Auroral zone plasma waves detected at polar: PCBL waves

B. T. Tsurutani, J. K. Arballo, C. Galvan, L. D. Zhang, G. S. Lakhina, Tohru Hada, J. S. Pickett, D. A. Gurnett

    研究成果: Contribution to journalArticle査読


    Polar Cap Boundary Layer waves are ELF/VLF electric and magnetic waves detected on field lines adjacent to the polar cap, thus their name. Waves are present at this location 96% of the time. The wave latitude-local time distribution is shown to be the same as that of the auroral oval. The most intense waves are detected coincident with the strongest magnetic field gradients (field-aligned currents). Specific frequency bands of whistler mode-waves are identified: ~200 Hz, 1-2 kHz and ~5 kHz. Two types of intense electric waves are present: Solitary bipolar pulses (electron holes) and ~kHz electric turbulence. The PCBL waves are most likely a consequence of auroral zone field-aligned current instabilities. The currents have in turn been ascribed to be due to magnetospheric convection driven by the solar wind.

    ジャーナルAdvances in Space Research
    出版ステータス出版済み - 1 1 2001

    All Science Journal Classification (ASJC) codes

    • 航空宇宙工学
    • 天文学と天体物理学
    • 地球物理学
    • 大気科学
    • 宇宙惑星科学
    • 地球惑星科学(全般)


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