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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 ( aɪˈɒnəˌsfɪər ) [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 radiation
  • 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 | 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
  • Ionosphere: Intro to Astronomy Study Guide | Fiveable
    The ionosphere is a layer of the Earth's upper atmosphere that is ionized by solar radiation It plays a crucial role in the propagation of radio waves and
  • Ionosphere – Definition Detailed Explanation - Sentinel Mission
    The ionosphere is a region of Earth’s upper atmosphere that is ionized by solar and cosmic radiation It is located between 30 and 600 kilometers above the Earth’s surface and is composed of a layer of charged particles known as ions
  • 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
  • Plasma - Ionosphere, Upper Atmosphere, Electrons | Britannica
    At altitudes below about 2,000 kilometres, the plasma is referred to as the ionosphere Thousands of rocket probes have helped chart the vertical structure of this region of the atmosphere, and numerous satellites have provided latitudinal and longitudinal information
  • (Ionosphere-Web) - Stanford University
    Various layers of the ionosphere and their predominant ion populations are listed at their respective heights above ground The density in the ionosphere varies considerably, as shown
  • What is the Ionosphere? (with pictures) - AllTheScience
    What is the Ionosphere? The ionosphere is a layer of the Earth's atmosphere that is ionized by solar wind Solar wind exists because the corona, which is the outermost layer of the sun's atmosphere, is extremely hot and wide
  • What is the ionosphere? (And who is Steve?) - Live Science
    A dense layer of molecules and electrically charged particles, called the ionosphere, hangs in the Earth's upper atmosphere starting at about 35 miles (60 kilometers) above the planet's surface





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