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NOAA data : >30keV electron

S outh America Riometer Network (SARINET) Kazuo Makita (Takushoku University, Japan ). We study upper atmosphere phenomena in South Atlantic Geomagnetic Anomaly ( SAGA) since 1997. So far, we installed several instruments at more than 10 stations in South America.

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NOAA data : >30keV electron

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  1. South America Riometer Network (SARINET) Kazuo Makita (Takushoku University, Japan) We study upper atmosphere phenomena in South Atlantic Geomagnetic Anomaly (SAGA)since 1997. So far, we installed several instruments at more than 10 stations in South America. Riometer / Imaging riometer is mainequipment and named this riometer network observation as South America Riometer Network (SARINET). Recently we also installed Electric Field detectors at several points. We called this network observation as South America Field of Electricity Network (SAFENET). IGRF:2000 NOAA data : >30keV electron

  2. Imaging Riometer (IRIS) Stations in South America 10º16΄S, 48º20 ΄ W University Luterano Brazil(ULBRA) 23º12΄S, 45º57΄ W University Vale do Paraiba(UNIVAP) 29º42΄S, 53º11΄ W Southern Space Observatory（SSO), INPE 36º50΄S, 73º01΄W Concepcion University, Chile 43º15΄S, 65º22΄W Geomagnetic Obs.(La Plata Univ.), Trelew, Argentina 53º07΄S, 70º53΄W Magalhanes Univ., Punta Arenas，Chile

  3. P Imaging Riometer Observation Galaxy radio wave(f=38.2MHz) Galaxy radio wave was absorbed by particle precipitation in ionosphere Ionosphere(70km-300km) Area： 200km Absorption image: 4 ｘ 4(16) antennas Cosmic Noise Absorption: CNA

  4. Imaging riometer data at Southern Space Observatory

  5. CNA event during Substorm 2001/03/27 GOES, A E, IRIS AE Dst Proton Electron Mag(Hp) GOES S N IRIS at SSO (Keogram) 001224

  6. 2011/09/2209/23 09/24 X-ray X-ray Proton Electron S N S N S N S N PAC（53ºS) TRW（43ºS) SMR（30ºS) SJC（23ºS) 00000024

  7. 2011/09/24 X-ray TRW (43ºS) S N S N NO CNA SJC (23ºS)

  8. South America 1ch and Imaging Riometer Network (SARINET) Manaus: Stop Natal: 2013 CASLEO: Stop Imaging Riometer (6 stations+Kakioka) 1ch riometer (13 stations)

  9. X-ray flare event 1ch Riometer data 2012 01 27 (00h-24h UT) PAL(10.2S) SJC(23.1S) CASLEO(31.5S) TRW(43.2S) PAC(53.1S) EACF(62.1S) KAK(36.2N) 00 06 12 18 00

  10. Installation of Field-Mill detector at 7 Stations in 2013 Palmas Field-Mill detector at SSO Atibai San Jose dos Campos Santa Maria Same Field Mill detectors are also installed atKakioka Geomagnetic Ob. and Kagoshima college in Japan Trelew Punta Arenas Brazilian Antarctic Station (planning)

  11. Calibration of Field-Mill detector for 6 stations (1) E=200V/m corresponding ~ 1V output (AMP Gain: No. 7) (2) Sensitivity :E=2V/m corresponding ~ 10mV output EACF Atibai ULBRA UNIVAP Trelew Kagoshima

  12. Electric-Field Observation in South America Syowa Station (Antarctica) Magnetic H comp. (69.0S, 39.3E) Southern Space Obs. Riometer(Blue ) Electric Field (Red) RIO/Electric-Field (29.6S, 54.0W) +1V -1V 001224 Magnetic field variation in Polar region has some relationships toElectric Field variation in Geomagnetic Anomaly region.(about 6 hours local time difference). Is this relation true or not ?. We want to study this relationships.

  13. Possibility of Electric Field detection at the ground (A) Particle precipitation influence in Geomagnetic Anomaly Region. Ionization of neutral atmosphere (less than 50km) and Electric Field will be produced between ionized region and ground. ionized atmosphere ＋　　＋　　＋　　＋　　＋　　＋　　＋　　＋ Electric-Field －　　－　　－　　－ Ground －　　－　－ (2) Accelerate Electric Field may be detectablein Geomagnetic Anomaly region as similar as aurora particle acceleration in the polar region. electron Electric Field ＋　＋　＋ (B) In the equatorial region, electric field of Plasma Bubble / Spread F phenomena Horizontal Component (Force of upward flow ) Detectablevertical Electric Field Total Electric Field

  14. Summary and Conclusion Geomagnetic Field in 2235 Variation of Dipole moment 1022Am2 Dipole moment Latitude Longitude Geomagnetic Field is sharply decreasing , especially in South Atlantic Ocean area. (2) What influence will be happened under the week geomagnetic field condition ?. (3) At present, the influence of environment due to decreasing of geomagnetic field is not so remarkable. However, it must be important to continue observation for the influence in South America region.

  15. Thank you for your attention

  16. 2011/09/609/7 09/8 X-ray Proton Electron evening evening nightside Dayside PAC（53ºS) S N S N S N S N ? TRW（43ºS) SMR（30ºS) ? SJC（23ºS) 00000024

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