thickness line

thickness line

[′thik·nəs ‚līn]
(meteorology)
A line drawn through all geographic points at which the thickness of a given atmospheric layer is the same. Also known as relative contour; relative isohypse.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
A longtime rule of thumb of forecasters is that the 540 decameter thickness line marks the zone dividing rain to the south and snow and winter weather to the north.
The most significant difference is the position of the zero thickness line (the erosional limit) of the group.
The first stop for all these fishermen, and women too sometimes, is those little stalls set up by the shore which sell different length and thickness lines coiled around pieces of cardboard, various size hooks, sinkers for weight and bait such as shrimp, worms and leeches.