Jakarta, CNN Indonesia —
Experts issue a new study related to the ability to detect tsunami earlier than the magnetic field. Changes in the magnetic field can be a reference before sea level turns into a tsunami.
The scientists said the discovery made it possible to issue a tsunami warning early on before the tsunami occurred and reached land. The research has been published in the Journal of Geophysical Research: Solid Earth.
As is known, tsunami waves produce a magnetic field. The magnetic field can be used to predict the height of the tsunami waves. According to experts, only a few centimeters of wave height can be detected.
How early the magnetic field can be detected depends on the depth of the water. The researchers found the initial arrival time was about one minute, before the sea level change was 4,800 meters deep.
The figures produced by the magnetic field are used as a benchmark for a tsunami in the middle of the sea.
“The magnetic field data can be fed into future tsunami predictions and warning systems, so that information to the public more quickly in advance is finally prepared and avoids going to the highlands,” said geophysicist Zhiheng Lin, from Kyoto University in Japan. Science Alert, Friday (24/12).
Experts try to compare vertical and horizontal activity in the magnetic field as an indication of sea level change, they are able to predict sea level changes quickly and accurately and estimate the magnitude of the tsunami.
Experts explain this new study is real and very useful in the future. Experts have studied several tsunami events such as the tsunami in Samoa in 2009, and one year later when the tsunami occurred in Chile.
“I think the goal is your ability to model tsunamis. You can predict which areas might need to be warned and how badly the tsunami will hit certain places,” said Neesha Schnepf, a geomagnetic researcher at the University of Colorado citing phys.org.
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