gully erosion

gully erosion

[′gəl·ē i¦rō·zhən]
(geology)
Erosion of soil by running water.
References in periodicals archive ?
But according to pilot studies carried out by Andrew Brooks, a senior research fellow at the Australian Rivers Institute at Griffith University, gully erosion may be an even bigger source.
Fine sediment from gully erosion is one of the biggest threats to reef water quality with sediment from the Burdekin region contributing disproportionately to sediment run-off into the Great Barrier Reef, Dr Miles said.
The extra run off water therefore, flows on the slopes and through the soil surface causing splash, rill and gully erosion, where the flowing water carries the soil load with itself causing floods.
Some of the most known soil erosion models are USLE (Universal Soil Loss Equation, 1965), EPIC (Erosion/Productivity Impact Calculator, 1984), EUROSEM (European Soil Erosion Model, 1993), RUSLE (Revised Universal Soil Loss Equation, 1997), Rill Grow (a model for rill initiation and development, 1998), SEMMED (Soil Erosion Model for Mediterranean Regions, 1999), EGEM (Ephemeral Gully Erosion Model, 1999), PESERA (Pan-European Soil Erosion Risk Assessment, 2003), and so forth.
Finally, it was found that the rate of Light erosion was great in upper stream and decrease toward the outlet, while the heavy erosion appear in downstream, suggesting presence of a clear correlation between the stream order and degree of water erosion, whereas the sheet erosion correlated with Initial orders, while Rill and Gully erosion correlated with major orders.
Other studies used an erosion index for rill and gully erosion to determine its severity on motorway slopes, such as that of Bochet and Garcia-Fayos (2004), in Valence, Spain.
The region between the towns of Sigulda and Ligatne was selected for study due to an abundant gully erosion network and presence of many landslide events.
Gully erosion is a significant land degradation process and a source of increased sediment load to rivers (Wasson et al.
Gully erosion is one of the types of water erosion that development of it can cause severe soil degradation.
They used techniques that can tell them whether the sediment originated as channel and gully erosion, or as shallow sheet or rill erosion further up hillslopes.
The land use types are mainly arable farming and livestock production threatened by soil erosion at varying extent of devastations, from sheet and rill erosion to the spectacular gully erosion known for colossal loss of soil and soil nutrients (Tekwa et al.