- Geol. erosion by sheets of running water, rather than by streams. Also called sheet-flood erosion /sheet"flud'/.[1915-20]
* * *Detachment of soil particles by raindrop impact and their removal downslope by water flowing overland as a sheet instead of in definite channels or rills.A more or less uniform layer of fine particles is removed from the entire surface of an area, sometimes resulting in an extensive loss of rich topsoil. Sheet erosion commonly occurs on recently plowed fields or on other sites having poorly consolidated soil material with scant vegetative cover.
* * *▪ geologydetachment of soil particles by raindrop impact and their removal downslope by water flowing overland as a sheet instead of in definite channels or rills. A more or less uniform layer of fine particles is removed from the entire surface of an area, sometimes resulting in an extensive loss of rich topsoil. Sheet erosion commonly occurs on recently plowed fields or on other sites having poorly consolidated soil material with scant vegetative cover.There are two stages of sheet erosion. The first is rain splash, in which soil particles are knocked into the air by raindrop impact. A hundred tons of particles per acre may be dislodged during a single rainstorm. In the second stage, the loose particles are moved downslope, commonly by sheetflooding. Broad sheets of rapidly flowing water filled with sediment present a potentially high erosive force. Generally produced by cloudbursts, sheetfloods are of brief duration, and they commonly move only short distances. On relatively rough surfaces, sheetflooding may give way to rill wash, in which the water moves in a system of enmeshed microchannels, which eventually become larger and develop into gullies.
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Look at other dictionaries:
Sheet-Erosion — [ʃiːtɪ rəʊʒn, englisch], Bodenerosion … Universal-Lexikon
sheet erosion — noun : erosion that removes surface material more or less evenly from an extensive area as contrasted with erosion along well defined drainage lines that produces or enlarges gullies or ravines * * * Geol. erosion by sheets of running water,… … Useful english dictionary
sheet erosion — Erosion occurring over widespread tabular sedimentary or effusive rock  … Lexicon of Cave and Karst Terminology
sheet erosion — noun Relatively even erosion of a layer of soil without channel formation; generally takes place on sloping land. Syn: sheet wash … Wiktionary
sheet-erosion — adjective noun … Wiktionary
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