日本地球惑星科学連合2023年大会

講演情報

印刷

[E] オンラインポスター発表

セッション記号 P (宇宙惑星科学) » P-EM 太陽地球系科学・宇宙電磁気学・宇宙環境

[P-EM12] Coupling Processes in the Atmosphere-Ionosphere System

2023年5月22日(月) 10:45 〜 12:15 オンラインポスターZoom会場 (2) (オンラインポスター)

コンビーナ:Liu Huixin(九州大学理学研究院地球惑星科学専攻 九州大学宙空環境研究センター)、大塚 雄一(名古屋大学宇宙地球環境研究所)、Chang Loren(Institute of Space Science, National Central University)、Yue Deng(University of Texas at Arlington)


現地ポスター発表開催日時 (2023/5/21 17:15-18:45)

10:45 〜 12:15

[PEM12-P16] Ionospheric Disturbances Observed During Super Typhoon Chanthu using low-latitude TEC data

*Mengqi Shao1、Yanshi Huang1 (1.Harbin Institute of Technology, Shenzhen)

キーワード：Typhoon Chanthu, TEC, ionospheric disturbances, gravity waves


The impact of Super Typhoon Chanthu on the ionosphere is investigated using low-latitude TEC observations. The temporal variations of TEC, ROT, ROTI are calculated using data from Madrigal database to illustrate the ionospheric disturbances in the low-latitude regions during Typhoon Chanthu. The amplitude, period, and velocity of the Travelling Ionospheric Disturbances (TIDs) induced by the gravity waves generated by Typhoon Chandhu are further analyzed using the high-resolution data from Central Weather Bureau. We find that the bandpass-filtered TEC disturbance varies between -0.2 and 0.2 TECu with a period of 10 minutes and speed of 127 m/s. These preliminary results imply that the energy transfer from low-altitude atmosphere to ionosphere can occur through upward-propagating gravity waves during Typhoon events.