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Using GPS satellites to detect tsunamis via ionospheric ionization waves
Global Navigation Satellite System (GNSS) data from NASA’s Global Differential GPS network is used by the GNSS-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) to detect natural hazards.
Natural hazards on Earth’s surface, such as earthquakes, volcanic eruptions, tsunamis, meteoroids, and deep convection events, can cause significant displacements of air that produce vertically propagating atmospheric acoustic and gravity waves. According to JPL, GUARDIAN is currently the only software available and capable of providing multi-GNSS system NRT TEC time series data over the Pacific region and openly sharing it with the public and scientific community. Martire, L., Krishnamoorthy, S., Vergados, P., Romans, L. J., Szilágyi, B., Meng, X., Anderson, J. L., Komjáthy, A., Bar-Sever, Y. E. (2023) The GUARDIAN system - a GNSS upper atmospheric real-time disaster information and alert network, GPS Solutions 27(32).
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