E region

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Term: E region

A daytime region of the Earth’s ionosphere roughly between the altitudes of 90 and 160 km. E region characteristics (electron density, height, etc.) depend on the solar zenith angle and solar activity. The ionization in the E layer is caused mainly by x-rays in the range 0.8 to 10.4 nm. (See also sporadic E.)

Created 2023.04.16
Last Modified 2023.04.16
Contributed by Ryan McGranaghan