rille


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rille

(rĭl): see moonmoon,
natural satellite of a planet (see satellite, natural) or dwarf planet, in particular, the single natural satellite of the earth. The Earth-Moon System

The moon is the earth's nearest neighbor in space.
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.

rille

(ril) (rima) Either of two distinct types of elongated lunar depression (see table). Sinuous rilles are confined to the maria, where they follow local contours, are frequently discontinuous (or consist of rows of coalescing craters), and have V-shaped cross sections. They sometimes originate in volcanic caldera and are assumed to be channels, or collapsed tubes, carved out by molten basaltic lavas. Examples exist of sinuous rilles inside sinuous rilles but tributary systems are not observed.

Faulted linear, arcuate, and forked rilles have flat floors and do not recognize highland-mare boundaries. This second type of rille is frequently associated with impact basins and craters, where they may be concentric. See also crater chain; fault; wrinkle ridges.

rille

[ril]
(astronomy)
References in periodicals archive ?
Easiest is the western end of Schroters Valley, the widest lunar rille.
The volume eruption rates deduced from the longer sinuous rille channel lengths are very similar to those found for the longest conventional lava flow units; modeling studies show that the turbulence leading to efficient thermal erosion was probably encouraged by a combination of unusually steep slope and unusually low lava viscosity.
Labels mark locations discussed in the text: A, Aristarchus region; DV, Doppelmayer-Vitello region; A 75 and A17, landing sites of Apollo 15 and 17, respectively; and SG, rilles near Sulpicius Gallus crater.
1 aus der technischen Lieferbedingung Rille gilt auch fr Vignols
Hermann Klein's 'discovery' in 1878 of what he took to be a new crater near the Hyginus rille also continued to engage the interest of telescopic observers.
Fenerbahce E[pounds sterling]lker contributes power forward ylkan Karaman, shooting guard Onan Eumer and small forward Emir Rille Predzic, a Bosnian-born player whose colorful career spans the Slovenian, Bosnian and Turkish national teams.
He recently finished a far-future novel, Empire Ship, and his first novel, Transcendence, will appear in 2010 from Hadley Rille Books.
Fenerbahce E[pounds sterling]lker contributes power forward ylkan Karaman, shooting guard Onan Eumer, center SavaE- Oy-uz and small forward Emir Rille Predzic, a Bosnian-born player who has had a colorful career that spans the Slovenian, Bosnian and Turkish national teams.
On Earth, recent examples can be seen on the flanks of Kilauea volcano in Hawaii, while on the Moon, Hadley Rille, visited by Apollo 15 in 1971, is believed to have formed in the same way billions of years ago.
Clarke, coedited with Gregory Benford from Hadley Rille Books.
The British Stenographic Journal of February 21, 1879, reported that Hermann Klein, an experienced German observer, had discovered a deep and conspicuous new crater near the Hyginus Rille (known today as Rima Hyginus).