Beijing time began at noon on January 15, the south Pacific island country of Tonga, its Hong Aha Apay island near a violent volcanic eruption, to the afternoon of January 15, the satellite cloud map on the huge cloud in the area soared, like exploded marshmallow, but this is actually a huge cloud range of hundreds of kilometers, volcanic gas wrapped in smoke and dust rushed to a height of tens of kilometers, some analysis believes that the eruption height of at least 25 kilometers.
As an island country, Tonga has many islands, the volcanic island where the fire erupted this time is uninhabited, and the main population of Tabu Island is about 65 kilometers away from the crater, and there is a Pacific Ocean barrier in the middle, and the possibility of the volcano directly impacting the island is relatively low. However, a tsunami caused by the volcano may have hit the island, and volcanic ash and toxic gases may also affect the island's inhabitants. However, at present, the whole of Tonga has been temporarily missing, and the specific circumstances are not clear.
Tonga's Hong Aha Apay Island is located on the crater of this giant eruption, and the size of the island has been changing frequently due to volcanic reasons. Satellite imagery shows that just before the big eruption at noon on January 15, the island had been broken in two by a previous small eruption, and the middle part had sunk to the bottom of the sea, while after the large eruption, high-definition images were temporarily unavailable due to volcanic ash and other reasons, but according to remote sensing data, the main body of the island had been almost completely destroyed.
Then some netizens have to ask: Isn't it generally said that volcanoes create new land? How did the island disappear instead? It appears that the crater of this volcano is on this island, but in fact, the processed image shows that Tongahun Aha Apay Island is only part of the volcano in the area – the area itself is a huge caldera, and the small island is a small part of the caldera. Before the January 15 eruption, the island collapsed in half due to the eruption, and after the January 15 eruption, the island almost completely disappeared
In the process of the eruption of the volcano, the satellite cloud map also recorded the shock wave stimulated around the volcano during the violent eruption, like a wave spread around, and even spread to China, on the evening of January 15, many places in China recorded short-term fluctuations in air pressure, of course, this air pressure fluctuation will not have any obvious impact, expert analysis believes that the shock wave spreads around the world at the speed of sound
Even meteorological observers in Alaska, the United States, said that in Alaska, about 10,000 kilometers away, a "sonic boom" was observed locally. Overall, this can be said to be an earth-shattering and violent eruption, and it needs further observation whether it will bring the earth into a "volcanic winter".