| Domain | Definition | ||
| Aerospace | A division of the ionosphere, usually found at an altitude between 100 and 120 kilometers in the E-region. It exhibits one or more distinct maximums and sharp gradients of free electron density. It is most pronounced in the daytime but does not entirely disappear at night. Also called E1 - layer, Kennelly-Heaviside layer, Heaviside layer. See sporadic E-layer (under ionosphere), atmospheric shell, ionosphere. There is some evidence to indicate a second layer above the normal E-layer located at about 150 kilometers, and called the E2-layer. (references) | ||
Source: compiled by the editor from various references; see credits. | Top | ||
Specialty Expressions: E-LAYER
| Expressions | Domain | Definition | |
| Sporadic E-layer | Electrical Engineering | An area of sporadic ionisation in the E region, of sufficient extent and continuity to form a temporary layer. Source: European Union. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
