Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 14 of 14 for “"Gully erosion"”.
-
Analysis of gully erosion as a hydro-geomorphological hazard in Thulamela Municipality, Limpopo Province, South Africa
Gully erosion, a severe form of environmental process, poses significant global environmental and socio-economic challenges, worsened by deforestation, overgrazing and climate change. This study examines gully erosion as a hydro-geomorphological hazard in Thulamela Municipality, Limpopo Province, …
-
Understanding gully process in two Kansas landscapes
… removal and changes in rainwater infiltration. Gully erosion creates human safety hazards, soil loss, and sediment and nutrient pollution downstream. Across the globe, researchers have found a wide variety of gully growth rates and drivers (Poesen, Nachtergaele, Verstraeten, & Valentin, 2003), …
-
Geological, historical and present-day erosion and colluviation in Lesotho, southern Africa
… of 10 metres, cover the lowlands of Lesotho. Gully erosion whilst removing the colluvial storages, and resulting in the degradation of the landscape, provides an opportunity to examine colluvial profiles. A genesis for the colluvium is sought in an attempt to understand the conditions of …
-
Soil erosion and land degradation in the Swartland and Sandveld, Western Cape province, South Africa : a re-evaluation
… making this area vulnerable to varying erosion rates. Land use in the Swartland and Sandveld is mainly agricultural. Soil erosion is driven by the force of wind and or water. Sheet flow is what is considered as unconstrained water erosion together with rainsplash, while piping, rill and …
-
Pre-Historic Landslides on the Southeast Flank of the Uinta Mountains, Utah: Character and Causes of Slope Failure
… Most body and toe areas are deeply incised by gully erosion (up to 91 meters deep) and drainages are well developed with little ponding. Detailed mapping of the large landslides shows that the deposits are an accumulation of successive slope failures that have continually eroded the landscape …
-
Headcut retreat resulting from plunge pool erosion in a 3D landscape evolution model
… using existing concepts about this type of erosion. The model estimates retreat rates, given flow, height of the headcut, upstream slope and Manning's roughness, and the relevant soil parameters (erodibility and critical shear stress). The model was analyzed to study its behavior as its …
-
Effects of sedimentation on water-linked sectors in the Lusitu river catchment in southern Zambia.
… driving sedimentation of Lusitu River were gully erosion, loose soils (Leptosols), unstable riverbanks and weak sedimentary rock formations. There was large-scale siltation in the downstream section which measured 2,863,913.78m3 with mean sediment depth of 3.13m. Due to heavy sedimentation, …
-
Effects of sedimentation on water-linked sectors in the Lusitu river catchment in southern Zambia.
… driving sedimentation of Lusitu River were gully erosion, loose soils (Leptosols), unstable riverbanks and weak sedimentary rock formations. There was large-scale siltation in the downstream section which measured 2,863,913.78m3 with mean sediment depth of 3.13m. Due to heavy sedimentation, …
-
Factor influencing headcut migration within a cohesive Texas Black-Land gully.
Gully erosion degrades the Black-Land Prairies (BLP) (Texas), affecting agricultural productivity. It is initiated by rill and inter-rill erosive processes and exacerbated by storm frequency and duration. Few studies have assessed the factors influencing headcut development in cohesive gullies, …
-
Runoff, infiltration and soil erodibility studies in the Otutira catchment
… 500km² could be developed. Since about 1959 gully erosion has become more common and widespread. The causes of this erosion were not known, although many hypotheses attempting to account for erosion have been put forward. The research reported in this thesis was undertaken in an attempt to …
-
Areal Modeling of Erosion for Environmental Nonpoint Applications (AMEENA)
Erosion and sediment delivery from upland areas to waterbodies is a major problem impacting water quality in the United States and elsewhere. Measures to reduce these impacts are either targeted at reducing erosion on-site or at reducing delivery of sediment to waterbodies. AMEENA (Areal Modeling …
-
Soil erosion and conservation potential of row crop farming in mountainous landscapes of South Korea
… especially as a consequence of accelerated erosion by water during recent decades. In consideration of climate change and an increasing food demand of a rising population, there is an urgent need to conserve the soil resources by implementing effective erosion control measures for …
-
Integrating earth observation in hydrological modeling: A data and computing-intensive approach
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-08-01
-
Macro to Micro Legacies of Landuse at the Calhoun Critical Zone Observatory
… of how it drives the landscape processes of soil erosion, bedrock weathering, and landcover. In this work, interfluve (hilltop) networks were ordered according to Hortonian methodology at the CCZO in South Carolina with corresponding “hillshed” areas delineated and bounded at the base by valleys …