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When Hunga Tonga-Hunga Ha‘apai, a mostly submerged volcanic cauldron in the South Pacific Ocean, exploded on 15 January, it unleashed a blast perhaps as powerful as the world’s biggest nuclear bomb, and drove tsunami waves that crashed into Pacific shorelines. But 3 hours or so before their arrival in Japan, researchers detected the waves of … Read more
Editor’s Note (1/18/22): On January 15 the eruption of a volcano near Tonga triggered a far-ranging tsunami. This story about detecting tsunamis created by earthquakes is being republished in light of this event. Buoys operate as today’s state-of-the-art tsunami-detection system. Seismic data can tell officials that an underwater earthquake has occurred, but strategically placed floating … Read more
Back in 2018, researchers were able to study the moment brain death becomes irreversible in the human body for the first time, observing the phenomenon in several Do Not Resuscitate patients as they died in hospital. For years, scientists have researched what happens to your brain when you die, but despite everything we’ve found … Read more
The movement of seawater in a tsunami generates a magnetic field that travels ahead of changes in sea level, which could help us predict and prepare for it Earth 24 December 2021 By Leah Crane The aftermath of a 2010 tsunami in Chile, which was analysed in the new study International Federation of Red Cross … Read more
Seconds count when it comes to tsunami alerts, and scientists may have found a warning sign that can be detected even earlier than sea level rises: the magnetic fields created by these gigantic rushes of waves. Even though the difference might only be a minute or two, that can save lives. Magnetic field data … Read more
The south-central coast of Chile could be more vulnerable to tsunamis than the historical record suggests. Geological research among the tidal marshes of Chaihuín has now revealed the fallout of a long, high wall of water that struck land in 1737. Written documents from the time, however, describe no such wave. “There are records … Read more