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 ?
The outermost layer of the planet's atmosphere is called the ionosphere and it helps protect the Earth and everything on it from the energy coming from the sun, including the radiation.
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.
The funding will also support experiments to look at the science of the ionosphere; Dstl is collaborating with the US on CIRCE (Coordinated Ionospheric Research Cubesat Experiment), which is a small satellite mission due to launch in 2019, which will improve our understanding of how satellite communications are impacted by disturbances in the ionosphere during periods of heightened solar activity.
The eclipse will provide an opportunity for researchers to investigate how the ionosphere reacts to cosmic disturbances.
NASA has scheduled to launch a research rocket, also known as a sounding rocket, into the sky on June 13 and create colored clouds to help with studying the Earth's ionosphere and the aurora atmospheric phenomenon.
MAVEN has made the first direct detection of the permanent presence of metal ions in the ionosphere of a planet other than Earth," said Joseph Grebowsky of NASA's Goddard Space Flight Center in Greenbelt, Maryland.
The dataset of the electron density has been generated using the international reference ionosphere model (IRI model).
The ionosphere is the conductive atmospheric layer formed by the ionization of the neutral atmosphere.
Several spacecraft have detected two ionosphere layers on the Red Planet.
Ionosphere is a layer over Earth which is very important for human life which absorbs and ionizes Sun rays and cosmic rays.
Vertically propagating internal gravity waves modified by acoustic effects provide a fast mechanism for information transfer across the atmosphere, from sea level all the way up to the ionosphere at 100-km altitude, thus raising the possibility of tsunami detection by remote sensing of wave-induced modulations in the ionosphere.
But it is said there is a link between activities occurring on the earth and ionosphere," said Dr Mylswami Annadurai, director of Indian Space Research Organisation (Isro) satellite centre in Bengaluru in India, who was in Abu Dhabi to address the fifth Global Space and Satellite Forum.