气候变化领域集成服务门户(CCPortal): Propagation Teepee: A Possible High-Frequency (15–30 MHz) Remote Lightning Signature Identified by Citizen Scientists

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DOI	10.1029/2020GL087307
	Propagation Teepee: A Possible High-Frequency (15–30 MHz) Remote Lightning Signature Identified by Citizen Scientists
	Fung S.F.; Typinski D.; Flagg R.; Ashcraft T.; Greenman W.; Higgins C.; Brown J.; Dodd L.; Reyes F.; Sky J.; Thieman J.; Garcia L.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:11
英文摘要	A high-frequency spectral feature is identified in ground-based spectrograph data at 15–30 MHz. The feature, likely of terrestrial origin, is often recorded by a group of citizen scientists (the Spectrograph User Group) whose main interest is to observe Jupiter's radio emissions. The feature appears as radio band noise enhancement in which the frequency of enhancement increases and then decreases with time, forming a “triangular spectral feature.” The teepee tent shape leads to its name (TP for short). TPs usually have well-defined leading and trailing edges. While some TPs occur in isolation, they are often seen in groups, distributed either in time or in apex frequency. While most TPs appear diffuse, close-up views of a few TPs reveal that they actually consist of discrete bursts, highly suggestive of lightning strokes as possible radiation sources. Here, we investigate the possible generation of TPs by ionospheric reflection of radiation from remote lightning storms. ©2020. American Geophysical Union. All Rights Reserved. This article has been contributed to by US Government employees and their work is in the public domain in the USA.
英文关键词	Spectrographs; Ground based; High frequency HF; Lightning strokes; Radiation source; Radio emission; Spectral feature; Trailing edges; User groups; Lightning; data set; ionosphere; Jupiter; lightning; radio; spectral analysis; storm; wavelength
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170265
作者单位	Ionospheric, Thermospheric, Mesospheric Physics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, United States; AJ4CO Observatory, High Spring, FL, United States; RF Associates, Honolulu, HI, United States; Heliotown Observatory, Lamy, NM, United States; LGM Radio Alachua, Alachua, FL, United States; Department Physics and Astronomy, Middle Tennessee State University, Murfreesboro, TN, United States; Hawks Nest Radio Astronomy Observatory, Industry, PA, United States; Georgia Amateur Radio Astronomy Observatory, Jasper, GA, United States; Department of Astronomy, University of Florida, Gainsville, FL, United States; Radio Sky Publishing, Louisville, KY, United States; UMBC/NASA GSFC, Greenbelt, MD, United States; SGT/NASA GSFC, Greenbelt, MD, United States
推荐引用方式 GB/T 7714	Fung S.F.,Typinski D.,Flagg R.,等. Propagation Teepee: A Possible High-Frequency (15–30 MHz) Remote Lightning Signature Identified by Citizen Scientists[J],2020,47(11).
APA	Fung S.F..,Typinski D..,Flagg R..,Ashcraft T..,Greenman W..,...&Garcia L..(2020).Propagation Teepee: A Possible High-Frequency (15–30 MHz) Remote Lightning Signature Identified by Citizen Scientists.Geophysical Research Letters,47(11).
MLA	Fung S.F.,et al."Propagation Teepee: A Possible High-Frequency (15–30 MHz) Remote Lightning Signature Identified by Citizen Scientists".Geophysical Research Letters 47.11(2020).