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... > solar system > planet > terrestrial planet > Earth > Earth atmosphere > upper atmosphere > ionosphere > total electron content
... > solar system > atmospheric sciences > Earth atmosphere > upper atmosphere > ionosphere > total electron content

Terme préférentiel

total electron content  

Définition

  • Total electron content (TEC) is an important descriptive quantity for the ionosphere of the Earth. TEC is the total number of electrons integrated between two points, along a tube of one meter squared cross section, i.e., the electron columnar number density. It is often reported in multiples of the so-called TEC unit, defined as TECU = 10¹⁶ el/m²≈ 1.66 x 10⁻⁸ mol.m⁻². TEC is significant in determining the scintillation and group and phase delays of a radio wave through a medium. Ionospheric TEC is characterized by observing carrier phase delays of received radio signals transmitted from satellites located above the ionosphere, often using Global Positioning System satellites. TEC is strongly affected by solar activity. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Total_electron_content)

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http://data.loterre.fr/ark:/67375/MDL-DQ15X2RM-4

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