JPL GUARDIAN System

2023 Vanuatu Tsunami Example

The map and station plots below are a snapshot of the Vanuatu tsunami on November 22, 2023. For the near-real-time map and station data, go to the home page.

How to Navigate

Draw rectangle on map to select stations, zoom in/out to focus on regions, then click on the station in the sidebar to see realtime slant TEC.

Legend

GPS

GLONASS

GALILEO

BEIDOU

Earthquake

USGS Tsunami Watch

GDGPS Station

About the 2023 Vanuatu Tsunami

On November 22, 2023 at 04:47 UTC, a Mw 6.7 earthquake off the coast of Maewo island (Republic of Vanuatu) triggered a small tsunami, with wave height measured to be ~3cm at a tide gauge in Port-Olry (Republic of Vanuatu). Tsunami-generated ionospheric signatures can be seen, for example, in the link between station KIRI and satellites C006G, GPS57, and E103, or station LAUT and satellites C020G, GPS76, and E103 between the hours of 0530 and 0600 UTC.