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Ionospheric oscillations caused by geomagnetic Pi2 pulsations and their observations by multipoint continuous Doppler sounding; first results
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SYSNO ASEP 0330328 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Ionospheric oscillations caused by geomagnetic Pi2 pulsations and their observations by multipoint continuous Doppler sounding; first results Title Ionosférické oscilace způsobené geomagnetickými pulzacemi Pi2 a jejich pozorování prostřednictvím Dopplerovského systému; první výsledky Author(s) Chum, Jaroslav (UFA-U) RID, ORCID
Hruška, František (UFA-U) RID
Burešová, Dalia (UFA-U) RID, ORCID
Šindelářová, Tereza (UFA-U) RID, ORCID
Hejda, Pavel (GFU-E) ORCID, RID
Bochníček, Josef (GFU-E) ORCID, RIDSource Title Advances in Space Research. - : Elsevier - ISSN 0273-1177
Roč. 44, č. 6 (2009), s. 667-676Number of pages 10 s. Publication form web - web Language eng - English Country GB - United Kingdom Keywords Magnetosphere–ionosphere interactions ; Ionosphere irregularities ; Geomagnetic pulsations ; Doppler sounding ; Magneto-hydrodynamic (ULF) waves Subject RIV BL - Plasma and Gas Discharge Physics R&D Projects GA205/07/1367 GA ČR - Czech Science Foundation (CSF) GA205/06/0875 GA ČR - Czech Science Foundation (CSF) 1QS300120506 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) IAA300420603 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z30420517 - UFA-U, BC-A (2005-2011) AV0Z30120515 - GFU-E (2005-2011) UT WOS 000269594900004 DOI 10.1016/j.asr.2009.04.030 Annotation In 2004, we started operating a continuous Doppler sounding system to investigate ionospheric signatures of infrasonic, short period acoustic gravity waves and geomagnetic pulsations. Since January 2007, four stable 3.59 MHz transmitters have been in operation in the western part of the Czech Republic. Multipoint measurements enable us to investigate horizontal propagation of waves and disturbances in the ionosphere and to estimate horizontal distances over which these waves (disturbances) are correlated. We focus on cross-correlations between Doppler shift records and irregular night-time Pi2 pulsations of the geomagnetic field measured on the ground at the observatory of Budkov. These pulsations have periods _1–3 min and occur simultaneously (within the precision of the measurements) on all Doppler sounding signals. The sounding signals (Doppler records) are usually best correlated with the variations of the horizontal component of the geomagnetic field. Workplace Institute of Atmospheric Physics Contact Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019 Year of Publishing 2010
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