New hazard-monitoring technology uses GPS signals to go wave-hunting in the Pacific Ring of Fire. GUARDIAN’s long-term objective is to augment early warning
Triggered by earthquakes, undersea volcanoes, and other Earth-shaking forces, tsunamis can devastate coastal communities. And when it comes to providing advance warning, every second counts. Scientists at NASA’s Jet Propulsion Laboratory are testing a novel approach to detect – from the far reaches of the atmosphere – the ocean’s deadliest waves. , the experimental monitoring system taps into data from clusters of GPS and other wayfinding satellites orbiting our planet.
While navigation tools usually seek to correct for such ionospheric disturbances, scientists can use them as a lifesaving alarm bell, noted Léo Martire, a JPL scientist developing GUARDIAN. “Instead of correcting for this as an error, we use it as data to find natural hazards,” Martire said.The technology is still maturing, said Martire, who co-chairs a task force within the United Nations’ that is exploring the use of navigational satellite systems to enhance early warning strategies.
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