ISWI Newsletter - Vol.4 No.107
24 October 2012

Dear ISWI Participant:

There three news items today:

(1) As briefly mentioned in "ISWI Newsletter" Volume 4, Number 102, the "2012 ISWI and MAGDAS School on Space Science" (hosted by LAPAN of Indonesia) was a great success. All the lecture notes and some event photos are now available at this website: Check it all out !!!
Please be informed that this ISWI school was No. 3. (No. 1 was in Ethiopia two years ago, and No. 2 was in Slovakia last year; school reports for No. 1 and No. 2 can be found in the ISWI Newsletter archives.) This school is intended to be an annual event. School No. 4 will take place in Africa next year. Stay tuned to this newsletter for details.

(2) The following note was received from Dr Morris Cohen of Stanford University. The two papers that he refers to are attached to this email (in the usual fashion). Note that AWESOME is one of the major ISWI instrument arrays. I am pleased to see his results today ! .... thank you Morris for sending this in.

Hi George,

I think it's time we spotlight a contribution from the AWESOME network.

I'm attaching two papers that use the AWESOME network to discuss so-called "long recovery events". These are D-region ionospheric disturbances cause directly above powerful lightning strokes that can take many minutes to recover from. They are distinct because most ionospheric disturbances from lightning (known as "early VLF events") decay away within a couple minutes, with the exception of an apparently distinct class which last much longer. There have been two papers published in the past couple months that utilize the AWESOME/IHY/ISWI array to study these phenomenon.

Here are the links:
Webmaster Notes: The above two articles are attached to this Newsletter. See below.

Thanks and I hope the Ecuador meeting went smoothly.


Friday, 19 Oct 2012
Dr. Morris B. Cohen
Stanford University
350 Serra Mall, Room 315
Stanford, CA 94305 USA

(3) SARA (Society of Amateur Radio Astronomers) has become a regular contributor to this newsletter. Attached as pdf is a short report on their contributions to space weather. Consider joining SARA as it is only 20 USD per year.

Please encourage your space weather colleagues and students to subscribe to the ISWI Newsletter, which is now in its fourth year of publication here at Kyushu University in beautiful Fukuoka in southern Japan. This newsletter exists to circulate information for the entire ISWI community.

Most respectfully yours,
George Maeda
Editor of ISWI Newsletter
Hakozaki Campus, Kyushu University, Japan.


(1) M. M. Salut, M. Abdullah, K. L. Graf, M. B. Cohen, B. R. T. Cotts, Sushil Kumar Long recovery VLF perturbations associated with lightning discharges, JGR, VOL. 117, A08311, 2012 DOI: 10.1029/2012JA017567 901 KB pdf, 6 pages, (click )

(2) Christos Haldoupis, Morris Cohen, Benjamin Cotts, Enrico Arnone, Umran Inan Long-lasting D-region ionospheric modifications, caused by intense lightning in association with elve and sprite pairs, GRL, VOL. 39, L16801, 2012 DOI: 10.1029/2012GL052765 768 KB pdf, 7 pages, (click )

(3) Whitham D. Reeve SARA’s Contributions to Space Weather, 974 KB pdf, 3 pages, (click )

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