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from Dec. 1, 2011
Total : 285714285714285714285714285714285714

Polar Environment Data Science Center

National Institute of Polar Research

Joint Supprt-Center for Data Science Research

Research Organization of Information and Systems

Sience Field

Governmental Institutions => National Institute of Information and Communications Technology(NICT)
Monitoring => Governmental Institutions
IPY => Governmental Institutions

Overview  
Title Radio aurora records
Sub-Title Echo intensity and Doppler velocity of radio auroral echoes
Data Summary Auroral radar observations at Syowa Station have been continued since 1966 as one of the regular ionospheric observations. The first observation with 112.2 MHz auroral radar was carried out by the PPI (plan position indication) method; radio auroral echoe returns were recorded on 16 mm film (Hasegawa and Shiro, 1970). The second auroral radar had four frequencies, 50, 65, 80, and 112 MHz, and investigated the frequency dependence of radio auroral echoes. This radar was modified in order to measure the Doppler spectra of backscattered echoes in 1978 (Igarashi et al., 1981). In 1981 a new auroral Doppler radar was developed by Igarashi et al.(1982). Since then the continuous Doppler spectra measurements of backscattered echoes at two frequencies, 50 MHz and 112 MHz, have been conducted along two fixed beam directions by coaxial collinear antenna with about 4 degree beam width. In order to cover the whole echo region a new 50 MHz scanning-beam auroral radar with two sets of array antenna
About Observation  
Spatial Coverage
Data Location
Observaion Period /
Temporal Coverage		 1966 - 2010
Data Period 1966 - 2010
Observation Photo
Data Details  
Data Name Radio Aurora Records (Echoe Amplitude and Doppler Velocity)
Data Format Digital records, Analog records, Chart records, Film records
Data Recording /
Acquisition Sampling		 Continuous recordings, 7 sec (Data integration time). 5 degree (beam direction step for 50 MHz auroral radar), 3 degree (beam direction step for 112 MHz.auroral radar)
Observation Instruments 112.2 MHz auroral radar, Four frequency (50, 65, 80, and 112 MHz) auroral radar, Auroral Doppler radar at 50 MHz and 112 MHz, 50 MHz Scanning-beam auroral radar system, 112MHz auroral radar.
Sample Data
Publication  
Publication method http://wdc.nict.go.jp/IONO/
Metadata/AMD: Radio Aurora Records at Syowa Station

Data Policy
Data Center
(Contact Person)		 National Institute of Information and Communications Technology (Hideo Maeno)
E-mail syo_iono (at) ml.nict.go.jp
Related Organization National Institute of Polar Reseach (NIPR)
Scientific Results /
Publication		 Hasegawa, S and I. Shiro, Spatial and temporal distribution of radar auroras over Syowa Station, Antarctica, J. Radio Res. Lab., 17, 137-146, 1970.
Igarashi, K and S. Tsuzurahara, Spatial correlations between radio aurora and 4278 A aurora intensity, Mem. Matl Inst. Polar Res., Spec. Issue, 18, 204-211, 1981.
Igarashi, K., T. Ogawa, S. Tsuzurahara, I. Shiro, M. Ose, and H. Yamagishi, Simultaneous observations of aurora with a Doppler-radar and sounding rockets. Mem. Natl Inst. Polar Res., Spec. Issue, 18, 391-402, 1981.
Ogawa, T., and K. Igarashi, VHF radar observation of auroral E-region irregularities associated with moving-arcs, Mem. Natl Inst. Polar Res., Spec. Issue, 22, 125-139, 1982.
Igarashi, K., T. Ogawa, M. Ose, R. Fujii, and T. Hirasawa, A new VHF doppler radar experiment at Syowa Station, Antarctica. Mem. Natl Inst.Polar Res., Spec. Issue, 22, 258-267, 1982.
Ogawa, T., K. Igarashi, M. Ose, Y. Kuratani, R. Fujii, and T. Hirasawa, Preliminary results of new 50MHz doppler radar experiment at Syowa Station, Mem. Natl Inst. Polar Res., Spec. Issue, 26, 193-201, 1983.
Igarashi, K., T. Ogawa, T. Tanaka, and Y. Kuratani, VHF radar observation of the middle atmospehre at Syowa Station, Antarctica, MAP symposium, Kyoto, 1984.
Ogawa, T., K. Igarashi, Y. Kuratani, R. Fujii, and T. Hirasawa, Some initial results of 50MHz meteor radar observation at Syowa Station, Mem. Natl Inst. Polar Res., Spec. Issue, 36, 254-263, 1985.
Igarashi, K., T. Ogawa, Y. Kuratani, R. Fujii, and N. Sato, 50MHz auroral doppler radar observations associated with Pc 5 geomagnetic pulsations, Mem. Natl Inst. Polar Res., Spec. Issue, 36, 104-113, 1985.
Igarashi, K., T. Ogawa, Y. Kuratani, R. Fujii, and T. Hirasawa, Aurora observation using the Syowa Station50-MHz doppler radar, J. Radio Res. Lab., Spec. Issue, 1, 269-277, 1986.
Ogawa T., H. Yamagishi, I. Ayukawa, T. Tanaka, and K. Igarashi, Simultaneous observation of radar aurora and visible aurora over Mizuho Station, Proc. NIPR Symp., Upper Atmos. Phys., 2, 103-109, 1989. Ogawa, T., A. Nomura, T. Tanaka, and K. Igarashi, Simultaneous measurements of Antarctic mesospheric gravity waves by meteor radar and Lidar, J. Geomag. Geoelectr., 41, 835-849, 1989.
Igarashi, K. and T. Ogawa, Some features of echo amplitude and Doppler spectrum in the 50MHz auroral radar echoes observed near the edge of auroral arc, Proc. XXIVth URSI General Assembly, 1993.
Igarashi, K., K. Ohtaka, M. Kunitake, T. Tanaka, and T. Ogawa, Development of scanning-beam VHF auroral radar system (Extended abstract), Proc. NIPR Symp. Upper Atmos. Phys., 8, 65-69, 1995.
Igarashi, K., K. Ohtaka, M. Kunitake, and T. Kikuchi, Scanning-beam VHF auroral radar at Syowa Station (Extended abstract), Proc. NIPR Symp. Upper Atmos. Phys., 11, 154-158, 1998.
Koustov, A. V., K. Igarashi, D. Andre, K. Ohtaka, N. Sato, H. Yamagishi, and A. Yukimatu, Observations of 50- and 12-MHz auroral coherent echoes at the Antarctic Syowa station, J. Geophys. Res., 106(A7), 12,875? 12,887, 10.1029/2000JA000165, 2001.
Makarevitch, R. A., T. Ogawa, K. Igarashi, A.V. Koustov, N. Sato, K. Ohtaka, H. Yamagishi, and A. Yukimatu, On the power-velocity relationship for 12- and 50-MHz auroral coherent echoes, J. Geophys. Res., 106(A8), 15,455-15,469, 10.1029/2000JA000330, 2001.
Makarevitch, R. A., A. V. Koustov, K. Igarashi, K. Ohtaka, T. Ogawa, N. Nishitani, N. Sato, H. Yamagishi, and A. S. Yukimatu, Comparison of flow angle variations of E-region echo characteristics at VHF and HF, Adv. Polar Upper Atmos. Res., 16, 59-83, 2002.
Digital Object Identifier(DOI)
Creator Hideo Maeno
Publisher National Institute of Polar Research
Copyright @ National Institute of Polar Research