ISWI Newsletter - Vol.5 No.83
13 August 2013

Dear ISWI Participant:

Recently, GEON (explained in the attached pdf) equipment was installed in the MAGDAS station at Kuju, Oita Prefecture, Japan. Attached is the full report for this installation; the first paragraph is reprinted below for your reference.

[ First paragraph ]

The main objective of GEON is to carry out continuously the measurement of electromagnetic waves in the extra low frequency (ELF) range of 1-100Hz excited by lightning discharges and to monitor global lightning activities. Using the ELF waveform data obtained by GEON, it is possible to estimate global occurrence locations and rates of lightning discharges and to deduce the charge moment changes, which is a proxy of the discharge energy. From the ELF waveform data, it is also possible to deduce a discharge current of lightnings, which occur within a few thousand kilometers from the GEON site. This innovative technique is a really powerful tool to monitor the lightning current, which will be a substitute for a huge and expensive Rogowskii coil measurement system.

-------------[ Please see the attached pdf for the full text.]

If you have recently installed equipment in the field, please send in your report to me for community-wide distribution.

Most cordially yours,
George Maeda
Editor of ISWI Newsletter


(1) Report: "Installation of GEON (Global ELF Observation Network)" at Kuju MAGDAS Station of Kyushu University, Japan 1 298 KB pdf, 6 pages, (click link to document)

If you want to read the original newsletter, click here.

To subscribe, send a blank message to ISWInewsletter-on[at]
To unsubscribe, send a blank message to ISWInewsletter-off[at]
To change email address, send a message to ISWInewsletter-change[at] with your old address in the Subject: line
To contact the list owner, send your message to ISWInewsletter-list-owner[at]
(it will get forwarded to the ISWI Newsletter Editor, who is George Maeda.)
ICSWSE, Kyushu University, Hakozaki Campus, Higashi-ku, Fukuoka, Japan.