Počet záznamů: 1
Locating Thunder Source Using a Large-Aperture Micro-Barometer Array
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SYSNO ASEP 0541190 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Locating Thunder Source Using a Large-Aperture Micro-Barometer Array Tvůrce(i) Rusz, Jan (UFA-U) ORCID, RID
Chum, Jaroslav (UFA-U) RID, ORCID
Baše, Jiří (UFA-U) RID, ORCIDCelkový počet autorů 3 Číslo článku 614820 Zdroj.dok. Frontiers in Earth Science. - : Frontiers Media - ISSN 2296-6463
Roč. 9, March (2021)Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova infrasound ; lightning ; thunder ; acoustic ; spherical ; waves Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech Obor OECD Fluids and plasma physics (including surface physics) CEP GA18-01969S GA ČR - Grantová agentura ČR Způsob publikování Open access Institucionální podpora UFA-U - RVO:68378289 UT WOS 000635162500001 EID SCOPUS 85103521667 DOI https://doi.org/10.3389/feart.2021.614820 Anotace Lightning generates sound waves across a wide range of frequencies, including infrasonic waves below 20 Hz. Source mechanism for these low frequency pulses is still area for debate. Infrasound pulses detected after rapid changes of electrostatic field during the thunderstorm activity were analyzed. The measurements were done by large aperture array of absolute microbarometers located in the Western part of the Czech Republic. Distances between four measuring sites are in the range of 4–10 km. The infrasound source position was calculated from time delays between the rapid change of electrostatic field and infrasound signal arrival to the individual microbarometers assuming propagation of spherical waves from the source. Only cases with a sufficient signal-to-noise ratio on all four microbarometers were analyzed. The variation of sound speed with height due to temperature height profile was taken into account. For most of the analyzed cases, the calculated infrasound source position corresponds to the lightning location determined by European lightning detection network (EUCLID). The calculated height of infrasound source is most often 3–5 km. 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 2022 Elektronická adresa https://www.frontiersin.org/articles/10.3389/feart.2021.614820/full
Počet záznamů: 1