The eruption of Tonga volcano has attracted people's attention to volcanoes. At the junction of the Pacific plate and the Asia-European plate, Japan, which is volcanoes, earthquakes, tsunamis, typhoons, and other natural disasters, is naturally also attracted by people.
In Japan, the largest volcano is Mount Fuji . It last erupted 314 years ago. According to this volcanic activity trajectory, its eruption cycle is about 300 years, so in the 21st century, it is theoretically time for Mount Fuji to erupt again.
There are signs of eruption in Mount Fuji?
After the major earthquake in eastern Japan in March 2011, many volcanoes in Japan erupted one after another.
2014 Otaku Mountain volcano erupted
On September 27, 2014, the famous scenic spot, located about 100 kilometers northeast of Nagoya and about 200 kilometers west of Tokyo, erupted, causing 63 deaths, becoming the biggest volcanic disaster in Japan since World War II .
"Japanese Volcano Fire Prediction Contact Meeting" analyzed that Japanese volcano has entered an active period.
Then Japan Meteorological Agency conducted 24-hour uninterrupted observations on 47 of the 110 active volcanoes in Japan.
Latest data show that the number of craters on Mount Fuji in Japan has increased by nearly six times, and signs indicate that Mount Fuji, which has been sleeping for more than 300 years, is already showing signs of activeness.
How powerful is the eruption of Mount Fuji?
1707 On October 28, 1707, the largest earthquake in Japanese history occurred (scientists speculated that it reached 8.6 magnitude) - Baoyong earthquake . The earthquake hit Tokaido, Kii Peninsula and Shikoku, with more than 20,000 people killed, 60,000 houses collapsed, and 20,000 houses washed away by the tsunami.
Mount Fuji crater is not just one
The aftershock of the Baoyong earthquake continued. More than 50 days later, at around 10 a.m. on December 16, something like white clouds rolled and spread rapidly on the southeast slope of Mount Fuji. This was the beginning of the eruption of Mount Fuji. The volcano then sprayed for more than half a month.
1707, Mount Fuji erupted in Japan, not magma , but 800 million cubic meters of volcanic ash erupted. Volcanic ash covers the surrounding area for up to 100 kilometers. As these ashes accumulate in the area, rain washed the ashes into streams and rivers, filling the rivers and dams. In August 1708, the dam broke, causing mud and volcanic ash to flood the downstream areas, crops to be flooded, and houses, roads and bridges to be destroyed. Countless people were displaced.
A Japanese government study warned that if the Mount Fuji erupted at the same scale as in 1707 (VEI Level 5), up to 750,000 people would be forced to flee the surrounding areas, and caused the large traffic arteries such as the Shinkansen and expressways in Japan to be cut off.
Japanese scientists predict that Tokyo will drop a layer of volcanic ash 2 to 10 cm thick, which will be enough to prevent machinery from operating, and vehicles, ships, and aircraft will not be able to start, which means that people, food, water and other supplies will not be transported for a period of time after the eruption of Mount Fuji volcano.
After the volcano erupts, the air and water sources will be polluted. Inhaling excess volcanic gas can even suffocate.
Mount Fuji
shot on the aircraft, and if the eruption reaches VEI level 6, its power will increase by 10 times. Tokyo is only 100 kilometers away from Mount Fuji. Facing magma and volcanic ash, Tokyo may not be in a good situation. If
reaches VEI level 7, the consequences will be unimaginable and the world will be greatly affected. The Tambora volcano eruption in Indonesia in 1815 killed tens of thousands of people, and caused no summer in Europe and North America that year.
Climate scientist Alan Robock of Rutgers University in New Brunswick, New Jersey, said that if a volcano erupts at level VEI-7 or above, volcanic ash will cover the earth, causing the earth to be unable to accept sunlight for a long time. The earth will enter a super cold period, and a cold current that may last for hundreds of years may affect the earth, which can be called the Little Ice Age.
Of course, the eruption of Mount Fuji may not reach this level, because it takes a long time to brew to reach this level of energy, and Mount Fuji, which sprays once every 300 years, is like regular flood discharge, and the danger is not too great. As for the fact that volcanic eruptions in Japan will cause land sinking, it may be difficult, unless it is a super earthquake.
00000000000 tsunami caused by the 2011 earthquake was as high as 40 meters
So the earthquake and volcanic eruption are the real disaster.
movie "Japan Sinking" tells the story of Japan's final sinking into the Mariana Trench after suffering huge volcanoes, earthquakes and other natural disasters. Maybe this is not an alarmist statement, and it may eventually become a fact in the near future.
Will the Japanese volcanic eruption affect China?
Deputy Director and Researcher of the Institute of Climate and Climate Change of the Chinese Academy of Meteorological Sciences Zhu Congwen introduced that in the past 100 years, there have been three large-scale low-latitude volcanic eruptions, namely Agon Volcano in eastern Bali, Indonesia (on March 17, 1963, killing more than 1,600 people and losing their homes), and Mount Elchiqiong in Chiapas State, southeastern Mexico (on April 4, 1982, causing 19 00 people died, which is about 1.32 trillion US dollars of loss today) and the Pinatubo Volcano in Luzon, Philippines (June 15, 1991, causing 1,202 deaths and 100 million US dollars of loss). "In the winter after their eruption (December to February of the following year), the temperature in most areas of my country except Northeast China and Xinjiang was relatively low."
Indonesian Krakato volcano in a small-scale eruption
This is a climate impact. Other aspects have little impact on our country. The impact of the Japanese volcanic eruption on our country mainly lies in its impact on our coasts caused by earthquakes. Of course, if Japan has a super volcanic eruption, it will not only affect local areas.
