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Infrasonic waves in the ionosphere generated by a weak earthquake
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SYSNO ASEP 0367508 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Infrasonic waves in the ionosphere generated by a weak earthquake Tvůrce(i) Krasnov, V. M. (RU)
Drobzheva, Ya. V. (RU)
Chum, Jaroslav (UFA-U) RID, ORCIDZdroj.dok. Journal of Atmospheric and Solar-Terrestrial Physics. - : Elsevier - ISSN 1364-6826
Roč. 73, č. 13 (2011), s. 1930-1939Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Earthquake ; Infrasonic waves ; Ionospheric disturbances Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech CEP GA205/07/1367 GA ČR - Grantová agentura ČR GA205/09/1253 GA ČR - Grantová agentura ČR CEZ AV0Z30420517 - UFA-U, BC-A (2005-2011) UT WOS 000294591800037 DOI 10.1016/j.jastp.2011.05.002 Anotace A computer code has been developed to simulate the generation of infrasonic waves (frequencies considered <= 80 Hz) by a weak earthquake (magnitude similar to 3.6), their propagation through the atmosphere and their effects in the ionosphere. We provide estimates of the perturbations in the ionosphere at the height (similar to 160 km) where waves at the sounding frequency (3.59 MHz) of a continuous Doppler radar reflect. We have found that the pressure perturbation is 5.79 x 10(-7) Pa (0.26% of the ambient value), the temperature perturbation is 0.088 K (0.015% of the ambient value) and the electron density perturbation is 2 x 10(8) m(-3) (0.12% of the ambient value). The characteristic perturbation is found to be a bipolar pulse lasting similar to 25 s, and the maximum Doppler shift is found to be similar to 0.08 Hz, which is too small to be detected by the Doppler radar at the time of the earthquake. Pracoviště Ústav fyziky atmosféry Kontakt Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019 Rok sběru 2012 Elektronická adresa http://www.sciencedirect.com/science/article/pii/S1364682611001374
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