Primary joint statistical seismic influence on ionospheric parameters recorded by the CSES and DEMETER satellites - INSU - Institut national des sciences de l'Univers Accéder directement au contenu
Article Dans Une Revue Journal of Geophysical Research Space Physics Année : 2020

Primary joint statistical seismic influence on ionospheric parameters recorded by the CSES and DEMETER satellites

Xuhui Shen
  • Fonction : Auteur
Xuemin Zhang
  • Fonction : Auteur
Yan Zhang
Rui Yan
Dapeng Liu
  • Fonction : Auteur
Hengxin Lu
  • Fonction : Auteur
Feng Guo
  • Fonction : Auteur
Jianping Huang
  • Fonction : Auteur

Résumé

Oppositely to a previous statistical work using a single time resolution of the total ion density measured onboard the DEMETER satellite, this work deals with statistical seismo‐ionospheric influences by comparing different parameters and various time resolutions. The O+ density and electron density recorded by the CSES satellite for more than one year and by the DEMETER satellite for about 6.5 years have been utilized to globally search ionospheric perturbations with different time resolutions. A comparison is automatically done by software between the occurrence of these ionospheric perturbations determined by different data sets, and the occurrence of earthquakes under the conditions that these perturbations occur at less than 1500 km and up to 15 days before the earthquakes. Combined with statistical results given by both satellites, it is shown that the detection rate r of earthquakes increases as the data time resolution and the earthquake magnitude increase and as the focal depth decreases. On average, the number of perturbations is higher the day of the earthquake, and then smoothly decreases the days before, which is independent of either ionospheric parameters or time resolutions. The number of right alarms is high near the South Atlantic Magnetic Anomaly area but its relationship with seismic activities is weak. The ion density tends to be more sensitive to seismic activities than the electron density but this needs further investigations. This study shows that the CSES satellite could effectively register ionospheric perturbations due to strong EQs as the DEMETER satellite does.
Fichier principal
Vignette du fichier
2020JA028116.pdf (1.09 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

insu-03020867 , version 1 (24-11-2020)
insu-03020867 , version 2 (29-03-2021)

Identifiants

Citer

Mei Li, Xuhui Shen, Michel Parrot, Xuemin Zhang, Yan Zhang, et al.. Primary joint statistical seismic influence on ionospheric parameters recorded by the CSES and DEMETER satellites. Journal of Geophysical Research Space Physics, 2020, Accepted Manuscript, ⟨10.1029/2020JA028116⟩. ⟨insu-03020867v1⟩
87 Consultations
96 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More