Definition of "d-layer"

noun
the lowest region of the ionosphere (35 to 50 miles up) that reflects low-frequency radio waves


WikiPedia definition of "d-layer"

During this time Very Low Frequency (3 – 30 kHz) signals will become reflected by the D layer instead of the E layer, where the increased atmospheric density will usually ... >>

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 ... >>

In 1950, Bullen found his "D" layer to actually be two different layers. The upper part of the D layer, about 1800 km thick, was renamed D′ (D prime) and the lower part (the ... >>

The post-perovskite phase has implications for the D ′′-layer that influences the convective mixing in the mantle responsible for plate tectonics. >>

Adobe Atmosphere (informally abbreviated Atmo) was a software platform for interacting with 3D computer graphics. 3D models created with the commercial program could be explored ... >>

The mesosphere is also the region of the ionosphere known as the D layer. The D layer is only present during the day, when some ionization occurs with nitric oxide being ionized by ... >>

Guided between the earth and the D layer of the ionosphere. Surface waves. MF: Medium Frequency: 300–3000 kHz: 1000–100 m: Surface waves. E, F layer ionospheric refraction at night, when ... >>

Earth (or the Earth) is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four ... >>

During the day, a D layer forms and the E and F layers become much stronger. Often during the day the F layer will differenti; Uploaded with derivativeFX >>

The D″-layer appears to be compositionally distinct from the overlying mantle, and seismic tomography of subducted lithosphere suggests that the D″ layer may represent the ... >>

d-layer images

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