gully erosion

gully erosion

[′gəl·ē i¦rō·zhən]
(geology)
Erosion of soil by running water.
References in periodicals archive ?
Due to the impact of flooding and gully erosion in the area, one of the two major bridges connecting roads in the estate has collapsed making the roads impassable for vehicles.
Some EQIP activities include installing structures to address gully erosion, improving pastureland diversity using interseeding techniques, and improving soil health by increasing organic matter with cover crops.
Caption: Sugar Creek gully erosion: late 1940s and early 50s.
RUSLE models rill and sheet erosion, but does not include channelized gully erosion. Erosion from cattle trails has been shown to be significantly higher than the surrounding grazed landscape (George et al.
Gully erosion is best controlled by planting trees on higher ground around the gully area, CEC said.
LandSat images showed that these gullies were not there in 1988, an observation also confirmed by the local community using participatory geographical information system (PGIS).From the PGIS studies, the main drivers of gully erosion were identified as an increase in bare land and agricultural land, and a reduction in grassland, meaning the hand of man is at work in Suswa, so and we should not blame the tremor!According to the study, Olesharo has lost 313,750 tonnes of sediment due to gully erosion within a span of 20 years.
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.
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.