ionosphere


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i·on·o·sphere

 (ī-ŏn′ə-sfîr′)
n.
A region of the earth's atmosphere where ionization caused by incoming solar radiation affects the transmission of radio waves. It extends from a height of 70 kilometers (43 miles) to 400 kilometers (250 miles) above the surface.

i·on′o·spher′ic (-sfîr′ĭk, -sfĕr′-) adj.

ionosphere

(aɪˈɒnəˌsfɪə)
n
(Astronomy) a region of the earth's atmosphere, extending from about 60 kilometres to 1000 km above the earth's surface, in which there is a high concentration of free electrons formed as a result of ionizing radiation entering the atmosphere from space. See also D region, E region, F region
ionospheric adj

i•on•o•sphere

(aɪˈɒn əˌsfɪər)

n.
the region of the earth's atmosphere between the stratosphere and the exosphere, consisting of several ionized layers and extending from about 50 to 250 mi. (80 to 400 km) above the surface of the earth.
i•on`o•spher′ic (-ˈsfɛr ɪk) adj.

i·on·o·sphere

(ī-ŏn′ə-sfîr′)
A region of the Earth's atmosphere in which atoms are often ionized (electrically charged) by radiation from the sun. The ionosphere lies mostly in the lower thermosphere, from about 43 to 250 miles (69 to 402.5 kilometers) above the Earth. Radio waves, which normally travel in a straight line, can be transmitted long distances over the curved surface of the Earth because they bounce off certain layers of the ionosphere and return to Earth instead of continuing into space.

ionosphere

That part of the atmosphere, extending from about 70 to 500 kilometers, in which ions and free electrons exist in sufficient quantities to reflect electromagnetic waves.

ionosphere

the outermost part of the earth’s permanent atmosphere, beyond the stratosphere, composed of heavily ionized molecules. It extends from about 50 to 250 miles above the surface of the earth. Cf. exosphere.
See also: Atmosphere

ionosphere

1. The upper layer of the atmosphere that lies above the stratosphere and is about 217 mi (350km) thick.
2. The area of the Earth’s atmosphere in which ionization caused by solar radiation affects the transmission of radio waves.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ionosphere - the outer region of the Earth's atmosphere; contains a high concentration of free electrons
atmosphere, air - the mass of air surrounding the Earth; "there was great heat as the comet entered the atmosphere"; "it was exposed to the air"
D region, D-layer - the lowest region of the ionosphere (35 to 50 miles up) that reflects low-frequency radio waves
Appleton layer, F layer, F region - the highest region of the ionosphere (from 90 to 600 miles up) which contains the highest concentration of free electrons and is most useful for long-range radio transmission
E layer, E region, Heaviside layer, Kennelly-Heaviside layer - a region of the ionosphere (from 50 to 90 miles up) that reflects radio waves of medium length
region, part - the extended spatial location of something; "the farming regions of France"; "religions in all parts of the world"; "regions of outer space"
Translations
ionosfääri

ionosphere

[aɪˈɒnəsfɪəʳ] Nionosfera f

ionosphere

nIonosphäre f

ionosphere

[aɪˈɒnəˌsfɪəʳ] nionosfera
References in periodicals archive ?
From a position aboard the International Space Station, it could gather observations of the ionosphere - the area of our atmosphere that overlaps with the lower regions of space.
"Geomagnetic storms create large disturbances in the ionosphere," NOAA said in a (https://www.swpc.noaa.gov/impacts/space-weather-and-gps-systems) statement .
COSMIC-2 will also monitor dynamic changes in Earth's ionosphere.
Its chief mission: The study of the universe and various celestial bodies, including meteorological observations as well as analysis of weather data and ionosphere, building satellites, Mars and its surroundings.
Making use of Global Ionosphere Maps (GIMs), which are maps at a global scale of the vertical total electron content (VTEC), Pundhir et al.
Professor Guo Lixin, dean of the school of physics and optoelectronic engineering at Xidian University in Xian and a leading scientist on ionosphere manipulation technology in China, said the joint experimentation was extremely unusual.
According to Cravens, the higher-than-expected rate of material being expelled from Saturn's D Ring into the planet's upper atmosphere, or ionosphere, is sufficient that astronomers now think the lifespan of the ring may be briefer than previously estimated.
During the day, the Sun's ultraviolet radiation breaks down neutral atoms in the upper atmosphere, creating the electrified soup of electrons and ions called the ionosphere. This broad layer reacts to changes in the intensity of sunlight, the encroaching solar wind above (space weather), and Earth below (terrestrial weather).
These signals allowed for gathering location information that was about one to two kilometers off because it did not account for changes in the ionosphere, which is a layer of the atmosphere that can reflect and modify radio waves, he noted.
The SpaceX Falcon 9 apparently tore a big hole in the Earth's ionosphere (the regions of the earth's atmosphere extending from earth's atmosphere extending from about 80 to 400 kilometers above the surface of the earth), which could cause errors in global positioning system (GPS) navigation.
Among his topics are electromagnetic properties of plasma and plasma modes, kinetic-derivation and analysis of the dielectric tensor, electromagnetic wave interaction with the ionosphere, nonlinear plasma waves, and ionospheric very-low-frequency transmitter.