equatorial trough

equatorial trough

[‚e·kwə′tȯr·ē·əl ′trȯf]
(meteorology)
The quasicontinuous belt of low pressure lying between the subtropical high-pressure belts of the Northern and Southern hemispheres. Also known as meteorological equator.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
He states that there is "considerable vagueness in exactly defining this front, some writers making it synonymous with the doldrums, others locating it at the equatorial margins of the trades." Riehl (1979), in his classical book on tropical meteorology, focused attention on the pressure field (i.e., the equatorial trough).
1828 Equatorial Trough (Doldrums) explained (von Humboldt)
Vesta also bears multiple scars from two giant impacts, including mammoth basins in its south pole and equatorial troughs that formed as the rocky crust reverberated from the impact.