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IPY2007-2008 ICESTAR program in Japan

ICESTAR kickoff meeting, Feb 5-9, 2007. IPY2007-2008 ICESTAR program in Japan. 1 Akira Kadokura , 1 Natsuo Sato, 1 Hisao Yamagishi, 1 Takehiko Aso, 1 Makoto Taguchi, 1 Masaki Tsutsumi, 1 Akira Yukimatsu, 1 Yasunobu Ogawa, 2 Kaoru Sato and 3 Yusuke Ebihara

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IPY2007-2008 ICESTAR program in Japan

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  1. ICESTAR kickoff meeting, Feb 5-9, 2007 IPY2007-2008 ICESTAR program in Japan 1Akira Kadokura, 1Natsuo Sato, 1Hisao Yamagishi, 1Takehiko Aso, 1Makoto Taguchi, 1Masaki Tsutsumi, 1Akira Yukimatsu, 1Yasunobu Ogawa, 2Kaoru Sato and 3Yusuke Ebihara 1 National Institute of Polar Research, Tokyo, Japan2University of Tokyo, Japan3Nagoya University

  2. EoI from NIPR for the ICESTAR/IHY EoI #422 Interhemispheric study on conjugacy and non-conjugacy of auroral and polar ionospheric disturbances using ground-based observation networkInterhemispheric Study on Auroral Phenomena Lead contact : Akira Kadokura (NIPR)(kadokura@nipr.ac.jp) • To maintain and intensify the Syowa – Iceland conjugate observations. • To develop the unmanned magnetometer network in the Antarctic. • To maintain other facilities at Syowa Station, including the two SuperDARN radars, etc.

  3. EoI from NIPR for the ICESTAR/IHY EoI #550Coordinated radar studies of the Arctic and Antarctic middle and upper atmosphere during IPY-4 period (CRSAAMU)  Radar studies of the Arctic and Antarctic middle and upper atmosphere Lead contact : Takehiko Aso (NIPR)(t-aso@nipr.ac.jp) • To do coordinated studies using MF radar, Meteo radar, EISCAT radar, etc.

  4. EoI from NIPR for the ICESTAR/IHY EoI #355Program of the ANtarctic SYowa MST (Mesosphere-Stratosphere-Troposphere) / IS (Incoherent Scatter) radar (PANSY) Antarctic MST/IS radar Lead contact : Masaki Tsutsumi (NIPR)(tutumi@nipr.ac.jp)Kaoru Sato (Univ. Tokyo)(kaoru@eps.s.u-tokyo.ac.jp) • To do feasibility studies for the MST/IS radar (PANSY)at Syowa Station

  5. Conjugate pair relating with our EoI #422 Geomagnetic mapping

  6. Conjugacy of Radiation Belt (a) Quiet time (b) Storm time

  7. Conjugate Observation at Syowa and Iceland EoI #422 by Natsuo Sato

  8. SYO2007 Aedey Tjornes SYO1984 Husafell Conjugate point of Syowa Station in Iceland (IGRF)

  9. HUS1984 HUS2007 Syowa TJR1984 TJR2007 AED1984 AED2007 Conjugate point of Iceland in the Antarctic (IGRF)

  10. Instruments at conjugate stations

  11. Flow of the Syowa - Iceland conjugate data by airafter 1 month Monitoring data, IRIO, All-sky TV ICELAND All-sky CCD imager ADSL NIPR Monitoring data, IRIO, HF, MF,ATV (webcamera) INTELSAT 1 Mbps All the data by shipafter 1 year SYOWA

  12. Syowa-Iceland Auroral Conjugate Observation • Starting from 1984 (22 year history) • Executed every year in the equinox season, mainly in September, for about 2 weeks • Simultaneous darkness for about 4 hours • Only 2～3 nights of simultaneous observation in one season, mainly due to weather condition • Good conjugate event is rare

  13. September 26, 2003 event :The best conjugate event in the 22 year historyObserved with All-sky TV (night-viewer) Iceland (Tjornes) SYOWA

  14. Other our target : Pulsating Aurora September 26, 2003 event Iceland (Tjornes) SYOWA

  15. Channel B Observation of the Pulsating auroraby the SuperDARN radar Channel A

  16. aurora alt 100 km radar height 100 km At Tjornes (66.20, -17.12) In Iceland a white-light all sky camera recording at 30-frames/sec .

  17. 02:50:00-03:20:00 UT, Nov. 25, 2005

  18. Observation of the Pulsating auroraby the SuperDARN radar 0310 – 0314 UT Radar velocity vsH-component beam 7 aligned Doppler velocity (2-sec values)

  19. For more quantitative longer period observation Well-calibrated monochromatic imager Fish-eye lens 16mm F2.8 L1 Relay lens L2 F1 Interference filter (λ＝557.7nm,FWHM～2nm) Imaging lens50mm F1.2 L3 CCD cameraC4488-37 512×512 Pixels ( 1pixel ~ 24μm ) 16Bit CCD camera controller PC

  20. Put in a temperature controlled box optics Heater Automatic moon mask Thermometer Stage controller CCD camera controller Cable hole Fan Thermostat×2,Sensor×2

  21. CAI (Conjugate Auroral Imager)

  22. Calibration using 2m Integrating sphere at NIPR 6

  23. 106 4π S(λ) =A ΩηG TL TF(λ) Sensitivity TF : transmissivity (filter) TL : transmissivity (lenz) η：CCD quantum efficiency [%] Ω：solid angle of 1 pixel G : gain [%] A : other constant S[cts/s/R/pixel] X [pixel] Y [pixel] Sensitivity (25℃)

  24. CAI : Installed at Husafell in 2005 Filter : 557.7 nm or 4278 nm Exposure time : 1 sec Interval : 6 sec Observation time : Solar Zenith Angle > 99° Operation : Automatic and Remote all through the season by M. Taguchi 9

  25. Now we can obtain auroral data at conjugate stations all through the year Conjugate Conjugate Iceland Syowa 3 4 2 10 8 month

  26. Develop the unmanned magnetometer network

  27. JARE-44 (2002-2004) BAS-LPM Skallen [69°40′24″S, 39°24′07″E] Cape Omega [68°34′39.4″S, 41°04′54.1″E] H100 [69°17'44"S, 41°19'15"E] Dome Fuji [77°19'01"S, 39°42'12"E] JARE-45 (2003-2005) BAS-LPM H100 [69°17'44"S, 41°19'15"E] Mizuho [70°42‘7.7"S, 44°17‘4.1"E] Middle Point [74°00’37.0"S, 42°59’30.4"E] Dome Fuji [77°19'01.6"S, 39°42’31.7"E] JARE-46 (2004-2006) NIPR-LPM S16 [69゜01’80“S, 40゜03‘ 65“E] JARE-48 (2006-2008) NIPR-LPMSkallen [69°40′24″S, 39°24′07″E] H57 [69°09‘38"S, 40°58‘52"E] NIPR-LPM in IPY Syowa H100 Mizuho Yamato Mt. SerRondane MD364 Dome Fuji Unmanned magnetometers in JARE

  28. Comparison of BAS and NIPR type LPMs

  29. NIPR-LPM http://polaris.nipr.ac.jp/~uap-mon/NIPR_LPM.html

  30. Dome Fuji BAS-LPMandAll-sky TVin 2003Middle scale evolution Syowa

  31. BAS-LPM and All-sky TV in 2003 : Small scale evolution

  32. Program of the Antarctic Syowa MST/IS Radar（PANSY)Mesosphere, Stratosphere and Troposphere/ Incoherent Scatter Radar K Sato, M Tsutsumi, T Sato, A Saito, Y Tomikawa,K Nishimura,T Aso, T Yamanouchi, M Ejiri PANSY is derived from the French word, ’pensee’, meaning ‘thought’

  33. Specifications of PANSY - Height coverage : 1～500km - Three dimensional winds and plasma parameters - Fine time and height resolutions

  34. Research Topics of PANSY The lack of observations in polar regions hinders quantitative understanding of the whole atmosphere

  35. Feasibility Study Field survey Syowa station Prototype power-efficient (class-E) amplifier Light-weight test antenna

  36. Pilot System for PANSY (2007-2008) Comprehensive test - Light-weight and robust antennas - Power-efficient class-E amplifiers Scientific study as a meteor wind radar as well

  37. … and Sometime in the Near Future Problem: Budget (~5,000 million yen), Power, Land The first MST/IS radar in the Antarctic

  38. Summary : Japanese activity for the ICESTAR • To maintain and intensify the Syowa – Iceland conjugate observations. • To transfer the data to Japan in near real time • To make the data accessible for the community more quickly and more easily. • To develop the unmanned magnetometer network in the Antarctic. • To maintain other facilities at Syowa Station, including the two SuperDARN radars, etc. • To do coordinated studies using MF radar, Meteo radar, EISCAT radar, etc. • To do feasibility studies for the MST/IS radar(PANSY)at Syowa

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