Observations of wave activity in the ionosphere over South Africa in geomagnetically quiet and disturbed periods

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F12%3A00378870" target="_blank" >RIV/68378289:_____/12:00378870 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.asr.2012.04.016" target="_blank" >http://dx.doi.org/10.1016/j.asr.2012.04.016</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.asr.2012.04.016" target="_blank" >10.1016/j.asr.2012.04.016</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Observations of wave activity in the ionosphere over South Africa in geomagnetically quiet and disturbed periods

Popis výsledku v původním jazyce

The present paper deals with observations of wave activity in the period range 1?60 min at ionospheric heights over the Western Cape, South Africa from May 2010 to July 2010. The study is based on the Doppler type sounding of the ionosphere. The Dopplerfrequency shift measurements are supplemented with measurements of collocated Digisonde DPS-4D at SANSA Space Sciences, Hermanus. Nine geomagnetically quiet days and nine geomagnetically active days were included in the study. Waves of periods 4?30 min were observed during the daytime independent of the level of geomagnetic activity. Amplitudes of 10?30 min waves always increased between 14:00 and 16:15 UT (16:00?18:15 LT). Secondary maxima were observed between 06:00 and 07:00 UT (08:00?09:00 LT). Themaximum wave amplitudes occurred close to the time of passage of the solar terminator in the studied region which is known to act as a source of gravity waves. Waves of periods 30?50 min were observed in the F2 layer during the daytime on

Název v anglickém jazyce

Observations of wave activity in the ionosphere over South Africa in geomagnetically quiet and disturbed periods

Popis výsledku anglicky

The present paper deals with observations of wave activity in the period range 1?60 min at ionospheric heights over the Western Cape, South Africa from May 2010 to July 2010. The study is based on the Doppler type sounding of the ionosphere. The Dopplerfrequency shift measurements are supplemented with measurements of collocated Digisonde DPS-4D at SANSA Space Sciences, Hermanus. Nine geomagnetically quiet days and nine geomagnetically active days were included in the study. Waves of periods 4?30 min were observed during the daytime independent of the level of geomagnetic activity. Amplitudes of 10?30 min waves always increased between 14:00 and 16:15 UT (16:00?18:15 LT). Secondary maxima were observed between 06:00 and 07:00 UT (08:00?09:00 LT). Themaximum wave amplitudes occurred close to the time of passage of the solar terminator in the studied region which is known to act as a source of gravity waves. Waves of periods 30?50 min were observed in the F2 layer during the daytime on

Druh

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

CEP obor

DG - Vědy o atmosféře, meteorologie

OECD FORD obor

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Projekt

<a href="/cs/project/GAP209%2F12%2F2440" target="_blank" >GAP209/12/2440: Dynamické vazby troposféra-ionosféra a jejich vliv na ionosférickou variabilitu</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Advances in Space Research

ISSN

0273-1177

e-ISSN

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Svazek periodika

50

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

182-195

Kód UT WoS článku

000305729000002

EID výsledku v databázi Scopus

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