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ionosphere    音标拼音: [ɑɪj'ɑnəsfir] [ɑɪ'ɑnəsfir]
n. 电离层

电离层

ionosphere
n 1: the outer region of the Earth's atmosphere; contains a high
concentration of free electrons

ionosphere \ionosphere\ n.
the outer region of the earth's atmosphere, beyond which is
the {exosphere}; it contains a high concentration of free
electrons and ions, and extends from about 50 miles to about
250 miles above the earth's surface, but the height shows
daily and seasonal variation, and the composition of the
particles in the ionosphere is also affected by events such
as solar flares.
[WordNet 1.5 PJC]


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  • Ionosphere - Wikipedia
    The ionosphere is the ionized region of the atmosphere, important for radio propagation, and the magnetosphere is where the geomagnetic field controls particle motion
  • 10 Things to Know About the Ionosphere - Science@NASA
    The ionosphere stretches roughly 50 to 400 miles above Earth's surface, right at the edge of space Along with the neutral upper atmosphere, the ionosphere forms the boundary between Earth's lower atmosphere — where we live and breathe — and the vacuum of space
  • The Ionosphere - Center for Science Education
    Regions with higher concentrations of ions and free electrons occur at several different altitudes and are known, as a group, as the ionosphere There are three main regions of the ionosphere, called the D layer, the E layer, and the F layer
  • What is the ionosphere? (And who is Steve?) - Live Science
    Earth's ionosphere, a region of charged particles, stretches up to the border between Earth and space
  • Ionosphere | NASA Space Place – NASA Science for Kids
    What is the ionosphere? The ionosphere is a very active part of the atmosphere, and it grows and shrinks depending on the energy it absorbs from the Sun The name ionosphere comes from the fact that gases in these layers are excited by solar radiation to form ions, which have an electrical charge
  • Ionosphere and magnetosphere | Atmospheric Science, Solar Wind, Radio . . .
    The name “ionosphere” was introduced first in the 1920s and was formally defined in 1950 by a committee of the Institute of Radio Engineers as “the part of the earth’s upper atmosphere where ions and electrons are present in quantities sufficient to affect the propagation of radio waves ”
  • Ionosphere - Simple English Wikipedia, the free encyclopedia
    The ionosphere ( aɪˈɒnəˌsfɪər ) [1][2] is the ionized part of the upper atmosphere of Earth Closest to the surface of Earth, the ionosphere is about 48 km (30 mi) away
  • IMPC Website: impc. dlr. de
    The ionosphere is the ionised part of the Earth's atmosphere Most of the atmospheric gas molecules in the ionosphere are ionised by the ultraviolet radiation coming from the Sun Additionally, charged particles from the magnetosphere reach the atmosphere and contribute to the ionosphere
  • Ionosphere | atmospheric region | Britannica
    The ionosphere is a region of Earth's upper atmosphere, extending from about 80 to 300 kilometers (50 to 185 miles) in altitude It is characterized by the presence of ions and electrons, created when solar ultraviolet radiation removes electrons from atmospheric gases
  • Ionosphere | NOAA NWS Space Weather Prediction Center
    Due to spectral variability of the solar radiation and the density of various constituents in the atmosphere, there are layers are created within the ionosphere, called the D, E, and F-layers





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