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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 It plays an important role in atmospheric electricity and forms the inner edge of the magnetosphere
  • 10 Things to Know About the Ionosphere - Science@NASA
    Everything you need to know about the Ionosphere, the boundary between Earth's lower atmosphere — where we live and breathe — and the vacuum of space
  • Ionosphere | NOAA NWS Space Weather Prediction Center
    The Ionosphere is part of Earth’s upper atmosphere, between 80 and about 600 km where Extreme UltraViolet (EUV) and x-ray solar radiation ionizes the atoms and molecules thus creating a layer of electrons the ionosphere is important because it reflects and modifies radio waves used for communication and navigation Other phenomena such as energetic charged particles and cosmic rays also
  • The Ionosphere - Center for Science Education
    The Ionosphere Regions of the ionosphere, showing the D, E, and F layers UCAR Randy Russell Earth's atmosphere contains a series of regions that have a relatively large number of electrically charged atoms and molecules As a group, these regions are collectively called the ionosphere High-energy X-rays and ultraviolet (UV) "light" from the Sun are constantly colliding with gas molecules and
  • Ionosphere, Thermosphere Mesosphere - Science@NASA
    NASA’s heliophysics researches the ionosphere-thermosphere-mesosphere region where our neutral atmosphere transitions into the ionized plasma of space In this thin shell that surrounds our home planet, the atmosphere is in constant motion, shaped by the influence of both solar activity and changes in the lower atmosphere and in near-Earth space But this region is more than just a passive
  • What is the ionosphere? (And who is Steve?) - Live Science
    The ionosphere consists of three sections within the mesosphere and thermosphere, labeled the D, E and F layers, according to the UCAR Center for Science Education
  • Layers of the Atmosphere - National Oceanic and Atmospheric Administration
    The high temperature indicates the amount of the energy absorbed by the molecules, but with so few molecules in this layer, the total number would not be enough to heat our skin Take it to the MAX! The Ionosphere: The Outer Edges of the Atmosphere The bottom of the thermosphere is the mesopause - the transition into the mesosphere
  • Ionosphere and magnetosphere | Atmospheric Science, Solar Wind, Radio . . .
    Ionosphere and magnetosphere, regions of Earth’s atmosphere in which the number of electrically charged particles—ions and electrons—are large enough to affect the propagation of radio waves The charged particles are created by the action of extraterrestrial radiation (mainly from the Sun) on
  • Ionosphere – Definition Detailed Explanation – Space Weather Glossary
    The ionosphere is constantly changing and is influenced by a variety of factors, including solar activity, geomagnetic storms, and atmospheric conditions Changes in the ionosphere can have a significant impact on radio communications, GPS signals, and other technologies that rely on the ionosphere for transmission What role does the Ionosphere play in space weather? The ionosphere plays a
  • Earth–ionosphere waveguide - Wikipedia
    The Earth–ionosphere waveguide[1] is the phenomenon in which certain radio waves can propagate in the space between the ground and the boundary of the ionosphere Because the ionosphere contains charged particles, it can behave as a conductor The earth operates as a ground plane, and the resulting cavity behaves as a large waveguide Extremely low frequency (ELF) (< 3 kHz) and very low





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