January 21, 2020

Nature is furious: why are there more natural disasters?

Nature is furious: why are there more natural disasters? Just a few months ago, the media was full of disturbing news about the Siberian fires, the economic damage from which amounted to more than 14 billion rubles. At the end of August 2019, hurricane Dorian swept across the East coast of the United States, killing 50 people, not counting the 76,000 who were left homeless. The devastating earthquake swept through the province of Ambon in Indonesia, and Albania. In the fall, Typhoon Hagibis hit Japan. And now the whole world is sympathetically following the news from Australia, where fires have claimed the lives of 27 people and more than a billion wild animals.
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And these are just disasters over the past year. How many major disasters have shaken the world in recent years? Hurricane Katrina, which nearly destroyed New Orleans, and the 2011 earthquake and tsunami in Japan that killed more than 15,000 people… 
And this is not the limit. Scientists report that the number of natural disasters is growing steadily. For example, from 2000 to 2017, six earthquakes of magnitude 8 or more were recorded. Whereas for the entire XX century there were 10 such cases, and for the entire XIX – only seven. This means that there are still many challenges ahead for humanity. But what was the reason for this? 

The first reason, the main one 

Scientists see global warming as the main reason for the growth of natural disasters. Rising temperatures lead to disastrous consequences.
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Here's how Alexey Karnaukhov, a senior researcher At the Institute of Biophysics of the Russian Academy of Sciences and a climatologist, explains the increase in the number of earthquakes: "...we are experiencing global warming, melting glaciers and increasing ocean levels, there is a redistribution of pressure on the continental lithospheric plates. All processes that have been slowed down are beginning to accelerate."
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Warming has also affected the development of fires in Australia, which are continuing right now. Fires are not uncommon for this continent with its high temperature and aridity. Usually they can be kept under control. However, the unusually dry weather caused the fire to spread with incredible rapidity. 
The heat also led to an increase in dry thunderstorms formed at temperatures above + 28°. Their difference from the usual-lightning flashes in the complete absence of precipitation or reduced their number. Dry thunderstorms are called "forest killers". Often they are the cause of summer fires.
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Finally, an increase in water temperature leads to the formation of hurricanes. They form as cyclones if the water temperature exceeds 26°C. 

The second reason is anthropological 

Humanity has somehow had a hand in every cataclysm in recent years. After all, global warming is a direct consequence of human activity. But then the impact is not indirect, but direct. 
So, one of the reasons for the Siberian fires was called arson in order to hide deforestation. 
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Another reason is the reduction in the number of foresters. Since 2006, their number has decreased from 70,000 to 12,000. This reduced the likelihood of a timely response to forest fires. 
Finally, such huge losses were caused by the fact that most of the fires occurred in "control zones". It is officially allowed not to take any measures in relation to these zones if they are far from populated areas, or if it is considered economically impractical to extinguish a fire here. All this led to the fact that, according to Greenpeace, Russia lost 5.4 hectares of forests.
The real damage is much greater, experts say. During the fires, tens of millions of tons of carbon dioxide were released into the air, which will only accelerate global warming. Scientists predict an increase in air temperature in 2020 by 6°C. whether their forecast will come True, and what promises for the planet such a jump in temperature, we will find out in the next 12 months.

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