Satellite study of VLF ground-based transmitter signals during seismic activity in Honshu Island
| Autor: | Michel Parrot, Jan Slominski, Jan Blecki, Ewa Slominska |
|---|---|
| Přispěvatelé: | Space Research Centre of Polish Academy of Sciences (CBK), Polska Akademia Nauk (PAN), Laboratoire de physique et chimie de l'environnement (LPCE), Université d'Orléans (UO)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Polska Akademia Nauk = Polish Academy of Sciences (PAN) |
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
021110 strategic
defence & security studies 010504 meteorology & atmospheric sciences Transmitter Background data 0211 other engineering and technologies Electromagnetic signal Signal global maps 02 engineering and technology 01 natural sciences Signal VLF transmitter Electric field disturbances On board Geophysics Geochemistry and Petrology [SDU]Sciences of the Universe [physics] Electric field Earthquakes Satellite Very low frequency Seismology Geology 0105 earth and related environmental sciences Remote sensing |
| Zdroj: | Physics and Chemistry of the Earth, Parts A/B/C Physics and Chemistry of the Earth, Parts A/B/C, Elsevier, 2009, 34 (6-7), pp.464-473. ⟨10.1016/j.pce.2008.06.016⟩ |
| DOI: | 10.1016/j.pce.2008.06.016⟩ |
| Popis: | International audience; The paper is related to the study of the VLF (very low frequency) signal transmitted from the radio-navigation station in Komsomolsk-na-Amure at frequencies 11.9 kHz and 14.8 kHz during seismic activity in Japan. First, using data collected with the electric field experiment on board the DEMETER satellite, global maps of electromagnetic signal at the frequencies of the transmitter have been obtained. Second, particular analysis of the VLF signals have been done at the time of two powerful earthquakes which took place in the region of Honshu Island on 2005/08/16 and on 2007/07/16. Comparison with averaged background data revealed disturbances in the signal intensity transmitted from the Komsomolsk-na-Amure station and received by the satellite. Discussions to understand why such changes can be associated with seismic activity are developed. |
| Databáze: | OpenAIRE |
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