Ionospheric GNSS Total Electron Content for Tsunami Warning

Jann Yenq Liu, Chi Yen Lin, Yu Lin Tsai, Tien Chi Liu, Katsumi Hattori, Yang Yi Sun, Tso Ren Wu

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Tsunami waves can induce tsunami traveling ionospheric disturbances (TTIDs) of the total electron content (TEC). In this study, we examine the TEC derived by ground-based receivers of the global positioning system (GPS) and identify TTIDs induced by 2004 Indian Ocean tsunami. Simulations of the COMCOT (Cornell multi-grid coupled tsunami) model and analyses of the circle method, the ray-tracing technique, and the beam-forming technique are used to show that TTIDs can be quickly detected and confirmed after the tsunami occurrence. Finally, the ionospheric TEC derived by existing ground-based GNSS (Global Navigation Satellite Systems) receiving stations is demonstrated to be useful to support the tsunami early warning system.

Original languageEnglish
Article number1941007
JournalJournal of Earthquake and Tsunami
Issue number5-6
StatePublished - 1 Oct 2019


  • GPS
  • TEC
  • total electron content
  • tsunami traveling ionospheric disturbance
  • TTID


Dive into the research topics of 'Ionospheric GNSS Total Electron Content for Tsunami Warning'. Together they form a unique fingerprint.

Cite this