TERMIUM Plus®

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LESSIVAGE RAPIDE [1 record]

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Alphabetical list of terms

Record 1 2002-02-26

English

Subject field(s)
  • Soil Science
  • Chemistry
OBS

... a normal "flushing event" can be defined as the response attributable to acidic inputs flushed by the equivalent of 1 to 2" rainfall or snow-melt into streams of 10 to 500 c.f.s. flow, following a period of accumulation of acidic deposition in snow or surface litter and foliage.

French

Domaine(s)
  • Science du sol
  • Chimie
OBS

L'équivalent anglais de "lessivage" est "leaching". Le phénomène qui se produit au printemps (spring acid shock) ou à l'occasion de pluies abondantes, et que les anglais appellent "flushing", est un lessivage dont la particularité est d'être particulièrement rapide; il fait augmenter soudainement le pH des cours d'eau et cause la mort des poissons.

OBS

On appelle lessivage, l'entraînement, vers les profondeurs du sol, sous l'action percolante de l'eau de pluie, des ions minéraux solubles et des fines particules d'argile.

Spanish

Campo(s) temático(s)
  • Ciencia del suelo
  • Química
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