Japan’s Mount Fuji will indeed receive relatively high attention in 2022, and there have been many reports of signs of the volcano’s activity. Of course, in 2022 we also see some survey data, such as: a red flag on Mount Fuji in Japan, and the number of craters has surged – an increase of nearly 6 times. So, this shows that a certain transformation is taking place on Mount Fuji in Japan.
Of course, although Mount Fuji in Japan appeared Signs of activity, but it does not mean that it is about to erupt. Japan’s Mount Fuji has been sleeping for more than 300 years, and has been in this state of “active and inactive”.
But it is an active volcano, it may erupt at any time, or it may If it does not erupt for a long time, humans cannot accurately predict it. Therefore, everyone said that there may be an eruption of Mount Fuji in Japan, and it can only be established on the basis of “possible”.
However, Mount Fuji in Japan has received attention. At that time, there were also active volcanoes in our country, which also caused many people to worry about whether the Changbai Mountain volcanic group in China would be unstable, whether there would be any changes, and the possibility of eruptions. People’s hot discussion, let’s take a look at the situation.
Changbai Mountain Volcano Group
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The Changbai Mountain Volcanic Group is located in the Changbai Mountain region of my country, and there are more than 100 volcanoes distributed throughout the Changbai Mountain area. According to the survey data, the largest crater is about 2,600 meters above sea level, with a diameter of 4.5 kilometers, a funnel-shaped crater, and a depth of more than 800 meters. From the perspective of appearance, it is dominated by top cone volcanoes.
and the area where the entire volcanic group extends It is also relatively large, a composite site of the Yalu River fault extending northeastward and a giant zonal structure. Therefore, it can be regarded as a large volcanic group area.
And this volcano is also a famous “dormant volcano”, which is located in In the area east of the Dunhua-Mishan fault on the easternmost side of the Northeast, if there are signs of plate activity, eruptions may also occur. This feature is somewhat similar to Mount Fuji in Japan, but there are also different points.
Japan’s Mount Fuji also belongs to the plate junction area , at the “intersection” of the Amur plate, the Okhotsk plate and the Philippine Sea plate, and at the same time, it also connects the junction area of Japan’s northeast island arc, southwest island arc and Izu-Ogasawara arc.
Therefore, the area of Mount Fuji in Japan is relatively complex, and the area of Changbai Mountain volcanic group is relatively complex. Slightly better, that’s about it.
Is the Changbai Mountain volcano stable?
The eruption history of Changbai Mountain is also relatively long, and it evolved from the crust in the Changbai Mountain area. Look, it’s been going on for about 3.2 billion years, so it didn’t happen in an instant. And it did not erupt on a large scale because it was in a dormant state. According to historical records, since 1597, the Changbai Mountain volcano has had four small-scale intermittent activities.
Among them, Changbai Mountain erupted in 1668 and 1702. According to the recorded situation, the strength is slightly stronger, because 2-4 cm of volcanic ash was dropped from 140 kilometers away, and the estimated scale of the eruption ≈>VEI2. After this eruption , there is no record of a larger eruption.
In response to the Changbai Mountain volcano In 1997, China implemented a key observation project, and the “Ninth Five-Year Plan” key project “Monitoring and Research on Several Active Volcanoes in Modern China” was launched.
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Then, after research, it was found that Changbai Mountain is a dormant active volcano, although dormant. It has been more than 300 years, but it is not uncommon for volcanoes to erupt again after being dormant for hundreds of years. At the same time, geophysical detection shows that there are signs of the existence of crustal magma sacs under the Tianchi Lake in Changbai Mountain, so there is the possibility of eruption.
In 2012, China once again explained the Changbai Mountain volcanic area, only However, many people became nervous when they saw what the Japanese professor said. That is, Taniguchi Hiroshige, an honorary professor at Tohoku University in Japan, once published research results, saying that due to the impact of the great earthquake in Japan last year, the probability of Changbai Mountain volcanic eruption in the next 20 years is 99%. This is really “terrifying”, very scary.
But what are the facts? That is not so exaggerated, and there is no sign of the existence of crustal magma sacs, as everyone said. But that doesn’t mean it will continue to change.
In this regard, a relevant person from the Changbai Mountain Management Committee said that the China Earthquake Administration . Since 1997, Jilin Provincial Earthquake Administration has established a volcano monitoring station in Tianchi, Changbai Mountain, to study and monitor the volcanic activity of Changbai Mountain from the aspects of digital seismic monitoring network, fixed-point deformation observation system, GPS mobile observation network, and geochemical observation network. Ended the situation of undefended Changbai Mountain volcano.
From the observation results, Changbai Mountain No signs of volcanic recovery have been found yet, that is, there has been no change, and everyone’s worries are superfluous.
While it is true that there has been a massive shift in activity at Mount Fuji in Japan, This does not mean that there is activity in our country’s volcanoes, it is completely out of nothing. When the report appeared on Mount Fuji in Japan, I also saw a lot of people talking about the Changbai Mountain volcano in China. There is no need to worry. my country is monitoring it at any time. This is the general situation.
Summary
An active volcano is indeed a possibility of another eruption. Although humans cannot accurately predict the time of the next volcanic eruption. However, through the monitoring of volcanoes, changes and other changes, it is also possible to find certain signs of volcanic activity. Mainly because most volcanoes experience “volcanic earthquakes” before each eruption. So, after finding such signs of activity, it is possible to know that the volcano may be erupting.
While our country is very concerned about the volcanic group of Changbai Mountain Monitoring has not found any signs of volcanic activity, so it is impossible for an eruption to occur. At least based on the known data, there has been no change. This is a situation about the Changbai Mountain volcanic group. What if there is an eruption?
From the perspective of the largest eruption in Changbai Mountain – it occurred between 910 and 1400 Year (1199 in the literature, 1026 in the ice coreYear, 14C records 969 and 1215, the eruption time is different, so there is no way to verify).
In terms of scale, this time The eruption situation is indeed not low. After the eruption, the impact of volcanic ash is not low. The volcanic ash settled 2-6 centimeters in Hokkaido, Japan, 1,000 kilometers away, and the volcanic debris destroyed forests up to 5,000 square kilometers, causing a huge environmental disaster. It was one of the largest volcanic eruptions in the world in two thousand years.
So, if it erupts again , the impact on Japan and other countries may still be the biggest. From the perspective of atmospheric circulation, it is mainly easterly activities, so basically the impact on my country will not be too great.
It’s just that it may have a stronger impact on people in the area around the volcano, We will explain this from the historical situation, so you can just look at it. Anyway, the thing to remember is that the Changbai Mountain volcano has no signs of activity, and it has nothing to do with Mount Fuji in Japan.