Japan Geoscience Union Meeting 2018

Presentation information

[EE] Evening Poster

P (Space and Planetary Sciences) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM14] Recent Advances in Ionosphere Observation and Modeling for Monitoring and Forecast

Thu. May 24, 2018 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

convener:Charles Lin(Department of Earth Sciences, National Cheng Kung University), Yang-Yi Sun(China University of Geosciences, Institute of Geophysics and Geomatics)

[PEM14-P02] Longitude variations of medium-scale traveling ionospheric disturbances from GPS observations

*Fuqing Huang1,2, Yuichi Otsuka1, Jiuhou Lei2 (1.Institute for Earth-Space Environmental Research, Nagoya University, 2.School of Earth and Space Sciences, University of Science and Technology of China)

Keywords:Longitude variation, MSTIDs, GPS TEC

More than ten small Global Position System (GPS) networks located at middle latitude of both hemisphere with different longitude selected from International GNSS Service (IGS) were used to investigate the global longitude variations of medium-scale traveling ionospheric disturbances (MSTIDs). These networks can provide the total electron content (TEC) over the global major sectors (Asia-Australia, Europe-Africa, and America). To detect MSTIDs, the cross-spectral method is used to obtain the nighttime MSTID parameters from small GPS network TEC series. The parameters of MSTIDs in different longitude are first compared, and their similarities and differences are discussed. On other hand, we focus on the seasonal variation of MSTID occurrence rate, especially their comparison in different longitude. Further, the features of MSTIDs in inter-hemisphere are also discussed. In addition, the characteristics of the MSTIDs during nighttime and daytime are compared, especially their similarities and differences in different longitude.