ionospheric+region

См. также в других словарях:

• ionospheric region — jonosferos sritis statusas T sritis radioelektronika atitikmenys: angl. ionospheric region vok. Ionosphärenbereich, m rus. ионосферная область, f pranc. région ionosphérique, f …   Radioelektronikos terminų žodynas

• région ionosphérique — jonosferos sritis statusas T sritis radioelektronika atitikmenys: angl. ionospheric region vok. Ionosphärenbereich, m rus. ионосферная область, f pranc. région ionosphérique, f …   Radioelektronikos terminų žodynas

• D region — the lowest region of the ionosphere, in which the D layer develops. [1925 30] * * * ▪ atmospheric science       lowest ionospheric region, at altitudes of about 70 to 90 km (40 to 55 miles). The D region differs from the other ionospheric regions …   Universalium

• F region — the ionospheric region in which the F layer forms. [1925 30] * * * ▪ atmospheric science       highest region of the ionosphere, at altitudes greater than 160 km (100 miles); it has the greatest concentration of free electrons and is the most… …   Universalium

• E region — the region of the ionosphere in which the E layer forms. [1935 40] * * * ▪ atmospheric science also called  Kennelly heaviside Layer,         ionospheric region that extends from an altitude of 90 kilometres (60 miles) to about 160 kilometres… …   Universalium

• F region — noun 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 • Syn: ↑Appleton layer, ↑F layer • Instance Hypernyms: ↑region,… …   Useful english dictionary

• F region — /ˈɛf ridʒən/ (say ef reejuhn) noun the ionospheric region in which the F layer forms …  

• Sudden Ionospheric Disturbance — A sudden ionospheric disturbance (SID) is an abnormally high ionization/plasma density in the D region of the ionosphere caused by a solar flare. The SID results in a sudden increase in radio wave absorption that is most severe in the upper… …   Wikipedia

• F region — The F region of the ionosphere is home to the F layer of ionization, also called the Appleton layer , after the English physicist Edward Appleton. As with other ionospheric sectors, layer implies a concentration of plasma, while region is the… …   Wikipedia

• D region — The D region is the portion of the ionosphere that exists approximately 50 to 95 km above the surface of the Earth. Note: Attenuation of radio waves, caused by ionospheric free electron density generated by solar radiation, is pronounced… …   Wikipedia

• ionosphere and magnetosphere — ▪ atmospheric science Introduction       regions of Earth s (Earth) atmosphere in which the number of electrically charged particles ions (ion) and electrons (electron) are large enough to affect the propagation of radio waves (electromagnetic… …   Universalium