GPS satellites may help warn of tsunamis
Tsunami waves are low in deep water but can travel at the speed of a jet, up to 800 kilometres an hour in a deep sea, and as they enter shallow waters, they slow down, growing in height.
Tsunami waves are low in deep water but can travel at the speed of a jet, up to 800 kilometres an hour in a deep sea, and as they enter shallow waters, they slow down, growing in height.
