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- Title
Ionospheric perturbations: a case study of 2007 five major earthquakes using DEMETER data.
- Authors
Thomas, Jewel Emem; Ekanem, Aniekan Martin; George, Nyakno Jimmy; Akpan, Anthony Effiong
- Abstract
Using the Plasma analyzer (IAP) and Langmuir Probe (ISL) experiments of the Detection of Electromagnetic Emissions Transmitted from Earthquake Regions (DEMETER) lithospheric–atmospheric–ionospheric coupling has been observed before, during and after five major earthquakes with magnitudes greater than 6.5. The aim of this study is to use ionospheric parameters to identify the ionospheric perturbations associated with the five earthquake regions screened. All the three investigated ionospheric parameters of electron density, electron temperature and total ion density recorded perturbations within the investigative period. A total of 36 anomalies were obtained with 18 each for nighttime and daytime readings. The observed anomalies being screened for false alarm using the geomagnetic indices of Kernnifzer digit (kp) and disturbance storm time (Dst.) revealed 27.8% as geomagnetically induced perturbations. Thus, 72.2% of the studied anomalies transpired in quiet geomagnetic conditions, which is linked to seismic events.
- Subjects
IONOSPHERIC electron density; EARTHQUAKE magnitude; STORMS; ELECTRON temperature; GEOMAGNETISM; EARTHQUAKES; LANGMUIR probes
- Publication
Acta Geophysica, 2023, Vol 71, Issue 4, p1607
- ISSN
1895-6572
- Publication type
Article
- DOI
10.1007/s11600-023-01059-8