rille

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Related to rills: RILS, No frills

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 ?
Lei TW, Zhang QW, Zhao J, Nearing MA (2006) Tracing sediment dynamics and sources in eroding rills with rate earth elements.
Thomas Hoblyn's 'Cornish memories' design consisted of three sinuous rills flowing into plunge pool with three modern containers to the side full of water.
There is little deposition in rills unless field slope substantially decreases.
The constant meander and change of position of these rills may obscure their presence from normal observation, hence establishing the false concept of sheet erosion.
Rills and hollows touch the sea, forming a wall to the left.
Flowing between these is the abstracted story of a river, which, fed by an invisible aqueduct, starts at a mythical source high on the hill and flows down through cascades, statues, spouts, squirts, balustrades, giochi d'acqua, pools, a long picnic table, fountains and rills to arrive at the sea of the great pond on the parterre terrace below the casini.
On average, the soils showed greater increases (12-fold) than the overburdens (4-fold), due to the initiation of rills at higher slopes on many of the soils.
Flowing water awakens the senses with its continual movement, whether from fountains which fill the air with sparkling drops and murmuring sound or from cascades of rushing water, slow-moving streams or narrow, fast-running rills.
Even your enfeebled I will tumble each over rills, or swaddling your corpses in my danties weep at the respite in such bright change.
Our growing knowledge of the lunar surface may have gradually transformed an unattainable, heavenly body into a forlorn satellite covered with volcanic craters, valleys, and rills, but the moon never quite lost its aura of mystery.
It may be well to first inquire whether the Germans themselves, who know and love their rocks and rills with an intensity long patent to all the world, admit any such esthetic deficit in their countryside.