Observations of wave activity in the ionosphere on geomagnetically quiet and disturbed days

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F15%3A00445398" target="_blank" >RIV/68378289:_____/15:00445398 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Observations of wave activity in the ionosphere on geomagnetically quiet and disturbed days

Popis výsledku v původním jazyce

Waves of periods between 30 and 360 s were observed in the ionospheric F region on the geomagnetically quiet day of 6 November 2012 and on the geomagnetically disturbed day of 2 October 2013 during the initial phase of the geomagnetic storm (minimum Dstwas -67 nT at 08:00 a.m. UT). On both days, the waves emerged in the time interval of total length of several hours starting after midnight. Observations of the short period waves require high sampling frequency of the measurements. Such type of ionospheric measurements is feasible by Doppler sounders. The multipoint and multifrequency Doppler sounder is operated in the Czech Republic and it enables to study horizontal as well as vertical propagation of the waves. We estimated propagation parameters ofthe observed 30-360 s waves and compared the results for the geomagnetically quiet and disturbed period. Vertically propagating infrasound was observed on the geomagnetically quiet day. On the disturbed day, a possible relation of the ion

Název v anglickém jazyce

Observations of wave activity in the ionosphere on geomagnetically quiet and disturbed days

Popis výsledku anglicky

Waves of periods between 30 and 360 s were observed in the ionospheric F region on the geomagnetically quiet day of 6 November 2012 and on the geomagnetically disturbed day of 2 October 2013 during the initial phase of the geomagnetic storm (minimum Dstwas -67 nT at 08:00 a.m. UT). On both days, the waves emerged in the time interval of total length of several hours starting after midnight. Observations of the short period waves require high sampling frequency of the measurements. Such type of ionospheric measurements is feasible by Doppler sounders. The multipoint and multifrequency Doppler sounder is operated in the Czech Republic and it enables to study horizontal as well as vertical propagation of the waves. We estimated propagation parameters ofthe observed 30-360 s waves and compared the results for the geomagnetically quiet and disturbed period. Vertically propagating infrasound was observed on the geomagnetically quiet day. On the disturbed day, a possible relation of the ion

Druh

O - Ostatní výsledky

CEP obor

DG - Vědy o atmosféře, meteorologie

OECD FORD obor

—

Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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