The shockwave antipode in southern Algeria (image: @weather_models/twitter)
The satellite Meteosat-11, operated by EUMETSAT, detected the shockwave reaching its antipode.
The eruption triggered the air pressure wave passing through the globe and after several hours reached its diametrically opposite point on Earth, located in southern Algeria.
The antipode is the point on Earth’s surface that refers to opposite latitude and longitude differing by 180°.
The shockwave reaches its antipode in southern Algeria (source: Meteosat-11)
対蹠地のほうもMETEOSAT-11で動画化。経路によって伝播速度が違うようで、対蹠地に来るタイミングは微妙にズレてる pic.twitter.com/8b870QXmoQ
— WeatherModels (@weather_models) January 17, 2022
Tonga and its antipode in Algeria (image: geodatos.net)