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  2. F region - Wikipedia

    en.wikipedia.org/wiki/F_region

    The density falls off to below 10 4 e/cm 3 at night. The F 1 layer merges into the F 2 layer at night. Though fairly regular in its characteristics, it is not observable everywhere or on all days. The principal reflecting layer during the summer for paths of 2,000 to 3,500 km (1200 to 2200 miles) is the F 1 layer. However, this depends upon the ...

  3. Ionosphere - Wikipedia

    en.wikipedia.org/wiki/Ionosphere

    Relationship of the atmosphere and ionosphere. The ionosphere (/ aɪ ˈ ɒ n ə ˌ s f ɪər /) [1] [2] is the ionized part of the upper atmosphere of Earth, from about 48 km (30 mi) to 965 km (600 mi) above sea level, [3] a region that includes the thermosphere and parts of the mesosphere and exosphere. The ionosphere is ionized by solar ...

  4. Skip distance - Wikipedia

    en.wikipedia.org/wiki/Skip_distance

    A skip distance is a distance on the Earth's surface between the two points where radio waves from a transmitter, refracted downwards by different layers of the ionosphere, fall. It also represents how far a radio wave has travelled per hop on the Earth's surface, for radio waves such as the short wave (SW) radio signals that employ continuous ...

  5. File:Ionosphere Layers en.svg - Wikipedia

    en.wikipedia.org/wiki/File:Ionosphere_Layers_en.svg

    2008-10-11T12:52:41Z Sebman81 400x300 (12915 Bytes) {{Information |Description={{en|1=Ionospheric layers. At night the E layer and F layer are present. During the day, a D layer forms and the E and F layers become much stronger. Often during the day the F layer will differenti; Uploaded with derivativeFX

  6. Birkeland current - Wikipedia

    en.wikipedia.org/wiki/Birkeland_current

    Schematic of the Birkeland or Field-Aligned Currents and the ionospheric current systems they connect to, Pedersen and Hall currents. [1]A Birkeland current (also known as field-aligned current, FAC) is a set of electrical currents that flow along geomagnetic field lines connecting the Earth's magnetosphere to the Earth's high latitude ionosphere.

  7. File:Stratification in the lower ionosphere (IA ...

    en.wikipedia.org/wiki/File:Stratification_in_the...

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  9. Ionospheric storm - Wikipedia

    en.wikipedia.org/wiki/Ionospheric_storm

    The F-region is the highest region of the ionosphere. Consisting of the F1 and F2 layers, its distance above the Earth's surface is approximately 200–500 km. [7] The duration of these storms are around a day and reoccur every approximately 27.3 days. [6] Most ionospheric abnormalities occur in the F2 and E layers of the ionosphere.

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