Japanese netizens predict the tsunami faster than the Japan Meteorological Agency and use simple mathematical formulas to accurately calculate the tsunami time- Hong Kong unwire.hk

In this satellite image taken by Himawari-8, a Japanese weather satellite, and released by the agency, shows an undersea volcano eruption at the Pacific nation of Tonga Saturday, Jan. 15, 2022. An undersea volcano erupted in spectacular fashion near the Pacific nation of Tonga on Saturday, sending large waves crashing across the shore and people rushing to higher ground. (Japan Meteorology Agency via AP)

Submarine volcanoes near the Tonga Kingdom in the South Pacific have erupted continuously recently, causing a magnitude 7.4 earthquake and triggering a tsunami. The impact of the eruption even spread to Japan. A few days ago, some Japanese netizens shared on Twitter that they used a simple mathematical formula to calculate the time when the tsunami arrived in Japan, which was very close to the Japan Meteorological Agency’s warning and the actual arrival time of the tsunami.

Japanese Twitter netizen @CaScBaRa published a tsunami prediction post on the 15th, putting the acceleration of gravity “9.8 (m/s^2)” and the average water depth of the Pacific Ocean “4000 (m)” into the formula to calculate the tsunami 720 kilometers in 1 hour The speed of the tsunami is divided by 720 kilometers from the distance between Dongjia and Japan, which is 8,000 kilometers. Finally, it is concluded that the tsunami will arrive in 11.1 hours. Shortly following he posted the post, the Japan Meteorological Agency issued a tsunami warning, which was only six minutes away from the time of the post, and the tsunami did arrive in Kagoshima at 11:55 pm on the 15th, and at 1:23 am on the 16th. Arrive at Wakayama.

I tried to calculate how fast the tsunami caused by the volcanic eruption in Tonga arrived, but I was threatened by the accuracy of the approximate formula … pic.twitter.com/nVSny19j5Y

— Kasumihara @ Madras (@CaScBaRa) January 15, 2022

Although the forecast time proposed by netizens is very accurate, he also left a message at the bottom of the post, saying that his calculation method is still very simple, and there is actually a problem, because this tsunami is different from the general tsunami. “Submarine volcanic eruption and tide level fluctuation” announced by the Ministry of Finance. But being able to roughly calculate such an accurate time, the netizen still said that he was “very excited regarding this unknown situation! (not cautious)”.

source:Twitter

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