Japanese URSI Commission H Activity Report

June 15, 2001

Y. Omura, T. Okada, and H. Matsumoto


1. Research Project


 (R-1)  NOZOMI
The NOZOMI spacecraft, carrying the instruments for plasma wave measurements in ELF/VLF/MF/HF bands and sounder experiments, is on the cruising orbit to Mars. The insertion to the Martian orbit is scheduled in January 2004.

The GEOTAIL spacecraft has been operated without any major troubles. The spacecraft is expected to be in a good condition at least until the next long eclipse in 2002.

 (R-3)  EXOS-D
The EXOS-D (Akebono) spacecraft has attained the 12 years of successful operation without any major troubles. The regular data acquisition is continued at stations in Japan, Sweden and Canada, although the tracking from Syowa Station, Antarctica was terminated in autumn 2000.

(R-4)  Balloon experiment in Antarctica
NIPR is planning to carry out a long-duration balloon experiment to be done during late December in 2002 to middle February in 2003. Four Zero-pressure stratospheric balloons will be launched from Syowa Station, one for cosmic ray and 3 for upper atmosphere physics observation including magnetospheric electrodynamics and wave phenomena. In the latter experiment, the balloons installed with identical instruments will be launched successively to form a formation flight in order to separate the spatial and temporal variations of the phenomena occurring in the boundary regions in the magnetosphere. It will take 20-30 days for the balloon to make a circum-polar flight.

(R-5) ELF wave observation at Syowa station, Antarctica

ELF magnetic field observations in the frequency range of 1-500 Hz have been carried out at Syowa station since February 2000, using two horizontal search coil magnetometers. Good waveform of ELF transients were observed in correspondence with sprites and elves identified in the northern hemisphere.


(R-6) HF and MF radars at Syowa Station, Antarctica

HF and MF radars at Syowa Station are operated continuously in good condition.

2.   Domestic Conferences and Workshops

The 8th GEOTAIL SWG/Workshop, February 28 - March 2, 2001, ISAS, Kanagawa
RASC/KDK Simulation Symposium, March 8-9, 2001, Uji
SGEPSS Plasma Wave Workshop on Neural Networks, Shocks and Colonal Heating,  

March 19, 2001,Fukui
Workshop for the long-duration balloon experiment in the antarctica, March 29,

2001 at NIPR, Tokyo
2001 Japan Earth and Planetary Science Joint Meeting, June 4-8, 2001, Tokyo.

3.  International Conferences and Workshops

EGS, 26th General Assembly, March 25-30, 2001, Nice, France
SuperDARN workshop, May  21-25, 2001, Rome, Italy
AGU Spring Meeting, May 29-June 2, Boston Mass, USA
SuperDARN workshop, May, 2002, Alaska, USA.

4.  Future Meetings

Fourth International Workshop on Nonlinear Waves and Chaos in Space Plasmas, June

17-22, 2001, Tromso, Norway
The Sixth International Workshop on Interrelationship between Plasma Experiments

in the Laboratory and Space (IPELS-2001), Niseko,  July 2-6, 2001, Hokkaido, Japan.
25th International Conference on Phenomena in Ionized Gases (ICPIG), July 17-22,

2001, Nagoya, Japan
10th International EISCAT Workshop, July 23-27, 2001, Itabashi, Tokyo, Japan
The 25th Symposium on coordinated observations of the ionosphere and the

magnetosphere in the Polar Regions, July 30-31, 2001, Itabashi, Tokyo, Japan.
AP-RASC'01, August 1-4, 2001,Tokyo, Japan.
IAGA-IASPEI Joint Scientific Assembly, 18-30 August 2001, Hanoi, Vietnam.
The Sixth International School/Symposium for Space Plasma Simulations (ISSS-6),

September 3-8, 2001, Garching, Germany.