The submarine volcano Hunga Tonga-Hunga Ha'apai (Hunga Tonga-Hunga Ha'apai) in the South Pacific island country of Tonga erupted last Friday (14th), and the local tsunami issued a second tsunami yesterday (15th). warn.
Due to the amazing power of the eruption, not only the volcanic ash was clearly photographed by satellites, but countries far away from Tonga, including Japan, the United States and Canada, also issued tsunami warnings, and a tsunami also occurred in Japan.
The Facebook page "Hong Kong Underground Observatory" posted a post last night, stating that the weather station of the Hong Kong Observatory also detected related impacts. "There was a sudden increase in air pressure in various districts of Hong Kong at 8 pm," which is believed to be affected by the shock wave of the volcanic eruption.
The Hong Kong Observatory posted on its Facebook page today (16th) that the recorded pressure anomaly was indeed caused by a volcanic impact, but it will not affect Hong Kong, and the water level in Hong Kong has not changed significantly.
An underwater volcano erupted in Tonga, a Pacific island country, on January 15. The Japanese weather satellite "Sunflower 8" captured the moment of the eruption.
(AP)
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An underwater volcano erupted in Tonga. After the local government issued a second tsunami warning the day after the eruption, Tonga was subsequently hit by a 1.2-meter-high tsunami. Short videos circulating on the Internet showed that sea water poured into residential buildings, and people rushed to avoid The situation is terrifying.
The "Hong Kong Underground Observatory" issued a document at 11:00 last night, mentioning that "Affected by the shock wave of the eruption of the submarine volcano in Tonga, the air pressure suddenly rose in various areas of Hong Kong at 8:00 p.m., and this phenomenon was also measured by the Prince's Weather Station. ".
It can be seen from the "Time Series of Mean Sea Level Pressure of Various Districts in Hong Kong in the Past 24 Hours" provided by the Hong Kong Observatory, the weather stations in all districts can see that the pressure suddenly increased from 1021 hectopascals to nearly 1023 hectopascals at around 8 o'clock last night. Pahenka, and then dropped sharply to between less than 1020 to 1021 hectopascals.
Pressure surges were recorded in many parts of Hong Kong at the same time▼ ▼ ▼
The Hong Kong Observatory also posted on the Facebook page, mentioning that the shock wave generated by the submarine volcanic eruption in Tonga was then transmitted to the distant place through the atmosphere. Even if Hong Kong was 9,000 kilometers away, abnormal air pressure was recorded, but Hong Kong would not be affected by it. .
The volcanic eruption also brought tsunamis to the Pacific region. The water level in Amami, Japan, rose by 1.2 meters, while the water level in Hong Kong did not change significantly.
The same scene: The Observatory received an earthquake report in the early morning. Citizens in many districts were frightened and woke up. Four places in Hong Kong were the epicenter
The Observatory received earthquake reports early in the morning, and citizens in many districts were shocked to wake up. Four places in Hong Kong were the epicenter of the earthquake
Hong Kong Earthquake?
The Observatory announced on April 2, 2021 that a magnitude 3.7 earthquake occurred near the coast of southeastern China at 5:40, that is, about 23 kilometers west-northwest of Heyuan City, Guangdong Province, and about 180 kilometers north of Hong Kong.
Many netizens asked "Did anyone feel the earthquake" on social networking sites or discussion forums, saying that it lasted for about 4 to 5 seconds, and some people said that they thought they were thinking too much when they felt the shaking, "I have never thought that there was an earthquake in Hong Kong. ".
In fact, there are many earthquake records in Hong Kong in the past, and there are even earthquake epicenters in the territory!
According to the picture, you can see the record of 8 times Hong Kong became the epicenter▼▼▼
+8
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