Aspects of layer electrodynamics inferred from high-resolution ISR observations of the 80-270 km ionosphere

John D. Mathews, Michael P. Sulzer, Phil Perillat

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    30 Scopus citations

    Abstract

    The Arecibo 430 MHz Incoherent Scatter Radar (ISR) has been used to observe vertical ionospheric electron concentration profiles in the 80-280 km altitude region at the highest sustained resolutions (150 m, 10 s) thus far reported for "ion-line" measurements. We present results that reveal layers and wave-like features in unprecedented detail and likely point to electrodynamic processes linking the E and F regions. Tidal Ion Layers (TILs) and sporadic E (Es) layers in the 100-110 km altitude region often display significant peaks and edges that appear in only one range gate (150 m). Also, previously unreported wave-like plasma structures - termed "ion rain" - with ∼12 minutes apparent period, normalized amplitudes of 1-3%, and vertical wave-lengths in excess of 30 km have been observed extending from base of the F-layer to the evening intermediate TIL with indications of coupling into the 90-110 km region below.

    Original languageEnglish (US)
    Article number97GL01320
    Pages (from-to)1411-1414
    Number of pages4
    JournalGeophysical Research Letters
    Volume24
    Issue number11
    DOIs
    StatePublished - Jan 1 1997

    All Science Journal Classification (ASJC) codes

    • Geophysics
    • Earth and Planetary Sciences(all)

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