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DOI	10.1016/j.atmosres.2019.104770
	Infrasound observations of sprites associated with winter thunderstorms in the eastern mediterranean
	Applbaum D.; Averbuch G.; Price C.; Yair Y.; Ben-Horin Y.
发表日期	2020
ISSN	0169-8095
卷号	235
英文摘要	Sprites are transient luminous events (TLEs) that occur at mesospheric altitudes between 50 and 90 km. They last up to several milliseconds, and are caused mostly by positive lightning discharges from the thunderstorm cells below. Infrasound from sprites was first observed in detail a decade ago by a team from the French Atomic Energy Commission (CEA), as part of a renewed international interest in infrasound measurements brought about by the Comprehensive Nuclear Test Ban Treaty (CTBT) (Farges et al., 2005). They used optical images of sprites obtained during the EuroSprite observation campaign in order to form the temporal and azimuthal basis necessary for searching for the infrasound signatures from these events, which appear as unique “chirp” or “inverted chirp” signatures depending on the sprite's distance from the infrasound array. In this paper we follow this methodology to see if the nascent Israeli infrasound arrays can detect these signals from sprites in the Eastern Mediterranean, for which there are nearly 8 years of winter-time optical observations. We calculated the expected arrival time of the infrasound from optically observed sprites, and then used a basic ray-tracing method in order to confirm that we were in fact able to observe several of these sprites, at various distances, exhibiting both “chirp” and “inverted chirp” signals. We then compared these observations with observations of lightning activity made by the World Wide Lightning Location Network (WWLLN). © 2019 Elsevier B.V.
学科领域	Lightning; Ray tracing; Comprehensive nuclear test ban treaties; Eastern Mediterranean; French atomic energy commissions; Optical observations; Positive lightning; Ray-tracing method; Transient luminous events; Winter thunderstorms; Thunderstorms; atmospheric electricity; image analysis; infrasonics; observational method; sprite; thunderstorm; winter; Mediterranean Region
语种	英语
scopus关键词	Lightning; Ray tracing; Comprehensive nuclear test ban treaties; Eastern Mediterranean; French atomic energy commissions; Optical observations; Positive lightning; Ray-tracing method; Transient luminous events; Winter thunderstorms; Thunderstorms; atmospheric electricity; image analysis; infrasonics; observational method; sprite; thunderstorm; winter; Mediterranean Region
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120501
作者单位	Tel Aviv University, Ramat Aviv, Israel; Interdisciplinary Center (IDC) Herzliya, Herzliya, Israel; Soreq Nuclear Research Center, Israel
推荐引用方式 GB/T 7714	Applbaum D.,Averbuch G.,Price C.,et al. Infrasound observations of sprites associated with winter thunderstorms in the eastern mediterranean[J],2020,235.
APA	Applbaum D.,Averbuch G.,Price C.,Yair Y.,&Ben-Horin Y..(2020).Infrasound observations of sprites associated with winter thunderstorms in the eastern mediterranean.Atmospheric Research,235.
MLA	Applbaum D.,et al."Infrasound observations of sprites associated with winter thunderstorms in the eastern mediterranean".Atmospheric Research 235(2020).