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 20 of 50 for “"gully"”.
-
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), …
-
Investigating sustainable solutions for roadside gully pot management
Roadside gully pots are an important component of urban drainage, with over 17 million examples in service throughout England and Wales. Their main purpose is to retain sediments from road runoff, leaves and organic litter in order to avoid blockage or hydraulic restriction of the drainage system. …
-
Control by Vegetation Disturbance on Gully Rejuvenation Following Wildfire
Gully rejuvenation (GR) following wildfire influences landform evolution and generates flooding and debris that alters aquatic habitat and threatens human activities. Fire severity, defined as the degree of vegetation loss by wildfire, is a hypothesized control on this erosion response. I …
-
Control by Vegetation Disturbance on Gully Rejuvenation Following Wildfire
Gully rejuvenation (GR) following wildfire influences landform evolution and generates flooding and debris that alters aquatic habitat and threatens human activities. Fire severity, defined as the degree of vegetation loss by wildfire, is a hypothesized control on this erosion response. I …
-
"too notorious to be denied": The Murdering Gully Massacre(s)
… words. Indeed, in the instance of the Murdering Gully massacre, disregarding what the victims told about the incident has resulted in the truth of what happened essentially remaining hidden in plain sight for almost two hundred years. As Australia heads into an age of "truth-telling" about our …
-
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, …
-
The geomorphological behaviour of a snow-fed, semi-arid gully system in western Colorado
… affects different parts of the landscape. A gully system lying within a small (0.4 km squared) sub-catchment of the Alkali Creek basin was surveyed in 1962, 1975, and 1980. Because the watershed materials are erodible and sensitive to all watershed runoff events, it is hypothesised that the …
-
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, …
-
A 210,000-year reconstruction of subtropical climates from Fern Gully Lagoon, North Stradbroke Island (Minjerribah), Australia
… multi-proxy climate record from Fern Gully Lagoon, North Stradbroke Island (Minjerribah), through the following components: • A review and synthesis of hydroclimate data from 40 Australian marine isotope stage 3 (MIS 3; 57 – 29 ka) records, allowing a continental record of moisture …
-
Assessing the impacts of riparian land use on gully development and sediment load : a case study of Nzhelele River Valley, Limpopo Province, South Africa
… the contribution of different land uses to gully development and sediment load on the Nzhelele River Valley in the Limpopo Province. Data was collected using different methods such as observation, field data techniques and experiments. Satellite digital images, topographic maps, aerial …
-
Sediment in forested and logged gullies, coastal British Columbia
… the storage and transfer of sediment in the gully channel, and logging can affect the supply and type of CWD. To determine whether logging affects storage and transfer of sediment in gullies, sediment budgets were constructed for gullies in four treatment classes: A. Logged, slash full, no …
-
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 …
-
Modelling the Holocene evolution of coastal gullies on the Isle of Wight
… between rates of cliff retreat (which reduces gully extent) and headwards incision caused by knickpoint migration (which increases gully extent). To inform the choice and parameterisation of the numerical model used in this research an empirical-conceptual model of gully evolution was initially …
-
Late Quaternary landscape evolution and environmental change in Charwell Basin, South Island, New Zealand
… and, subsequent to river abandonment, gully incision prior to and coeval with loess accumulation. Spatial heterogeneity in loess sheet preservation showed a complex history of loess accumulation and erosion. A critical profile curvature range of -0.005 to -0.014 (d²z/dx², m⁻¹) for loess …
-
Soil erosion and land degradation in the Swartland and Sandveld, Western Cape province, South Africa : a re-evaluation
… together with rainsplash, while piping, rill and gully erosion are all forms of constrained water erosion. Erosivity and erodibility are both important factors in determining the vulnerability of an area to soil erosion. By their understanding of the factors involved in the course of degradation, …
-
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 …
Page 1 of 3