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

GPS

GLONASS

GLONASS

GALILEO

GALILEO

BEIDOU

BEIDOU

Earthquake

Earthquake

USGS Tsunami Watch

USGS Tsunami Watch

GDGPS Station

GDGPS Station

About 2022 Tonga Hunga Volcano Eruption

The Hunga volcano on the islands of Hunga Tonga and Hunga Ha’apai erupted on January 15, 2022, producing the largest ionospheric signal ever observed. Atmospheric waves produced by the eruption circled the globe several times.

link to GDGPS

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