Observation of Precipitating Electrons on Board the S-310JA-2 (a. Precipitating Particles and Auroras) (Proceedings of the First Symposium on Coordinated Observations of the Ionosphere and the Magnetosphere in the Polar Regions (Part I))

• Main Authors: Haruya KUBO, Setsuo MURATA, Tomizo ITOH, Susumu KOKUBUN
• Format: Article in Journal/Newspaper
• Language: English; Japanese
• Published: National Institute of Polar Research 1979
• Subjects: Geography (General); G1-922; Antarctic; The Antarctic; Syowa Station; Antarc*
• Online Access: https://doi.org/10.15094/00008008; https://doaj.org/article/9316bbf550084662ab395745819ed5a8

A cylindrical electrostatic analyzer on board the Japanese Antarctic sounding rocket S-310JA-2 launched on February 10, 1977 at Syowa Station obtained the energy spectra of energetic electrons m the Antarctic polar ionosphere. The geomagnetic activity was high and there was a diffuse aurora at the time of launch. The measured electron flux was about l.8×10^3 electrons/cm^2・sec・str・eV at the energy of 4.2 keV and about 2.3×10^4 electrons/cm^2・sec・str・eV at 740 eV. The electrons whose energy was in the neighborhood of 500 eV had a considerable pitch angle dependence, and the field aligned current density due to these electrons resulted in about 1.47×10^<-6> A/m^2.