The tsunami caused by the eruption of a volcano in Tonga in the Pacific Ocean caused sea level changes in Portugal in the Azores, Madeira and the Peniche region, the Portuguese Institute of the Sea and Atmosphere (IPMA) announced.
“The highest amplitude signal, about 40 cm, was recorded in Ponta Delgada, the Azores, and this phenomenon was observed on the island of Madeira (measurement 20 cm in Funchal) and on the continent”, with values here generally “less than 20 [centímetros]Except for Peniche where 39 [centímetros],” says the IPMA, in a note posted on its website, on the Internet.
The note explains that “the origin of these records is related to the atmospheric shock wave from the explosion in the volcano, which spread all over the world, creating certain conditions over the oceans that lead to the generation of a tsunami, in this case called meteorology. tsunami of volcanic origin” .
“This tsunami, generated in the Pacific Ocean, spread across various oceans, including the Atlantic, with sea level differences observed at practically all tide gauge stations operating on the Portuguese coast, and differences with amplitudes of less than half a meter,” informs the IPMA. He added that he was “monitoring the development of the situation.”
The eruption of the volcano Hongga Tonga – Hong Hapai, on Friday, on one of the uninhabited islands of Tonga, triggered a tsunami that affected the Pacific Ocean, from Japan to Peru and the United States, with several warnings issued in the region during Saturday.
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