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Spatial and temporal variation in pH, alkalinity and conductivity in surface runoff and groundwater for the Upper River Severn catchment
pH surface runoff alkalinity conductivity Upper River Severn catchment
2009/6/8
Measurements of pH, alkalinity and electrical conductivity are used to examine the extent of the spatial and temporal variation in stream and ground water chemistry for the Upper Severn catchment, Pl...
Acid neutralization capacity measurements in surface and ground waters in the Upper River Severn, Plynlimon：from hydrograph splitting to water flow pathways
Acid Neutralization Capacity water flow pathways hydrograph splitting
2009/6/8
Acid Neutralization Capacity (ANC) data for ephemeral stream and shallow groundwater for the catchments of the upper River Severn show a highly heterogeneous system of within-catchment water flow path...
The hydrochemistry of the headwaters of the River Severn, Plynlimon
hydrochemistry Water quality River Severn
2009/6/8
Water quality data spanning 13 years and covering an extensive range of major, minor and trace elements in rain and stream waters at Plynlimon in mid Wales, are presented. Rainfall water chemistry is ...
Longitudinal dispersion in natural channels: 3. An aggregated dead zone model applied to the River Severn, U.K.
Channels ispersion dead zones tracers
2009/3/24
An Aggregated Dead Zone (ADZ) model is presented for longitudinal dispersion of tracer in river channels, in which the channel cross-section is divided into two parallel regions: the bulk flow and dea...
Longitudinal dispersion in natural channels: 2. The roles of shear flow dispersion and dead zones in the River Severn, U.K.
Channels dispersion dead zones tracers River Severn
2009/3/24
The classical one-dimensional advection-diffusion equation (ADE) gives an inadequate description of tracer cloud evolution in the River Severn, U.K. A solute transport model incorporating the effects ...
Longitudinal dispersion in natural channels: l. Experimental results from the River Severn, U.K.
Channels dispersion tracers River Severn
2009/3/24
A tracer experiment using Rhodamine WT dye was carried out to measure longitudinal dispersion in a 14-km reach of the River Severn in Wales, U.K. The river’s discharge was measured at six points and t...
Impacts of forestry on nitrogen in upland and lowland catchments: a comparison of the River Severn at Plynlimon in mid-Wales and the Bedford Ouse in south-east England using the INCA Model
afforestation water quality nitrogen modelling land-use change Wales
2009/3/5
The impacts of afforestation at Plynlimon in the Severn catchment, mid-Wales, and in the Bedford Ouse catchment in south-east England are evaluated using the INCA model to simulate Nitrogen (N) fluxes...
The water quality functioning of the upper River Severn, Plynlimon, mid-Wales: issues of monitoring, process understanding and forestry
nutrients trace metals Plynlimon River Severn forestry fractals
2009/3/5
An overview of hydrochemical studies of the upper River Severn catchment in the Plynlimon region of mid-Wales, as linked to twenty years of research at CEH Wallingford, is presented. The work provides...