DEMETER卫星监测到的海地地震前电离层扰动

Abstract

Abstract: Based on the ionosperic data observed on Demeter, we did some exploratory research on the ionospheric disturbances prior to the Haiti M_S7.1 earthquake on Jan.12, 2010. By analysing electromagnetic frequency, plasma density and temperature, the relation between the ionospheric disturbances and the earthquake was discussed. It is showed that the electromagnetic anomalies were clear prior to the Haiti earthquake. The magnetic equator peak value was severely disturbed and the low frequency spectral density of the electric field E₁₂ increased. The density of O⁺ near the epicenter changed abnormally. The electromagnetic low frequency (VLF 40 Hz and 120 Hz) anomalies also clearly appeared over the epicenter before the earthquake.

Key words: DEMETER satellite, Ionospheric disturbances, Haiti earthquake

CLC Number:

P315

JIAO Qi-song, YAN Rui, ZHANG Jing-fa. Ionospheric Disturbances Observed on DEMETER Satellite Prior to the 2010 M_S7.1 Haiti Earthquake[J]. EARTHQUAKE, 2011, 31(2): 68-78.

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Ionospheric Disturbances Observed on DEMETER Satellite Prior to the 2010 M_S7.1 Haiti Earthquake

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Ionospheric Disturbances Observed on DEMETER Satellite Prior to the 2010 MS7.1 Haiti Earthquake

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Ionospheric Disturbances Observed on DEMETER Satellite Prior to the 2010 M_S7.1 Haiti Earthquake