An Extremely Low Frequency−Very Low Frequency (ELF−VLF) radio wave
observation network system in the Tokyo metropolitan area has been newly established to detect
lightning activity and investigate the characteristics of heavy rainfall induced by thunderstorms.
The VLF electromagnetic waveforms induced by lightning (commonly known as “sferics”) were
observed at three sites (Hachioji, Yokosuka, and Koto) from the Baiu season until mid-summer
2013. The observed VLF sferics were used to detect lightning frequency and estimating the
geo-locate the lightning source according to the time of arrival (TOA) method. The preliminary
results suggest that this system could detect the lightning signals from convective cloud systems,
despites differences in detection sensitivity and diurnal cycles between sites. Further studies are
required to optimize the observation network system and refine the VLF sferics analysis method to
enable the collection of high-accuracy
雑誌名
Geographical reports of Tokyo Metropolitan University
巻
49
ページ
13 - 22
発行年
2014
ISSN
03868710
書誌レコードID
AA00200173
著者版フラグ
publisher
出版者
Department of Geography, Tokyo Metropolitan University
Overview of lightning observation network with ELF-VLF electromagnetic measurements over Tokyo Metropolitan Area
20005-49-002.pdf
(1.33MB)
