ICE, the electric field experiment on DEMETER

Berthelier, Jean‐Jacques; Godefroy, Michel; Leblanc, Frédéric; Malingre, M.; Menvielle, M.; Lagoutte, D.; Brochot, J.-Y.; Colin, Frédéric; Elie, F.; Legendre, C. P.; Zamora, Peter B.; Benoist, D.; Chapuis, Y.; Artru, J.; Pfaff, R. F.

doi:10.1016/j.pss.2005.10.016

Cited by 306 publications

(224 citation statements)

References 31 publications

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“…[14] The DEMETER plasma wave instrument (ICE) [Berthelier et al, 2006] was used to detect the VLF (up to 20 kHz) and quasi-static electric field (frequency range 0-1.25 kHz). Langmuir probe [Lebreton et al, 2006] was used to measure electron density and the Magnetic Search Coil (IMSC) instrument [Parrot et al, 2006] for magnetic field measurements.…”

Section: Experiments Resultsmentioning

confidence: 99%

VLF electromagnetic field structures in ionosphere disturbed by Sura RF heating facility

et al. 2010

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[1] Observation of spatial VLF field structures in an artificially disturbed ionosphere is reported. The disturbed area with horizontal sizes ∼50 km in a quiet middle-latitude ionosphere was produced by the powerful RF Sura heating facility (56°1′N, 46°1′E). Measurements were carried out onboard the DEMETER satellite while passing the disturbed area at height ∼700 km. Spectra broadening (Df < ±1 kHz) and considerable (up to 30 dB) increase of signal intensity of VLF transmitters' signals were observed. The VLF field and electron density irregularities have similar spatial structure. The characteristics of the VLF field in disturbed by RF heating area are analyzed.Citation: Rapoport, V. O., V. L. Frolov, S.

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Section: Experiments Resultsmentioning

confidence: 99%

VLF electromagnetic field structures in ionosphere disturbed by Sura RF heating facility

et al. 2010

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“…DEMETER is a French satellite launched at the end of June 2004, and orbiting at an altitude of about 710 km along approximately a circular orbit with an inclination of 98.3 • . We use the waveform of one component of the electric field measurement in the VLF frequency range by the ICE experiment (Berthelier et al, 2006). The waveform is available when the satellite is in the burst mode.…”

Section: Satellite Vlf Data and The Whistler Time Determinationmentioning

confidence: 99%

Assigning the causative lightning to the whistlers observed on satellites

et al. 2006

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Abstract.We study the penetration of lightning induced whistler waves through the ionosphere by investigating the correspondence between the whistlers observed on the DEMETER and MAGION-5 satellites and the lightning discharges detected by the European lightning detection network EUCLID. We compute all the possible differences between the times when the whistlers were observed on the satellite and times when the lightning discharges were detected. We show that the occurrence histogram for these time differences exhibits a distinct peak for a particular characteristic time, corresponding to the sum of the propagation time and a possible small time shift between the absolute time assigned to the wave record and the clock of the lightning detection network. Knowing this characteristic time, we can search in the EUCLID database for locations, currents, and polarities of causative lightning discharges corresponding to the individual whistlers. We demonstrate that the area in the ionosphere through which the electromagnetic energy induced by a lightning discharge enters into the magnetosphere as whistler mode waves is up to several thousands of kilometres wide.

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“…The sensitivities of the electric field antenna onboard DEME-TER satellite are 0.1 µV m −1 Hz −1/2 at 100 Hz (Berthelier et al, 2006) which means when the electric field of incident wave exceeds 1 V m −1 at the altitude of 50 km, the disturbance can be detected by DEMETER satellite. Xiong (2001) has pointed out that when the seismic charge density is 10 −4 -10 −5 C m −2 , the electric field can reach 10 3 -10 4 V m −1 at 50 km altitude in the late pre-seismic stages in a 100 km 2 region.…”

Section: The Electric Field Variations Before Earthquakesmentioning

confidence: 99%

The numerical simulation on ionospheric perturbations in electric field before large earthquakes

et al. 2014

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Abstract.Many observational results have shown electromagnetic abnormality in the ionosphere before large earthquakes. The theoretical simulation can help us to understand the internal mechanism of these anomalous electromagnetic signals resulted from seismic regions. In this paper, the horizontal and vertical components of electric and magnetic field at the topside ionosphere are simulated by using the full wave method that is based on an improved transfer matrix method in the lossy anisotropic horizontally stratified ionosphere. Taken account into two earthquakes with electric field perturbations recorded by the DEMETER satellite, the numerical results reveal that the propagation and penetration of ULF (ultra-low-frequency) electromagnetic waves into the ionosphere is related to the spatial distribution of electron and ion densities at different time and locations, in which the ion density has less effect than electron density on the field intensity. Compared with different frequency signals, the minimum values of electric and magnetic field excited by earthquakes can be detected by satellite in current detection capability have also been calculated, and the lower frequency wave can be detected easier.

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ICE, the electric field experiment on DEMETER

Cited by 306 publications

References 31 publications

VLF electromagnetic field structures in ionosphere disturbed by Sura RF heating facility

VLF electromagnetic field structures in ionosphere disturbed by Sura RF heating facility

Assigning the causative lightning to the whistlers observed on satellites

The numerical simulation on ionospheric perturbations in electric field before large earthquakes

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