Channel geometry ; Fluvial hydrology ; Gulf of Mexico ; Mexico ; Sediment transport ; Stream ; Suspended load ; Tropical zone ; Veracruz
There have been few studies of rivers along the Mexican Gulf Coastal Plain. A. uses fieldwork data and data from Mexican agencies to draw three main conclusions. First, streamflow and suspended sediment reflect summer trade winds and tropical
Catastrophe ; European part of Russia ; Forecast ; Hydrodynamics ; Mathematical model ; Model ; Nizhni Novgorod ; Oka ; Pollution ; Stream ; Streamflow
Arid area ; Carrying capacity ; Channel geometry ; China ; Flood ; Hebei ; Hydraulic works ; Hydrological regime ; Roughness ; Semi-arid area ; Stream ; Water deficit
The Hutuo River is located in the semi-arid areas in China. Due to lack of water resources in these areas, changes in flow regime, mainly reduction in runoff downstream from the reservoirs, have been tremendous. As a result of decrease in flow power
on a deterministic sensitivity technique involving partial differentiation of soil properties, flow characteristics, and geometrical parameters of the river channels. Sensitivity coefficients were used further to generate susceptibility indices, indicating
Applied ecology ; Classification ; Ecosystem ; Longitudinal section ; South Africa ; Stream ; Water ; Water management ; Water quality
The recognition of the Reserve by the new South African Water Law poses challenges for river scientists. The ecological water requirement or environmental flow is recognised by that part of the Reserve know as the ecological Reserve
Australia ; Bank erosion ; Geotechnics ; Mass movement ; Model ; New South Wales ; Riparian vegetation ; Stream
Plants interact with and modify the processes of riverbank erosion by altering bank hydrology, flow hydraulics and bank geotechnical properties. The physically based slope stability model GWEDGEM was used to assess how changes in bank geotechnical
Biogenic process ; Israel ; Lacustrine sedimentation ; Lake ; Seasonal variation ; Sedimentation rate ; Spatial variation ; Stream ; Suspended load
bottom. The rate of sedimentation near the Jordan's inflow is highly correlated to flow discharge in the river, while in the centre of the lake the seasonal sedimentation pattern is mainly correlated to the bloom period of Peridinium gatunense.
Aerial photography ; British Columbia ; Canada ; Carrying capacity ; Channel geometry ; Flood ; Floodplain ; Geographical information system ; Sediment budget ; Stream
an analytical stereoplotter. Data were transfered to a geographic information system (GIS) to analyse changes during 4 consecutive periods. Significant morphologic change occurs roughly once every 5 years when flows are large enough to erode and entrain large
European part of Russia ; Geographical information system ; Gulf of Finland ; Human impact ; Karelia ; Ladoga Lake ; Man-environment relations ; Streamflow ; Thematic map ; Water pollution ; Water quality ; Water resources
Arctic Region ; Asian part of Russia ; Fast ice ; Flood ; Ice ; Interannual variability ; Kara Sea ; Lena ; Linear regression ; Ob ; Spatial variation ; Statistical analysis ; Streamflow ; Years 1980-89 ; Years 1990-99 ; Yenisey
Geomorphological characteristics of small debris flows on Junior's Kop, Marion Island, maritime sub-Antarctic
The geomorphological characteristics of small debris flows in a maritime sub-Antarctic environment are described. The morphological and sedimentological characteristics of the debris flows are comparable to debris flows documented for other parts
of the world; their initiation appears closely linked to the unusual environment in which they are found. The debris flows are triggered by sediment mobilization upon saturation of the frost-heaved surface gravel and overland flow over the low-permeability
and frost-susceptible slope materials. Morphological effects of the flows are short-lived due to obliteration by subsequent frost heave activity.
on detailed surface roughness data. Roughness profiles perpendicular to the flow are used to calculate the wet cross-sectional area and hydraulic radius given a certain water level. The algorithm of Savat is then applied to calculate the hydraulic resistance
. The model is able to predict flow velocities reasonably well from discharge and roughness data only.