GATEW – GNSS Augmentation of Tsunami Early Warning

GNSS Augmentation of Tsunami Early Warning (GATEW) refers to the integration of high-rate Global Navigation Satellite System (GNSS) observations into tsunami early warning systems. Real-time GNSS measurements enable precise detection of coseismic ground displacements during large earthquakes, including vertical and horizontal motions that are critical for assessing tsunami generation potential.

In geodesy, GATEW demonstrates the application of high-precision GNSS positioning and real-time data processing for rapid hazard monitoring. By providing near-instantaneous deformation estimates and fault slip information, geodetic GNSS networks enhance traditional seismic-based warning systems and contribute to improved tsunami modeling, risk mitigation, and disaster response.