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NASA's GUARDIAN System Catches Tsunamis Before They Strike
A new NASA technology called GUARDIAN uses GPS signals bouncing off the ionosphere to detect tsunamis minutes earlier than conventional seafloor sensor systems, potentially giving coastal communities crucial extra time to evacuate.
Key Takeaways
- GUARDIAN uses GPS signal distortions in the ionosphere to detect tsunamis before seafloor sensors can transmit warnings
- System could provide 10-15 minutes of extra warning time for communities near tsunami epicenters
- Technology requires no new hardware — it piggybacks on existing global GPS infrastructure and dense ground receiver networks
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DT Editorial AI··via nasa.gov