Nasa tests novel approach to detect tsunamis

LOS ANGELES, US - Scientists at the US National Aeronautics and Space Administration (Nasa) are testing a novel approach to detect tsunamis by the rumble they make in the atmosphere, the agency said on Wednesday, reported Xinhua.

The new hazard-monitoring technology, called Guardian (GNSS Upper Atmospheric Real-time Disaster Information and Alert Network), uses GPS signals to go wave-hunting in the Pacific Ring of Fire. The new system sifts the signals for clues that a tsunami has arisen somewhere on Earth.

While navigation tools usually seek to correct for ionospheric disturbances, scientists can use them as a lifesaving alarm bell, noted Léo Martire, a scientist at NASA's Jet Propulsion Laboratory in Southern California developing Guardian.

"Instead of correcting for this as an error, we use it as data to find natural hazards," Martire said.

Guardian's long-term objective is to augment early warning systems, according to Nasa. - BERNAMA-XINHUA