transition layer


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Transition Layer

 

a layer of water in which the vertical gradients of oceanographic parameters, including temperature, salinity, and density, increase sharply compared to the vertical gradients in the layers above and below. Transition layers are formed where there is intensive mixing of the surface layer caused by wind or convection or where two masses of water of different origin are superimposed on one another. Sharp temperature transitions (thermoclines) usually occur where the surface layer is strongly heated and mixed by the wind. Transition layers of salinity and density form where fresh waters from continental runoff or melting ice spread over the surface of the ocean. Submarines may use such layers as a “liquid floor.” The thicknesses of transition layers range from several meters to several tens of meters; the magnitude of the vertical gradient in such layers may exceed 8°-10°C per m for temperature, 5 parts per thousand per m for salinity, and 0.05–0.07 kg per m3 per m for density. Transition layers are typical of the upper layers of the sea. In some cases, several transition layers may be arranged vertically.

A. M. MUROMTSEV

transition layer

The airspace between the transition altitude and the transition level (ICAO). See transition altitude.
References in periodicals archive ?
Nevolin, "Magnetic and magnetooptical properties of the transition layer in epitaxial bismuth-gallium iron garnet structures," Soviet Physics: Technical Physics, vol.
If the waveguide is multi-modal, i.e., its spatial spectrum is rich, interactions of overlapping fields in the waveguide and the WM in the transition layer should be more efficient and the power transfer in the slab should increase once more.
Abundant slip bands can be seen in the Ti skeleton as shown in the inset of Figure 3(a).The transition layer of [beta]-Ti solution is good for the progressive deformation because it is harder than the pure Ti and softer than BMG.
Key words: active layer, Alaska, arctic soils, frozen ground, permafrost, transition layer
The absence of chromium in the transition layer confirms the presence of a sharp boundary between the facing and the backing.
The transition layer of OHAp to the aqueous phase has been considered to be equivalent to approximately half a unit cell of OCP on the surface of the {00} faces of OHAp.
The result is a wider transition layer under these cedars, a thicker mulch.
After the separation from Danaklon, Corovin continued with the conception of its own material and successfully introduced a highloft transition layer to the market.
The remaining 25% of overlay is the transition layer. An optimal carbide composition ensures homogenous bonding between the base metal and overlay, adding to its high wear resistance and long service life.
However, some questions still remain to limit the prediction accuracy: (1) an exact equivalent particle radius is needed for a good prediction, which is usually hard to get for aerosolized nanoparticles; (2) the molecular motion inside the inner layer is considered to be collisionless and there is no transition layer between the two layers in Figure 1 [24].
However, whether one is plating or sputtering the hard metal layer to the ferromagnetic leads, a transition layer is needed to insure that all the metals metallurgically bond to each other.
"The extended transition layer of near-zero outflow contradicts theories that predict a sharp transition to the interstellar flow at the heliopause-and means, once again, we will need to rework our models," Krimigis stated.

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