New approach to early warning system for tsunamis

Scientists from the Sapienza University of Rome have developed a new system to detect tsunamis in advance.

This method uses the Global Positioning System (GPS) and other satellite navigation systems, followed by the irregularity of the ionosphere where ions and free electrons reflect the electromagnetic waves of the atmosphere. Scientists give this system the name ‘VARION’. The effect created by the tsunami waves in the atmosphere is followed with this new method.

The ionosphere, covering 80 km to 1000 km of the atmosphere, activates atoms and molecules of atmospheric gases with ions. The natural combination of Earth’s magnetic field seen in the northern lights and the resultant interaction of the charged particles coming from the Sun can be seen as the best example of this overhead phenomenon.

When the tsunami occurs in the ocean, the water particles it carries suddenly become dense and sticky. The waves also compress and expand the air, which creates motion in the ‘internal gravitational waves’ in the atmosphere.

The new approach, VARION, works with the algorithm developed by Giorgio Savastano, Ph.D. student at the Sapienza University. Savastano said that VARION is an important contribution to the future of early warning systems for tsunamis. Stating that the great tsunamis are rare, Savastano explained that VARION would be able to measure through real-time different data algorithm, which would provide new contributions to the tsunami warning system research. They are trying to adapt the algorithm to GPS systems in order to reach 230 different global satellite navigation systems.

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