- sporadic E-region
- 散块 E 区
Atmospheric Sciences (English-Chinese) dictionary. 2014.
sporadic E-region
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Sporadic E propagation — Sporadic E or Es is an unusual form of radio propagation utilizing characteristics of the earth s ionosphere. Whereas most forms of sky wave propagation use the normal and cyclic ionization properties of the ionosphere s F region to refract (or… … Wikipedia
Sporadic — Occurring upon occasion or in a scattered, isolated or seemingly random way. A disorder that is sporadic is by definition neither an endemic, an epidemic, nor a pandemic: {{}}An endemic is present in a community at all times but in low frequency … Medical dictionary
sporadic — spo|rad|ic [ spə rædık ] adjective 1. ) not regular or frequent: The explosions were only sporadic now. sporadic showers 2. ) MEDICAL a sporadic disease appears in separate areas of a country or region with no clear connection between the cases ╾ … Usage of the words and phrases in modern English
sporadic — UK [spəˈrædɪk] / US adjective 1) not regular or frequent The explosions were only sporadic now. sporadic showers 2) medical a sporadic disease appears in separate areas of a country or region with no clear connection between the cases Derived… … English dictionary
sporadic E layer — noun Date: 1949 a layer of ionization occurring irregularly within the E region of the ionosphere … New Collegiate Dictionary
sporadic E — noun A meteorological phenomenon where radio waves above a certain frequency are reflected in the atmospheric E region, allowing these radio waves to be received in distances up to 1,200 miles … Wiktionary
sporadic e layer — noun Usage: usually capitalized E : a layer of ionization occurring irregularly within the E region of the ionosphere at heights of approximately 60 miles above the surface of the earth and occasionally being capable of reflecting radio waves of… … Useful english dictionary
Mines and Geosciences Bureau Region 13 (Philippines) — DENR Mines and Geosciences Bureau Region 13 Kawanihan ng Pagmimina at Agham Panlupa Bureau/Regional overview Headquarters DENR MGB Compound, Km. 2 National Highway, Surgao City Annual budget Personal Services P25.14 million (2011) Bureau/Regional … Wikipedia
E region — The region of the ionosphere in which the E layer tends to form. The region lies between 60 and 90 miles (100–150 km). The region reflects electromagnetic energy from 100 kHz to 30 MHz and plays an important role in long distance radio… … Aviation dictionary
E region — noun a region of the ionosphere (from 50 to 90 miles up) that reflects radio waves of medium length • Syn: ↑Heaviside layer, ↑Kennelly Heaviside layer, ↑E layer • Instance Hypernyms: ↑region, ↑part • Part Holonyms: ↑ … Useful english dictionary
E region — noun Date: 1930 the part of the ionosphere occurring between about 55 and 80 miles (90 and 130 kilometers) above the surface of the earth and containing the daytime E layer and the sporadic E layer … New Collegiate Dictionary
