ICESTAR program in Japan during IPY2007-2008

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  • ICESTAR program in Japan during IPY2007-20081Akira Kadokura, 1Natsuo Sato, 1Takehiko Aso, 1Hisao Yamagishi, 1Hiroshi Miyaoka, 1Makoto Taguchi, 1Masaki Tsutsumi, 1Yasunobu Ogawa, 1Akira-S Yukimatsu, 1Masaki Okada, 1Yoshihiro Tomikawa, 1SatokoTakasaki, 2Yusuke Ebihara, 3Keisuke Hosokawa, and 4Kaoru Sato

    1 National Institute of Polar Research, Tokyo, Japan 2 Nagoya University3 University of Electro-Communications4 University of Tokyo, Japan

  • ICESTAR / IHYICESTAR: Interhemispheric Conjugacy Effects in Solar-Terrestrial and Aeronomy ResearchIHY: International Heliophysical Year

    Presented as Expression of Intent (EoI) for IPY2007-2008. Merged into ICESTAR/IHY as one of the core projects.

    Title of activity : ICESTAR/IHY - Interhemispheric Conjugacy in Geospace Phenomena and their Heliospheric Drivers ICESTAR co-chairs: Kirsti Kauristie (FMI) Allan Weatherwax (Siena College)

  • Four Thematic Action Groups of ICESTARA. Quantify and understand the similarities and differences between the Northern and Southern polar upper atmospheres. Contact : Martin Fullekrug (University of Bath, U.K.) B. Quantify the effects on the polar ionosphere and atmosphere of the magnetospheric electromagnetic fields and plasma populations. Contact : Eftyhia Zesta (UCLA, USA) C. Quantify the atmospheric consequences of the global electric circuit and further understand the electric circuit in the middle atmosphere. Contact : Scott Palo (University of Colorado, USA) , Nikolai stgaard (University of Bergen, Norway) D. Create a data portal that will integrate all of the polar data sets and modeling results. Contact : Aaron Ridley (University of Michigan, USA) , Allan Weatherwax (Siena College)

  • EoI #422Interhemispheric study on conjugacy and non-conjugacy of auroral and polar ionospheric disturbances using ground-based observation network Interhemispheric Study on Auroral PhenomenaLead contact : Akira Kadokura (NIPR) ( (Expression of Intent) from NIPR for the ICESTAR/IHY

  • EoI #422To maintain and intensify the conjugate observation network in both hemispheresSyowa Iceland conjugate pairUnmanned magnetometer network in AntarcticaSuperDARN HF-radar networkImaging Riometer networkSouth Pole Canada pair, Zhongshan Svalbard pairTo contribute to the international Data portal, Virtual observatory project with supplying our data in near-real time

  • EoI #550 Coordinated radar studies of the Arctic and Antarctic middle and upper atmosphere during IPY-4 period (CRSAAMU) Lead contact : Takehiko Aso (NIPR) ( do coordinated studies using MF radar, Meteo radar, EISCAT radar, etc.

  • EoI #355 Program of the ANtarctic SYowa MST (Mesosphere-Stratosphere-Troposphere) / IS (Incoherent Scatter) radar (PANSY)Lead contact : Kaoru Sato (Univ. Tokyo) ( do feasibility studies for the MST/IS radar (PANSY) at Syowa Station

  • Conjugate pair relating with our EoI #422Geomagnetic mapping

  • Conjugate Observation at Syowa and Iceland

  • Conjugate point of Syowa Station in Iceland (IGRF)Tjornes

  • 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

  • TJRSYWTJRSYWMNSWENMSWESeptember 26, 2003 event : The best conjugate event in the 22 year history Observed with All-sky TV

  • 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) 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 -LPMIridium satelliteTransmit time (1 sec sampling) : about 20 min for 1 day dataFieldNIPR


  • BAS-LPMandAll-sky TVin 2003

    Middle scale evolutionDome FujiSyowa

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

  • HF-radar network in the both hemisphere SuperDARN

  • Polar Mesosphere Summer Echoes (PMSE) observed by SuperDARN Morphological featuresStrong radar backscatterAltitude : around 86kmIn summer polar regionLow Doppler velocity and narrow width

  • Conjugate study of the PMSE by SuperDARNHosokawa et al., GRL, 2005

  • Observation of the Pulsating aurora by the SuperDARN radar

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

  • All-Sky Imager at South PoleSyowa-SouthSanaeHalley BayFOV of All-Sky Imager at South Pole at 120 km

  • ConjugateObservationbetween South Poleand Iqaluit(planned)Project team: Y. Ebihara, N. Sato, et al. (NIPR, Japan) A.T. Weatherwax (Siena College, USA)

    P.T. Jayachandran (Univ. of New Brunswick, Canada)

  • 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

  • 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

  • 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. To do coordinated studies using MF radar, Meteo radar, EISCAT radar, etc.To do feasibility studies for the MST/IS radar (PANSY) at SyowaTo transfer the data to Japan in near real timeTo make the data accessible for the community more quickly and more easily.Summary : Japanese activity for the ICESTAR