Stations, Instruments, and Acknowledgements


                   

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   GEOGRAPHIC AND GEOMAGNETIC COORDINATES
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calculation: dipole geomagnetic coordinates (IGRF model) 
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      glat   glon    mlat   mlon  inclination  declination  collaborators
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ATH   54.60 246.36   61.2   307.2      76.15      15.7   U.Athabasca/Kanazawa U.
KAP   49.39 277.81   58.7   347.6      74.17     -10.19  Virginia Tech.
MSR   44.37 142.27   35.6   209.5      58.58      -9.5   ISEE Observatory/Chiba U.  
KAG   31.48 130.72   21.9   200.6      45.1       -6.1   ISEE Observatory/Chiba U. 
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------ Current Configuration -----------

Athabasca (ATH), Canada : 54.7N, 246.7E
    VLF/ELF crossed loop antenna (Create Design, HR130C) (Feb.19, 2012-): 
          10turn, 5-m height, 100kHz sampling, sensitivity peak at 8kHz 
          ch.1: VLF-NS, ch.2: VLF-EW, ch.3: riometer, ch.4: GPS 1pps
          ch:1(VLF-NS): E-W antenna measureing NS magnetic field variation 
          ch:2(VLF-EW): N-S antenna measureing EW magnetic field variation
          1 datafile = 9min50s = 472,000,032Bytes 
                  (100kHz sampling, 4ch, 2Byte, 10Volt=65536digit). 
     Feb 27-Sept.22, 2012: noisy operation near the AUGSO building (no data) 
     On Nov.12, 2015, 0530UT, the sampling rate was reduced from 100kHz to 40kHz. 
     On Oct.26, 2016, 2350UT, the channel is reduced from 4ch to 3ch 
                                (riometer channel is removed).

Kapuskasing (KAP), Canada : 49.39N, 277.81E
    VLF/ELF crossed loop antenna (Create Design, HR130C) (Dec.12, 2016-):
          10turn, 5-m height, 40kHz sampling, sensitivity peak at 8kHz
          ch.1: VLF-NS, ch.2: VLF-EW, ch.3: GPS 1pps
          ch:1(VLF-NS): E-W antenna measureing NS magnetic field variation
          ch:2(VLF-EW): N-S antenna measureing EW magnetic field variation
          1 datafile = 9min50s = 141,600,032Bytes 
                  (40kHz sampling, 3ch, 2Byte, 10Volt=65536digit)

Moshiri (MSR or MOS), Japan : 44.37N, 142.27E
    Valley antenna (1980 - Aug.28, 2009) 
          1962: VLF wave observation was started at Moshiri 
          1980: Data tansfer started using 10-km optical fiber from the 
                Valley antenna to the observatory building 
    VLF/ELF crossed loop antenna with a 43-m tower (Aug.28, 2009-) 
          1ch, 20kHz sampling, sensitivity peak at 5kHz 

Kagoshima (KAG) : 31.48N, 130.72E
    Valley antenna (April 1976 - 2001) at Sarugajo (main) and Maenohama 
         triangle shape 90m(W) x 50m x 50m 
         Maenohama antenna was closed on March 1999.  
         Sarugajo antenna was closed in 2001.
    VLF/ELF crossed loop antenna (2-turn) with a ~15m tower (2001-Oct.2009)
    VLF/ELF crossed loop antenna (2-turn) with a 13.9m tower (Oct.19, 2009-)
          sensitivity peak at 2-8kHz with a notch at 7kHz. 
          recording: analogue tape: 1976-2003, analogue Mini disk: 2004-2007
             digital data (2008-): 1ch (VLF-EW = NS antenna), 20kHz sampling 

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Acknowledgements:

The ISEE VLF/ELF receivers have been developed and operated with 
skillful supports by Toshirou Kotoh, Mitsugi Satoh, Yasuo Katoh, 
Yoshiyuki Hamaguchi, and Yuka Yamamoto, all are technical staff 
of the Solar-Terrestrial Environment Laboratory (STEL) and 
Institute for Space-Earth Environmental Research (ISEE), Nagoya University.
The routine construction system of the spectral plots in this 
web site was developed by Yu Yokoyama and Professor Yuichi Otsuka 
of ISEE. 

The Valley antennas at Kagoshima and Moshiri were developed by 
a leadership of late Professor A. Iwai, Research Institute of 
Atmospherics, Nagoya University.  

The VLF/ELF observation at the Kagoshima Observatory of STEL had been 
continuously supported by late Takasuka (until 1990) and 
late Koichi Hidaka (until 2007).  Both were the technical staff 
of STEL.  H. Kogushi and O. Hayashi made the tape list and 
digitize the tapes since 2007. 

The VLF/ELF observation at the Moshiri Observatory of STEL/ISEE had been
continuously supported by Masayuki Sera and Yuji Ikegami.  
Both are the technical staff of STEL/ISEE. 

The VLF/ELF observations at Kagoshima and Moshiri are carried out 
in collaboration with Dr. Hiroyo Ohya of the Chiba University. 

The VLF/ELF loop antenna at Athabasca, Kapuskasing, Canada, and 
Zhigansk, Russia, has been developed by Dr. Mitsunori Ozaki
and Professor Satoshi Yagitani of the Kanazawa University,
in collaboration with Professor Natsuo Sato,  
Professor Hisao Yamagishi, and Dr. Akira Kadokura of the 
National Institute of Polar Research.  

The routine observation at Athabasca is carried out at the AUGO-II 
(AUGSO) observatory of Athabasca University.  We thank 
Professor Martin Connors, Dr. Ian Schofield, Mr. Kyle Reiter, and 
all the staff of the Athabasca University for their kind and 
helpful supports.

The VLF/ELF loop antennae at Nain, Gakona, and Istok, has been 
developed by Dr. Mitsunori Ozaki of the Kanazawa University through 
the PWING project.  

This observation and database construction have been supported by:
(a) Grant-in-Aid for Scientific Research (20244080, 23403009, and 16H06286) 
    of the Ministry of Education, Culture, Sports, Science 
    and Technology of Japan,
(b) Geospace Research Center of STEL.



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