Volcanic eruption on the island of Tonga

The volcanic eruption on Tonga shows the sensitivity of the earth's atmosphere and the interconnectedness around the globe.

On Saturday, its explosion could be heard several thousand kilometers away, including in Australia and New Zealand.

Although no acoustic signal was heard in Austria, the arrival of the pressure wave could still be measured. The pressure wave reached us with a delay of around 16 hours and was recorded by numerous barometers.

The rise in pressure and a rapid drop thereafter can be clearly seen in the graphic below. Extracted from the raw data, the minute values ​​of the stations Sonnblick and Kolm-Saigurn are displayed. The times given are in UTC (universal time coordinated).