What will happen to the earth if the sea level rises by 500 meters? Can you talk about it?

Due to global warming and the melting of polar glaciers, the sea level has risen by about 24 cm in the past 100 years. So if the sea level suddenly rises by 500 meters, will the earth be submerged? There is a lot of ice on the earth, but according to calculations, even if all the ice melts overnight, it will only cause the sea level to rise by about 70 meters. This will flood all coastal cities, and more than 3 billion people will leave their homes for higher ground. So it is impossible for the ice on the earth to raise the sea level by 500 meters unless it is increased by 7 times.

Once the sea level rises by 500 meters, the disaster is absolutely devastating. Compared with such disasters, tsunamis and floods are nothing at all. So can such a disaster drown the earth? The average elevation of land on the earth is about 840 meters, so many places will not be submerged, but Australia will sink completely and be covered by sea water for 200 meters. Like him, most of Europe will be submerged, and many countries such as Denmark, the Netherlands, the United States, Japan and Canada will sink to the bottom of the sea. Perhaps only some peaks will emerge from the sea, and coastal areas will prosper.

At this time, Africa will become the first choice for human immigrants. This continent is located at an altitude of 600 meters and will not be submerged by the sea. Our country, China, has a high altitude, especially on the plateau. By then, we will become the largest and most prosperous country in the world. But all this is not the end, but the beginning. As coastal floods engulf cities and countries, billions of people may die, and a few survivors will go to higher altitudes, but the disaster will not end there.

Melting glaciers and diluting seawater will cause some ocean currents to stop flowing, and the average temperature of the earth will drop directly, which may even lead to the Little Ice Age. With the sea rising 500 meters, there is almost nothing to eat, and the barren land can't grow enough food. Animals on land are drowned, and marine life will not be spared, because they are used to living in seawater with high salt concentration. Once the glacier melts, it is seawater, so most marine life will die, even. At the same time, there are water resources. Seawater will pollute groundwater system and a lot of fresh water. Unless the seawater desalination system is applied on a large scale, we can only watch the seawater die of thirst alive. At that time, the earth was a well-deserved blue planet, almost completely covered by sea water.