Mt. Fuji: A symbol of beauty and danger.
Mt. Fuji, a national treasure of Japan and a wonder of the world. Towering into the sky and majestic, it is a geographical indication of Japan and a spiritual symbol of the Japanese people. It contains a long history and rich culture, which has been the inspiration and yearning of countless artists and tourists. However, this beautiful volcano also hides great dangers. It is one of the largest active volcanoes in the world and has erupted many times, causing numerous disasters and **. If Mt. Fuji erupts again, what kind of impact will it have on Japan and the world, and will Japan be destroyed?In this article, we will discuss this topic of interest from four aspects: the conditions and possibility of the eruption of Mt. Fuji, the power and scope of the eruption of Mt. Fuji, the countermeasures and shortcomings of Japan and experts, and the impact of the eruption of Mt. Fuji on Japan and the world.
Eruption conditions and possibilities of Mt. Fuji.
Volcanic eruptions are natural phenomena in which magma from the Earth's interior erupts to the surface through volcanic craters. There are two main aspects to the eruption conditions of a volcano: the internal pressure of the volcano and the external **.
The internal pressure of a volcano refers to the pressure of magma in the magma cavity below the crater, and when the magma pressure exceeds a certain threshold, it causes the crater to break and form a volcanic eruption. The pressure of magma is affected by factors such as the structure of the volcanic body, the viscosity of the magma, the temperature of the magma, the gas content of the magma, etc.
External** refers to the area around the volcano, when the **wave is transmitted to the volcanic body, it causes the magma in the magma cavity to shake and move, thus promoting or triggering the eruption. **Factors such as intensity, frequency, distance, and direction will affect the eruption of the volcano.
According to the research of Japanese experts, Mt. Fuji has now met the conditions for an eruption.
On the one hand, the internal pressure of Mt. Fuji has reached 16 megapascals, several times higher than the pressure recorded before the outbreak in 1707. This equates to 16 tons of weight per square centimeter, which is more than 10 times that of a normal volcano. This shows that the magma inside Mt. Fuji has accumulated a huge amount of energy and could erupt at any time.
On the other hand, the frequent occurrence of ** in the area around Mt. Fuji, especially the Great East Japan Mass** in 2011, caused a huge impact on Mt. Fuji. It is estimated that the East Japan Dai** added 160,000 tons to the internal pressure of Mt. Fuji, equivalent to the weight of a Boeing 747 aircraft. This makes the crater of Mt. Fuji more unstable and more prone to rupture.
According to statistics, Mt. Fuji erupts every 120 years or so on average, and it has been 315 years since the Great Hoei eruption in 1707.
This means that Mt. Fuji has entered a high-risk period. According to experts, there is a 70% chance that Mt. Fuji will erupt in the next 30 years. This is a very high probability and deserves our high vigilance and attention.
The eruption power and area of Mt. Fuji.
The eruptive power of a volcano refers to the amount and intensity of energy and matter released during an eruption. The eruption power of volcanoes is mainly reflected in four aspects: volcanic ash, pyroclastic flows, and secondary disasters.
* Refers to the sudden release of huge amounts of energy from the crater, forming shock waves and hot gases. The power of ** is divided into eight levels, starting from the fourth level, and its power is already equivalent to an eight-level large**. The eruption power of Mt. Fuji is generally between four and six, but it is possible to reach seven or even eight levels. In the event of a magnitude 7 or 8 eruption, a devastating impact would be devastating for hundreds of kilometers around Mt. Fuji, and countless lives and property would be reduced to ashes.
Volcanic ash can cause harm to the respiratory system of humans, animals and plants, and also affect the normal operation of transportation, communications, electricity and other infrastructure. Mount Fuji's volcanic ash can travel thousands of kilometers away, covering much of Japan and even affecting neighboring countries and other continents. Volcanic ash can reduce air quality, lead to an increase in respiratory diseases and lung infections, and also increase the risk of heart disease and stroke. Volcanic ash can also impede the flight of aircraft, causing flight cancellations or delays, affecting international and domestic travel and**. Volcanic ash can also damage power and communication networks, causing power and signal interruptions, affecting the transmission of information and security.
Pyroclastic flows can reach speeds of up to 200 kilometers per hour and temperatures of up to 1,000 degrees Celsius, making them one of the deadliest hazards in volcanic eruptions. Pyroclastic flows can wash away all obstacles, including buildings, bridges, roads, forests, farmland, etc. Pyroclastic flows can also trigger secondary disasters such as landslides, mudslides, and floods, further expanding the scope and extent of disasters. The pyroclastic flow of Mount Fuji threatens mainly the north and south sides of Mount Fuji, as well as the Fuji Five Lakes area, which is an important tourist and agricultural region in Japan and the core area of Mount Fuji's World Heritage Site. If pyroclastic flows occur on Mt. Fuji, these areas will suffer irreparable damage.