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ionosphere    音標拼音: [ɑɪj'ɑnəsfir] [ɑɪ'ɑnəsfir]
n. 電離層

電離層

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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英文字典中文字典相關資料:
  • 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 | 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
  • 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?) | Space
    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
  • 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 – 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
  • Tracking Solar Flares
    The ionosphere is defined as the layer of the Earth's atmosphere that is ionized by solar and cosmic radiation It lies 75-1000 km (46-621 miles) above the Earth
  • About HAARP | HAARP
    About HAARP The High-frequency Active Auroral Research Program, or HAARP, is a scientific endeavor aimed at studying the properties and behavior of the ionosphere "The ionosphere stretches roughly 50 to 400 miles above Earth's surface, right at the edge of space
  • Ionosphere - ScienceDaily
    The ionosphere is the part of the atmosphere that is ionized by solar radiation It plays an important part in atmospheric electricity and forms the inner edge of the magnetosphere





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