HR: 1340h
AN: AE23A-0892    [Abstracts]
TI: On Possibility to use VLF Transmitter Signals Received on Satellite and Ground for Global Diagnostics of Ionospheric Perturbations Associated With Seismicity and Volcano Eruption
AU: * Molchanov, O
EM: olmolchanov@mail.ru
AF: Oleg Molchanov, Institute of Earth Physics,Bolshaya Gruzinskaya 10, Moscow, 123995, Russian Federation
AU: Rozhnoi, A
EM: rozhnoi@rambler.ru
AF: Oleg Molchanov, Institute of Earth Physics,Bolshaya Gruzinskaya 10, Moscow, 123995, Russian Federation
AU: Solovieva, M
EM: rozhnoi@rambler.ru
AF: Oleg Molchanov, Institute of Earth Physics,Bolshaya Gruzinskaya 10, Moscow, 123995, Russian Federation
AB: We present two methods of the global ionosphere diagnostics using VLF signal received on a board of satellite in association with two cases of strong seismic activation. The method of reception zone changes reveals evident effect before and during great Sumatra earthquake with long-time duration order of one month. The result leads to conclusion on size of perturbation area order of several thousands kilometers. Disadvantage of this method is in difficulty to separate preseismic and postseismic effects. In contrast, the difference method allows to do so and shows the appearance of preseismic effect in several days for seismic activation near Japan. However for reliability of such analysis we need in regular satellite data and in the check by the ground reception of subionospheric VLF signal. It is not obvious that both effects are excited by the same generation mechanism at the ground. So, these methods look as complementary.
DE: 0689 Wave propagation (2487, 3285, 4275, 4455, 6934)
DE: 0925 Magnetic and electrical methods (5109)
DE: 2439 Ionospheric irregularities
DE: 6929 Ionospheric physics (1240, 2400)
DE: 6979 Space and satellite communication
SC: Atmospheric and Space Electricity [AE]
MN: 2007 Fall Meeting