IPY2007-2008 ICESTAR program in Japan

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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 - PowerPoint PPT Presentation

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  • IPY2007-2008 ICESTAR program in Japan1Akira 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, Japan 2 University of Tokyo, Japan 3 Nagoya UniversityICESTAR kickoff meeting, Feb 5-9, 2007

  • EoI #422Interhemispheric study on conjugacy and non-conjugacy of auroral and polar ionospheric disturbances using ground-based observation network Interhemispheric Study on Auroral Phenomena

    Lead contact : Akira Kadokura (NIPR) (kadokura@nipr.ac.jp)EoI from NIPR for the ICESTAR/IHYTo 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.

  • EoI from NIPR for the ICESTAR/IHYEoI #550 Coordinated 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.

  • EoI from NIPR for the ICESTAR/IHYEoI #355 Program 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

  • Conjugate pair relating with our EoI #422Geomagnetic mapping

  • Conjugacy of Radiation Belt

    (a) Quiet time

    (b) Storm time

  • Conjugate Observation at Syowa and IcelandEoI #422by Natsuo Sato

  • Conjugate point of Syowa Station in Iceland (IGRF)

  • Conjugate point of Iceland in the Antarctic (IGRF)

  • Instruments at conjugate stations

    SYOHUSTJRAEDFluxgate magnetometerInduction magnetometerRiometerVLF receiverImaging RiometerAll-sky TV camera (night-viewer)All-sky monochromatic ImagerMeridian Scanning PhotometerFabry-Perot ImagerSuperDARN radarMF-radarIonosonde (NiCT)VHF Doppler radar (NiCT)FM/CW radar (NiCT)

  • Flow of the Syowa - Iceland conjugate dataNIPRby air after 1 monthADSLby ship after 1 yearINTELSAT 1 MbpsMonitoring data, IRIO, All-sky TVAll-sky CCD imagerAll the dataMonitoring data, IRIO, HF, MF, ATV (webcamera)SYOWAICELAND

  • Syowa-Iceland Auroral Conjugate ObservationStarting 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 23 nights of simultaneous observation in one season, mainly due to weather condition Good conjugate event is rare

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

  • Other our target : Pulsating AuroraSeptember 26, 2003 event Iceland (Tjornes)SYOWA

  • Observation of the Pulsating auroraby the SuperDARN radar

  • At Tjornes (66.20, -17.12)In Iceland a white-light all sky camera recording at 30-frames/sec .

    aurora alt 100 kmradar height 100 km

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

  • 0310 0314 UTbeam 7 aligned Doppler velocity (2-sec values)Radar velocity vs H-componentObservation of the Pulsating aurora by the SuperDARN radar

  • For more quantitative longer period observation Well-calibrated monochromatic imagerFish-eye lens 16mm F2.8Relay lensInterference filter (557.7nm,FWHM2nm)F1L3L1L2Imaging lens50mm F1.2CCD cameraC4488-37512512 Pixels ( 1pixel ~ 24m )16BitCCD cameracontrollerPC

  • Put in a temperature controlled boxThermostat2,Sensor2opticsCCD camera controllerAutomatic moon maskStage controllerFanThermometer HeaterCable hole

  • CAI (Conjugate Auroral Imager)

  • Calibration using 2m Integrating sphere at NIPR6

  • SensitivitySensitivity (25)Y [pixel]X [pixel]S [cts/s/R/pixel]TF : transmissivity (filter)TL : transmissivity (lenz) CCD quantum efficiency [%]solid angle of 1 pixelG : gain [%]A : other constant

  • CAI : Installed at Husafell in 2005 9Filter : 557.7 nm or 4278 nmExposure time : 1 secInterval : 6 secObservation time : Solar Zenith Angle > 99Operation : Automatic and Remote all through the seasonby M. Taguchi

  • Now we can obtain auroral data at conjugate stations all through the year381024IcelandSyowaConjugateConjugatemonth

  • Develop the unmanned magnetometer network

  • MizuhoDome FujiSyowaYamato Mt.H100MD364Unmanned magnetometers in JARESerRondane

  • Comparison of BAS and NIPR type LPMs

    BAS-LPMNIPR-LPMMagnetometerMAG-03MCMAG-03MCResolution16 bit16 bitNoise level1 nT0.2 nTLow Pass Filter100 Hz15 HzPower consumption (1 sec sampling)0.42 W0.16 WData acquisitionFlash memory cardIridium satellite Flash memory cardCommand sending

  • NIPR-LPMhttp://polaris.nipr.ac.jp/~uap-mon/NIPR_LPM.html

  • BAS-LPMandAll-sky TVin 2003

    Middle scale evolutionDome FujiSyowa

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

  • Program of the Antarctic Syowa MST/IS RadarPANSY)Mesosphere, Stratosphere and Troposphere/ Incoherent Scatter Radar K Sato, M Tsutsumi, T Sato, A Saito, Y Tomikawa,K Nishimura,T Aso, T Yamanouchi, M EjiriPANSY is derived from the French word, pensee, meaning thought

  • Specifications of PANSY- Height coverage : 1500km- Three dimensional winds and plasma parameters- Fine time and height resolutions

    SystemPulse Doppler radar. Active phased array systemCenter freq. 50MHAntennaA quasi-circular array consisting of about 1000 crossed Yagi antennas. Diameter about 160mTransmitterAbout 1000 solid-state TR modulesPeak Power : 500kWReceiverAbout 50 channel digital receiving system

  • The lack of observations in polar regions hindersquantitative understanding of the whole atmosphereResearch Topics of PANSY

  • Feasibility StudyField surveySyowa stationLight-weight test antennaPrototype power-efficient (class-E) amplifier

  • 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

  • and Sometime in the Near FutureThe first MST/IS radar in the AntarcticProblem: Budget (~5,000 million yen), Power, Land

  • To maintain and intensify the Syowa Iceland conjugate observations. To transfer the data to Japan in near real timeTo 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 SyowaSummary : Japanese activity for the ICESTAR