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 ?
This is not only due to the proximity of these settlements to the frontal zone but also to the general difficult socio-economic situation in Armenia.
5) an algorithm to either draw a line to represent a front or identify a region representing the frontal zone along the field at a given tolerance, and also possibly classifying the front as a warm or cold front.
Kodama, "Large-scale common features of subtropical precipitation zones (the Baiu frontal zone, the SPCZ, and the SACZ).
CTP was instrumental in detecting areas of potential derangement of cerebral autoregulation and vasospasm, which are out of the usual frontal zone of insertion of the monitoring bundle.
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.
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.
"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."
mordax) and shallow-demersal species (Citharichthys fragilis and Sebastes sp.) were distributed at the frontal zone near Angel de la Guarda and San Lorenzo Islands, while species of deep habitats such as mesopelagic (Triphoturus mexicanus and Diogenichtys laternatus), deep-demersal tropical (Argentina sialis), and bathypelagic temperate species (Leuroglossus stilbius), as well as oceanic-pelagic (Trachurus symmetricus), were registered south, out of the frontal area (Figure 6(c)).
Near record 24-hour rain amounts came from storms generated in an unstable frontal zone lying across northern Illinois.