Rickets

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Ratcheting is a specific form of surface erosion induced by precipitation (mostly heavy rain events ) . The dragging force of the water flowing off the surface creates elongated gullies and furrows, which are known as rickets. This form of erosion occurs predominantly on slopes with no vegetation in arid and semi-arid (e.g. Mediterranean areas) areas. The presence of near-surface layers of fine-grained soils (see DIN 18196 ) and fine sands favors the formation of thickets. In Italian , the term calanche is used for rickets.

literature

  • Dachroth WR, Handbook of Building Geology and Geotechnics, page 167, Springer, 2002