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The DEMETER (Detection of Electro-Magnetic Emissions Transmitted from Earthquake Regions) micro-satellite is designed to investigate disturbances in the Earth's ionosphere due to seismic and volcanic activities. The DEMETER project Team studies in general the whistler-mode emissions observed by the Instrument Champ Electrique (ICE) experiment aboard the DEMETER micro-satellite. The main aim is the analysis of pre-seismic electromagnetic emissions observed by DEMETER and also by ULF, VLF, and GPS ground-based stations.
In the frame of this project the following topics have been investigated:
a) Statistical approach which leads us to study the VLF flux density variations over seismic regions (Boudjada et al., 2010),
b) Analysis of the Total Electron Content (TEC) over the Adriatic Earthquakes regions (Stangl et al., 2011) using GPS system,
c) Study of VLF transmitter signals over earthquake regions (Boujada et al., 2008),
d) Investigation of physical peneteration mechanisms of lithospheric electric field from the Earth's surface through the atmosphere layers, and until its detection in space by satellite (Ampferer et al., 2010; Denisenko et al., 2008), and
e) Combination of ground-based and space-borne observations using SEGMA network (Schwingenschuh et al., 2011, Prattes et al., 2008), GPS Test Bed Adria and VLF ground-based network.
Further information about DEMETER can be found at CNES and CNRS Orléans.
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| 1. |
Schwingenschuh et al.:
The Graz seismo-electromagnetic VLF facility,
Nat. Hazards Earth Syst. Sci.,
11,
1121-1127, doi:10.5194/nhess-11-1121-2011,
2011.
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| 2. |
Stangl et al.:
Investigation of TEC and VLF space measurements associated to L’Aquila (Italy) earthquakes,
Nat. Hazards Earth Syst. Sci.,
11,
1019-1024,
2011.
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| 3. |
Ampferer et al.:
Decrease of the electric field penetration into the ionosphere due to low conductivity at the near ground atmospheric layer,
Ann. Geophys.,
28,
779-787,
2010.
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| 4. |
Boudjada et al.:
Decrease of VLF transmitter signal and Chorus-whistler waves before L’Aquila earthquake occurrence,
Nat. Hazards Earth Syst. Sci.,
10,
1487-1494,
2010.
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| 5. |
Boudjada et al.:
Similar behaviors of natural ELF/VLF ionospheric emissions and transmitter signals over seismic Adriatic regions,
Nat. Hazards Earth Syst. Sci.,
8,
1229-1236,
2008.
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| 6. |
Denisenko et al.:
Ionospheric conductivity effects on electrostatic field penetration into the ionosphere,
Nat. Hazards Earth Syst. Sci.,
8,
1009-1017,
2008.
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| 7. |
Prattes et al.:
Multi-point ground-based ULF magnetic field observations in Europe during seismic active periods in 2004 and 2005,
Nat. Hazards Earth Syst. Sci.,
8,
501-507,
2008.
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