Eye on the Ionoshere

GPS Solutions

, Volume 11, Issue 2, pp 139-144

First online:

Medium-scale traveling ionospheric disturbances observed by GPS receiver network in Japan: a short review

  • Takuya TsugawaAffiliated withMassachusetts Institute of Technology Haystack ObservatorySolar-Terrestrial Environment Laboratory, Nagoya University Email author 
  • , Nobuki KotakeAffiliated withSolar-Terrestrial Environment Laboratory, Nagoya University
  • , Yuichi OtsukaAffiliated withSolar-Terrestrial Environment Laboratory, Nagoya University
  • , Akinori SaitoAffiliated withGraduate School of Science, Kyoto University

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Medium-scale traveling ionospheric disturbances (MSTID) are wave-like perturbations of the ionospheric plasma with wavelengths of several hundred kilometres and velocities of several hundred metres per second. MSTID is one of the most common ionospheric phenomena that generally induce the perturbations of ionospheric total electron content (TEC) by ∼1016 electron/m2, which corresponds to ∼54 ns (16.2 cm) delay at GPS L1 signal. In the past decade, several new characteristics on MSTIDs have been revealed by the TEC observations using the dense GPS receiver network in Japan. In this paper, we provide a short review of these new observations and summarize the morphological characteristics of MSTIDs in Japan.


Ionosphere Traveling ionospheric disturbance Atmospheric gravity wave Polarization electric field Total electron content High resolution GEONET