Infrasonic waves in the ionosphere generated by a weak earthquake

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F11%3A00367508" target="_blank" >RIV/68378289:_____/11:00367508 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S1364682611001374" target="_blank" >http://www.sciencedirect.com/science/article/pii/S1364682611001374</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jastp.2011.05.002" target="_blank" >10.1016/j.jastp.2011.05.002</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Infrasonic waves in the ionosphere generated by a weak earthquake

Popis výsledku v původním jazyce

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 provideestimates 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 25s, 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.

Název v anglickém jazyce

Infrasonic waves in the ionosphere generated by a weak earthquake

Popis výsledku anglicky

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 provideestimates 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 25s, 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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Atmospheric and Solar-Terrestrial Physics

ISSN

1364-6826

e-ISSN

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Svazek periodika

73

Číslo periodika v rámci svazku

13

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

1930-1939

Kód UT WoS článku

000294591800037

EID výsledku v databázi Scopus

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