Slogans about the danger of rising sea level

In recent years, the impact of sea level rise on the earth has increased significantly. Of course, there are two main reasons for sea level rise: melting glaciers directly lead to sea level rise, and global warming leads to water expansion. Therefore, when the two are added together, the actual rising speed of the Shanghai plane is much higher than the actual situation. At the same time, for some coastal cities, sea level rise may be accompanied by risks such as "sinking", so there is a higher distance between the speed of sea level rise and the basic horizontal line.

This is why many scientists worry and warn that the rising sea level of our planet is affecting coastal cities all over the world, because these areas are more affected by sea level. Compared with inland areas, the pattern of coastal cities may change greatly. They are areas directly affected by sea level rise, and inland areas can wait for some time.

According to Natural Climate magazine, the sea level actually seen by human beings can be said to be far more than this rising speed, and it is much more practical, and many factors are not included. Scientists warn that the current assessment of global sea level rise does not take into account important phenomena affecting coastal areas. The actual sea level rise rate is even more terrible than we know, and the data has told us everything.

In the past 20 years, our earth is heating up on a large scale under human activities, and the glaciers in the north and south poles are melting rapidly. The data calculated by glaciers show that the global sea level is rising at an average rate of about 2.6 mm per year, but this measurement is inaccurate. We didn't take into account that when the sea level rises, the sinking of the world coastline is also happening, which means that our sea level is rising. In fact, coastal cities are also "sinking", which will greatly change the annual increase of about 2.6 mm, far exceeding the actual conclusion, so human beings should be vigilant and rise too fast.

Around the world, the land subsidence in delta cities is very obvious, mainly due to the exploitation of "groundwater", oil exploitation, the construction of upstream dams, flood control, sand mining, mining and so on. The replenishment of sediments was stopped, which accelerated the rise of sea level, far higher than the actual situation. Around the world, about 58% people live in the land subsidence delta. By combining natural and human-induced subsidence, scientists say that the speed of sea level rise is actually four times higher than the global average, with an average annual increase of 7.8 to 9.9 mm (the biggest difference), which is a danger signal.

Obviously, under the background of global warming, the sea level in China is also rising. According to the China Sea Level Bulletin of 20 19, from 1980 to 20 19, the coastal sea level rise rate of China was 3.4 mm/year, which was higher than the global average level in the same period. In 20 19, the sea level in the coastal areas of China was 72mm higher than normal (1993-201year was defined as perennial, and it was 24mm higher than that in 20 18, and it was 1980.

Therefore, the sea level in China is rising rapidly. "New Scientist" magazine once warned the earth's sea level seriously, that is, scientists believe that the global sea level may rise much faster than expected, and several global coastal cities such as new york and Shanghai may be threatened in the future. In other words, coastal cities such as new york and Shanghai are in danger of being submerged, so this is in line with the research of Natural Climate magazine.

Under the influence of human beings on the earth, the pattern of coastal cities has been subverted, sea level rise is approaching rapidly, and human beings have made large-scale changes to coastal cities. Unless human civilization is far away from the earth, we will face such problems sooner or later. As it happens, coastal cities are the most concentrated areas of human activities, so they are quite dangerous.

According to the latest research of Natural Climate magazine, the sea level rise of the world coastline is different from the actual change, and we humans tend to concentrate in coastal urban areas. However, these cities are facing more and more serious problems such as sinking. What we can do now is to expect mankind to jointly alleviate the global climate by reducing the heat emissions generated by burning fossil fuels, that is, to reduce greenhouse gases such as carbon dioxide.

At the same time, after reducing greenhouse gas emissions, our global warming will be alleviated, and the melting speed of glaciers in the North and South Poles will also slow down, so the threat posed by the rise of the earth's sea level will be alleviated to some extent, even if it is submerged, it will not be so fast. Now we have seen that, in fact, in order to slow down the sinking of cities, the Netherlands, Japan, China and other countries have been strictly controlling the exploitation of groundwater, so this can slow down the sinking speed, which is also more scientific.

Generally speaking, the rise of the earth's sea level is a fact, and it is getting stronger and stronger in the context of global warming. Only by slowing down the earth's climate change can human beings completely reverse the speed of sea level rise, so it is up to human beings to do this well.