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The Soil Conservation Society of America defines a gully as “a channel or miniature valley cut by concentrated runoff but through which water commonly flows only during and immediately after heavy rains. It may be dendritic or branching or it may be linear, rather long, narrow and of uniform width”.
Gully Erosion. Gully erosion occurs due to the runoff of surface water, causing the removal of soil with drainage lines. Gullies when started once, will move by headward erosion or even by slumping of side walls unless and un-till proper steps will be taken in order to stabilize the disturbance. Stream Bank Erosion.
Gully erosion is localized in the Coastal Plain Sands, Nanka Sands, and Nsukka Sandstone of the Anambra-Imo basin region. The most affected deposits are unconsolidated or poorly consolidated and have short dispersion times.
Oct 31, 2005 · Gully erosion is not a process limited to badlands, mountainous and hilly regions but a global and serious cause of land degradation affecting a wide variety of soils prone to crusting and/or piping. (2) Gully erosion results not only from surface flow but also often from sub-surface flow. (3)
Gully, trench cut into land by the erosion of an accelerated stream of water. Various conditions make such erosion possible: the natural vegetation securing the soil may have been destroyed by human action, by fire, or by a climatic change; or an exceptional storm may send in torrents of water down.
Jul 1, 2021 · Measuring, modelling and managing gully erosion at large scales: A state of the art. Author links open overlay panel. Matthias Vanmaercke a b. , Panos Panagos c. , Tom Vanwalleghem d. , Antonio Hayas e. , Saskia Foerster f. , Pasquale Borrelli g h. , Mauro Rossi. , Dino Torri. , Javier Casali. , Lorenzo Borselli k. , Olga Vigiak c. ,
Gully erosion (Fig. 6) occurs where concentrated surface water scour out the regolith and underlying rock with the debris being either deposited downslope or transported into river systems creating major downstream problems. The gully form and severity is very dependent on the rock type.
Sep 30, 2021 · This chapter presents the classification and geomorphic features of gullies, spatial variability of soil shear strength within the gullies, major erosion processes and controlling factors of gully development, gully erosion susceptibility, and sediment production by...
Nov 9, 2020 · Gully erosion is a major environmental problem, posing significant threats to sustainable development. However, insights on techniques to prevent and control gullying are scattered and incomplete, especially regarding failure rates and effectiveness.
Dec 27, 2019 · Gully erosion is the removal of soil along drainage lines by surface water runoff. When rills increase in size, they become gullies. Once started, gullies will continue to move by headward erosion or by slumping of the side walls.
