GSTDTAP  > 气候变化
DOI10.1029/2018JD028814
Acoustical Measurement of Natural Lightning Flashes: Reconstructions and Statistical Analysis of Energy Spectra
Lacroix, Arthur1,2,3; Farges, Thomas3; Marchiano, Regis1,2; Coulouvrat, Francois1,2
2018-11-16
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
EISSN2169-8996
出版年2018
卷号123期号:21页码:12040-12065
文章类型Article
语种英语
国家France
英文摘要

Twenty-seven natural flashes of three thunderstorms which occurred during October 2012 in Southern France are acoustically reconstructed and analyzed in the [0.1-180]-Hz frequency bandwidth and the [0.3-20]-kmdistance range. A 50-m triangular array of four recalibrated microphones sampled at 500 Hz has been used for the recording. A novel method of separation of return strokes from intracloud discharges within the acoustical signal is detailed and systematically applied. It shows the possibility to separate nearby cloud-to-ground (CG) events or nearby and distant CGs of the same flash. The separation method yields a total of 36 return stroke signals and spectra, along with some intracloud signals. The combination of reconstruction, separation, and frequency analysis provides new insights on the origin of thunder infrasound, showing unambiguously that thunder infrasound originate dominantly from return strokes. Apart from the higher amplitude of CGs, no clear difference between intracloud and CG spectra is observed. No sharp frequency peaks can be put into evidence. The spectral variability with distance is highlighted, especially for the total acoustic energy and the center frequency and bandwidth. A link between acoustic energy and impulse charge moment change is also found, though only by a small number of data.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000452001400016
WOS关键词RETURN-STROKE ; SHOCK-WAVE ; POWER SPECTRUM ; DISCHARGES ; THUNDER ; LOCATION ; SYSTEM ; PEAK ; PROPAGATION ; INFRASOUND
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/34354
专题气候变化
作者单位1.Sorbonne Univ, Inst Jean Le Rond dAlembert, Paris, France;
2.CNRS, Paris, France;
3.CEA, DAM, DIF, Arpajon, France
推荐引用方式
GB/T 7714
Lacroix, Arthur,Farges, Thomas,Marchiano, Regis,et al. Acoustical Measurement of Natural Lightning Flashes: Reconstructions and Statistical Analysis of Energy Spectra[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(21):12040-12065.
APA Lacroix, Arthur,Farges, Thomas,Marchiano, Regis,&Coulouvrat, Francois.(2018).Acoustical Measurement of Natural Lightning Flashes: Reconstructions and Statistical Analysis of Energy Spectra.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(21),12040-12065.
MLA Lacroix, Arthur,et al."Acoustical Measurement of Natural Lightning Flashes: Reconstructions and Statistical Analysis of Energy Spectra".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.21(2018):12040-12065.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Lacroix, Arthur]的文章
[Farges, Thomas]的文章
[Marchiano, Regis]的文章
百度学术
百度学术中相似的文章
[Lacroix, Arthur]的文章
[Farges, Thomas]的文章
[Marchiano, Regis]的文章
必应学术
必应学术中相似的文章
[Lacroix, Arthur]的文章
[Farges, Thomas]的文章
[Marchiano, Regis]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。