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NASA's GUARDIAN System Catches Tsunamis Before They Strike
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 Team··via nasa.gov