Subject: Re: Collab between RAPID and WBD: Chorus Studies on Cluster From: zong Date: Fri, 09 Jul 2004 15:34:45 -0400 To: Jolene Pickett CC: Geoff Reeves , "RAPID Team (LANL)" , Ondrej Santolik , Nigel Meredith Dear Jolene I have plot the RAPID data in the time interval you are interested for different energy channels for C1. See the attachments. 1. July 24, 2003 RAPID-IES electron fluxes are rather flat, this is consistent with Geoff comments on the LANL-GEO data. 2. Oct. 31, 2003 "Halloween" storm period is particular interesting event in the energetic particle point of view. We have burst mode data (NM3) as well for this day. RAPID-IES observed regular electron flux pulse from 2130 to 2230 UT. 3. Dec. 6, 2003 RAPID -IES caught a clear and very strong substorm injection signature at around 1528UT (L=4.5-4.9). This might be a "Substorm-Associated Chorus". Maybe Geoff have more comments on this events. regards Zong Geoff Reeves wrote: Jolene, Ondrej, I just glanced at the data for 7/24/03 quickly. This might be a signature of what Andy Smith has been calling "Substorm-Associated Chorus" [Smith, A. J., M. P. Freeman, and G. D. Reeves, Postmidnight VLF chorus events: A substorm signature observed at the ground near L=4, J. Geophys. Res., 101, 24,641-24,653, 1996. http://www.agu.org/journals/ja/ja9611/96JA02236.pdf] But I looked at the LANL-Geo data for that day and although there is an injection around 01:35 UT (when the falling frequency chorus is seen) the injection is really tiny. The local time (around 15 MLT) is about right. The energies you mentioned are also about the same as what Andy found and the L-shells for Cluster are also in the right range (4-6). I'd be happy to look at the other events and contribute if you think it's useful. Geoff At 9:09 AM -0500 7/9/04, Jolene Pickett wrote: Dear Zong, I apologize for not typing the correct links. I should have used cut and paste, which is much more reliable than my typing. Here are the correct links http://www-pw.physics.uiowa.edu/~jsp/cluster/chorus/nigel/ http://www-pw.physics.uiowa.edu/~jsp/cluster/chorus/nigel1/ We look forward to working with you on the studies of chorus using Cluster data.. Best regards, Jolene zong wrote: Jolene, I am interested to join this study. > http://www-pw.physics.uiowa.edu/~jsp/cluster/nigel (WBD data) > http://www-pw.physics.uiowa.edu/~jsp/cluster/nigel1 (PEACE data) Those are dead links! Would you mind check them. Thanks Zong _____________________________________________________ "Zong" Q.-G. Zong, Center for Space Physics, Boston University 725 Commonwealth Avenue, Boston, Massachusetts 02215 Tel:617 353 7448, Fax:617 353 6463, Room: 501 http://people.bu.edu/zong/ >Daly Dr., Patrick wrote: > Dear RAPID Team, > > At the SOWG in Garching last week, Jolene Pickett, the WBD representative for > Don Gurnett, asked me if anyone on the RAPID Team would be interested in > collaborating with them on some selected events. I said that if she sent me > some dates, I would send then around to the Team. I myself will not be able > to work on this, but some of you might be interested. > > Please let me and the rest of the Team know if you do reply to Jolene. > > Next RAPID Team Meeting: > Just to make it official to those who were not at the last one, the next > meeting will be held at BU, host Ted Fritz, on the weekend (yes weekend) > before the Cluster workshop at the Univ of New Hampshire. This is Sept 25-26. > > Best regards, > Patrick > > ----------------------------------------------------------------------------- > Dr. Patrick W. Daly Tel. [+49] 5556-979-279 > MPI fuer Sonnensystemforschung (MPS) Fax. [+49] 5556-979-240 > Max-Planck-Str. 2 Mob. [+49] 175-162-1811 > D-37191 Katlenburg-Lindau Email: daly@linmpi.mpg.de > Germany > ----------------------------------------------------------------------------- > -----Original Message----- From: Jolene Pickett [mailto:pickett@uiowa.edu] Sent: Friday, July 02, 2004 17:35 To: Daly Dr., Patrick Cc: Ondrej Santolik; Nigel Meredith; Jolene Pickett; Donald A. Gurnett; Andrew Fazakerley Subject: Chorus Studies on Cluster Dear Patrick, Per our conversation in Munich, I am informing you of the three dates that were agreed upon with PEACE for joint study of chorus waves and their generation. They are: July 24, 2003 October 31, 2003 (a Halloween event) December 6, 2003 We chose these three events because WBD sees interesting chorus on all 4 spacecraft and the PEACE instruments see interesting fluxes and are not saturated as they sometimes are during perigee passes. Involved in the selection were Andrew Fazakerley, Nigel Meredith and myself. We feel that sometimes the particles involved in the generation of the chorus waves may be near the top of the PEACE energy band and near the lower end of the RAPID energy band. Therefore, we think it is desirable to include a RAPID investigator in these studies. If you would like to see the overviews of the WBD and PEACE data for these events, they are at: http://www-pw.physics.uiowa.edu/~jsp/cluster/nigel (WBD data) http://www-pw.physics.uiowa.edu/~jsp/cluster/nigel1 (PEACE data) Could you give us the name of someone on your team who might be interested in working with us on these chorus studies? Although I am cooridnating some of the work, I am not actually the main scientist doing the work. Dr. Ondrej Santolik, of Charles University in Prague and who has regularly spent the summers here in Iowa working with us for the last few years, together with Don Gurnett are primarily the leaders of this work. Along that line, I should mention that Ondrej has already gotten some RAPID data for a specific chorus event that Ondrej has previously studied and published. The fellow Ondrej worked with was Prof. Karel Kudela of Kosice, Slovakia, whom I believe was working through consultation with your Co-I, Dr. Karoly Kecskemety of Budapest. If it would be acceptable to you, Ondrej could continue to work with Prof. Kudela on these new events with the WBD and PEACE teams, or you can suggest someone else on your team who may be wishing to work on chorus events. It seems you should now be officially working at MPS. Congratulations. I don't suppose it will make too much difference in your daily work life. It was nice to see you again this week in Munich. Thanks in advance for your help. Best regards, Jolene -- +-------------------------------------------------------------------------------------------------+ | Geoff Reeves: | Group Leader, Space Sciences Group, ISR-1 | Mail Stop D-466, Los Alamos National Laboratory | Los Alamos, New Mexico, 87545, USA | | e-mail: reeves@lanl.gov | www: http://leadbelly.lanl.gov/reeves.html | 505-665-3877, Phone | 505-667-2701, Secretary | 505-665-7395, Fax +-------------------------------------------------------------------------------------------------+ -- _____________________________________________________ "Zong" Q.-G. Zong, Center for Space Physics, Boston University 725 Commonwealth Avenue, Boston, Massachusetts 02215 Tel:617 353 7448, Fax:617 353 6463, Room: 501 http://people.bu.edu/zong/