Ionospheric variations observed by the DEMETER satellite in the mid-latitude region during strong earthquakes |
| |
| Institution: | 1. Space Science Laboratory, Department of Physics, Barkatullah University, Bhopal 462026, India;2. LPCE/CNRS, 3A Avenue de la Recherche Scientifique, 45071 Orléans Cedex 2, France;1. Harford Research Institute, 1411 Saratoga Dr, Bel Air, MD 21014, USA;2. Johns Hopkins University, Applied Physics Laboratory, Laurel, MD, USA;1. Department of Electrical & Computer Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece;2. Department of Surveying & Geodesy, Aristotle University of Thessaloniki, Thessaloniki, Greece;1. Department of Electrical and Electronics Engineering, Hacettepe University, Beytepe, Ankara, 06800, Turkey;2. IZMIRAN, Troitsk, Moscow, 108840, Russian Federation;1. Institute of Physics of the Earth, Russian Academy of Sciences, 10 Bolshaya Gruzinskaya, Moscow 123995, Russia;2. Hayakawa Institute of Seismo Electromagnetics, Co. Ltd., University of Electro-Communications (UEC), 1-5-1 Chufugaoka, Chofu, Tokyo 182-8585, Japan;3. UEC, Advanced Wireless Communications Research Center, 1-5-1 Chufugaoka, Chofu, Tokyo 182-8585, Japan;1. Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi 621, Taiwan;2. Institute of Earth Sciences, Academia Sinica, Taipei 115, Taiwan;3. Institute of Space Science, National Central University, Jhongli 320, Taiwan;4. Center for Space and Remote Sensing Research, National Central University, Jhongli 320, Taiwan;5. Department of Real Estate and Built Environment, National Taipei University, New Taipei City 237, Taiwan;6. Institute of Geophysics, National Central University, Jhongli 320, Taiwan;7. Seismological Center, Central Weather Bureau, Taipei 100, Taiwan |
| |
| Abstract: | The French micro-satellite DEMETER (Detection of Electromagnetic Emissions Transmitted from Earthquake Regions) was launched on June 29, 2004. The orbit of DEMETER is polar, circular with an altitude of 710 km. The main scientific objective of this mission is to study the ionospheric perturbations, which may be linked to seismic activity. To achieve this, the payload of DEMETER allows the measurement of some important plasma parameters (ion composition, electron density, temperature and energetic particles). This paper presents examples of electron and ion density irregularities simultaneously observed for three earthquakes that occurred in the mid-latitude region. The DEMETER in situ measurements show the presence of electron and ion density irregularities near the epicenter of these earthquakes. These perturbations were recorded by the ISL (Langmuir Probe) and IAP (thermal plasma analyzer) experiments onboard DEMETER. The repetitiveness of the perturbations close to the epicenters is shown for these three events. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
