Tsunamis aren’t just bigger-than-average waves. Triggered by undersea earthquakes or volcanic eruptions like the one in Tonga, they are fast, massive and potentially destructive. Here’s why.
Australians tend to be fairly relaxed about the tsunami risk. But warnings from authorities to stay away from foreshore areas should not be ignored.
Three major earthquakes, including one magnitude 8.1 shake, ruptured along the Tonga Kermadec subduction zone, the longest such system on Earth.
Indonesia has a warning system for tsunamis generated by earthquakes – but not volcanoes.
A tricky kind of earthquake that happens in the soft rock of the ocean floor causes much larger tsunamis than their magnitude would predict. New research pinpoints a way to identify the danger fast.