Japan Geoscience Union Meeting 2018

Presentation information

[JJ] Poster

M (Multidisciplinary and Interdisciplinary) » M-IS Intersection

[M-IS09] Electromagnetic phenomena associated with seismic and volcanic activities

Tue. May 22, 2018 1:45 PM - 3:15 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

convener:Tetsuya Kodama(Research Unit I, Research and Development Directorate, Japan Space Exploration Agency), Toshiyasu Nagao(Institute of Oceanic Research and development, Tokai University), Yasuhide Hobara(電気通信大学 大学院情報理工学研究科)

[MIS09-P06] Nonlinear prediction model of ionospheric foF2 variability

*Hendy Santosa1,2, Yasuhide Hobara1,3,4 (1.Department of Communication Engineering and Informatics, The University of Electro-Communications, Tokyo, Japan, 2.Department of Electrical Engineering, Bengkulu University, Bengkulu, Indonesia, 3.Center for Space Science and Radio Engineering, The University of Electro-Communications, Tokyo, Japan, 4.Earth Environment Research Station, The University of Electro-Communications, Tokyo, Japan)

Keywords:nonlinear autoregressive with exogenous input neural network, one step ahead prediction, foF2

Nonlinear autoregressive with exogenous input neural network (NARXNN) for one step ahead prediction of the F2 layer critical frequency (foF2) at Kokubunji ionosonde station (35.72° N, 139.49° E) was developed. The daily or hourly variation of foF2 is an output, and solar activity (DOY1, DOY2, SSN, F10.7 index) and magnetic activity (Dst, AE, and Kp indices) parameters are the exogenous inputs with a time interval from 1 January 1964 to 31 December 2016. The performance of NARXNN model was evaluated by using the Pearson’s correlation coefficient (r) and root mean square error (RMSE). The results show that predicted values of foF2 have very good agreement with observed values. Moreover, the constructed model has a high Pearson’s correlation coefficient and a small RMSE. Therefore the constructed model based on the proposed methodology provides a good prediction of foF2 for Kokubunji ionosonde station, and solar flux at 10.7 cm is recognized as the most significant external forcings contributing to foF2 prediction.