frontal zone

frontal zone

[′frənt·əl ‚zōn]
(meteorology)
The three-dimensional zone or layer of large horizontal density gradient, bounded by frontal surfaces and surface front.

frontal zone

A front or zone with a marked increase of density gradient. It is not truly a surface of discontinuity but rather a zone of rapid transition of meteorological elements.
References in periodicals archive ?
it is a front marker) and to test for an overlap between the frontal zone (blue contours in Fig.
In the year 2013, 24 h electroencephalogram (EEG) showed occasional sharp slow waves in the frontal zone, in the backdrop of a generally normal EEG tracing [Figure 1]a.
He noted that the presence of five Ukrainian TV channels on the air in the frontal zone is a very high figure.
The Met Office said in a statement: "An active frontal zone is expected to advance steadily through Saturday, accompanied by strong, gusty winds and periods of heavy rain.
The chief forecaster said: "A mild and moist westerly flow, associated with a frontal zone and warm air mass is expected to persist through the weekend.
There is some uncertainty over how long the frontal zone will become slow moving across the region and therefore the expected amounts of rain.
While rain is more likely along southwest coasts, as this frontal zone meets colder air inland rain is likely to turn to sleet and snow, especially o higher ground, but occasionally to some lower lev too.
Near record 24-hour rain amounts came from storms generated in an unstable frontal zone lying across northern Illinois.
In the frontal zone of the delta, semidiurnal tides from the Rio de la Plata Estuary are typically about 1 m amplitude (Vieira & Lanfredi, 1996).
This observing system will allow us to visualize and analyze the evolution of a complex frontal zone in a completely new way," said Al Plueddemann, a WHO1 physical oceanographer who will serve as project scientist for the Pioneer Array.
In both the galleries shearing of the gallery frontal zone was registered indicating downslope slow movement along a slipping plane exposed clearly in the galleries as a step.