On Es-spread effects in the ionosphere connected to earthquakes
- In the present work, phenomena in the ionosphere are studied, which are connected with earthquakes (16 events) having a depth of less than 50 km and a magnitude M larger than 4. Analysed are night-time Es-spread effects using data of the vertical sounding station Petropavlovsk- Kanchatsky (φ=53.0°, λ=158.7°) from May 2004 until August 2004 registered every 15 minutes. It is found that the maximum distance of the earthquake from the sounding station, where pre-seismic phenomena are yet observable, depends on the magnitude of the earthquake. Further it is shown that 1-2 days before the earthquakes, in the premidnight hours, the appearance of Es-spread increases. The reliability of this increase amounts to 0.95.
Author details: | E. V. Liperovskaya, Claudia-Veronika Meister, M. Parrot, V. V. Bogdanov, N. E. Vasil‘eva |
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URN: | urn:nbn:de:kobv:517-opus-15003 |
Publication series (Volume number): | NLD Preprints (65) |
Publication type: | Preprint |
Language: | English |
Publication year: | 2006 |
Publishing institution: | Universität Potsdam |
Release date: | 2007/08/15 |
Organizational units: | Zentrale und wissenschaftliche Einrichtungen / Interdisziplinäres Zentrum für Dynamik komplexer Systeme |
DDC classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |