red sprites and blue jets
- red sprites and blue jets
-
flashes of light that occur above thunderstorms (
thunderstorm) and that are associated with normal
lightning in the thundercloud below.
The causes of both phenomena are not known. Red sprites tend to form almost instantaneously over a broad region between 40 and 90 km (about 25 to 55 miles) in altitude. This region spans most of the
mesosphere, the region of the atmosphere between about 50 and 80 km (30 and 50 miles) in altitude and which overlaps much of the ionospheric
D region (between 70 and 90 km, or approximately 40 and 55 miles in altitude). Red sprites have a reddish colour on low-light television records, and blue tendrils have been observed trailing beneath them. Blue jets propagate out of the tops of thunderclouds at surprisingly low velocities (roughly 100 km, or 60 miles, per second) in the form of narrow cones of light that are blue in colour. Both phenomena are the subject of active research.
* * *
Universalium.
2010.
Look at other dictionaries:
Upper-atmospheric lightning — is an obsolete term that is no longer used by researchers to refer to a family of electrical breakdown phenomena that occurs well above the altitudes of normal lightning. Current usage favors Transient Luminous Event (TLE) to refer to one of the… … Wikipedia
Lightning — This article is about the atmospheric electrical phenomenon. For other uses, see Lightning (disambiguation). See also: Lightning strike Lightning striking Atlanta, United States Lightning is an atmospheric electrostatic discharge (spar … Wikipedia
thunderstorm — /thun deuhr stawrm /, n. a transient storm of lightning and thunder, usually with rain and gusty winds, sometimes with hail or snow, produced by cumulonimbus clouds. Also called electrical storm. [1645 55; THUNDER + STORM] * * * Violent, short… … Universalium
Mesosphere — Earth atmosphere diagram showing the exosphere and other layers. The layers are to scale. From Earth s surface to the top of the stratosphere (50 km or 31 mi) is just under 1% of Earth s radius. This article is about the atmospheric… … Wikipedia
Marc Edwards (drummer) — Marc Edwards Background information Genres free jazz Instruments drums Mar … Wikipedia
Rainbow Brite — Infobox Television show name = Rainbow Brite caption = Rainbow Brite Title screen format = Animated television series camera = picture format = audio format = runtime = 25 minutes per episode creator = Jean Chalopin developer = Howard R. Cohen… … Wikipedia
Wikipedia:Reference desk/Miscellaneous — The Wikipedia Reference Desk covering the topic of miscellaneous. Miscellaneous #eee #f5f5f5 #eee #aaa #aaa #aaa #00f #36b #000 #00f miscellaneous Wikipedia … Wikipedia
Sprite (Wetterphänomen) — Roter Kobold (Red Sprite) Als Sprite (zu Deutsch „Kobold“ oder „Wicht“) bezeichnet man in der Meteorologie einen Blitz, der bei einem Gewitter oberhalb einer Wolke aus der Wolkendecke heraus bis in eine Höhe von über 100 Kilometern nach oben… … Deutsch Wikipedia
Creatures in the Half-Life series — The following is a list of creatures in the Half Life series. Half Life is a science fiction first person shooter computer game series which consists of two full games, two episodic games, and three third party made expansions, as well as a… … Wikipedia
List of creatures in the Half-Life series — The following is a list of creatures from the Half Life universe.Creatures from XenXen is where the majority of the aliens in Valve s Half Life series originate.VortigauntGargantuaThe Gargantua, nicknamed Garg , is mostly blue in color, has a… … Wikipedia
