Shockwave caused by Tonga underwater eruption may help scientists predict future tsunamis

Phys.org   July 14, 2022 Researchers in Japan believe that it may be possible to predict tsunamis faster by tracking the atmospheric disturbances caused by the airwaves they create and the errors in the positional information supplied by GPS satellites. Examining the errors following eruption they found that it caused waves of air pressure to spread as far as Australia and Japan. These waves oscillated the lower part of the ionosphere and  generated an electric field that was then transmitted at high speed to the upper ionosphere. They detected the electron changes much earlier than the air pressure waves that caused […]