, and limited financial and material resources can only be invested in coastal defense. In addition, this place is an important saltworks, and the requirements for water conservancy are not high. And for political reasons, there are both elite soldiers and strong generals here, as well as fish and salt. No matter how high the water conservancy and grain output are, the impact is also great and it is difficult to calm down.