搜索结果: 151-165 共查到“水文学 Groundwater”相关记录177条 . 查询时间(0.062 秒)
Dissolved iodine in rainfall, cloud, stream and groundwater in the Plynlimon area of mid-Wales
rainfall cloud groundwater Plynlimon area
2009/5/6
Iodine concentrations in rainfall, cloud water, throughfall, stemflow, stream water and groundwater are described for the upper River Severn Plynlimon catchments in mid-Wales. Iodine concentrations av...
Characterising groundwater-dominated lowland catchments：the UK Lowland Catchment Research Programme (LOCAR)
groundwater-dominated lowland catchments Lowland Catchment Research
2009/5/6
This paper reports on a major UK initiative to address deficiencies in understanding the hydro-ecological response of groundwater-dominated lowland catchments. The scope and objectives of this nationa...
Predicting land-use change and its impact on the groundwater system of the Kleine Nete catchment, Belgium
Special Report on Emission Scenarios Kleine Nete catchment groundwater system
2009/5/6
Land-use changes are frequently indicated to be one of the main human-induced factors influencing the groundwater system. For land-use change, groundwater research has mainly focused on the change in...
Dynamic analysis of groundwater discharge and partial-area contribution to Pukemanga Stream, New Zealand
Dynamic analysis groundwater discharge
2009/5/4
The proportion and origin of groundwater contribution to streamflow from agricultural catchments is relevant to estimation of the effects of nitrate leached from the soil on the quality of surface wat...
Modelling groundwater-dependent vegetation patterns using ensemble learning
Vegetation patterns groundwater
2009/4/29
Vegetation patterns arise from the interplay between intraspecific and interspecific biotic interactions and from different abiotic constraints and interacting driving forces and distributions. In thi...
Spatially explicit groundwater vulnerability assessment to support the implementation of the Water Framework Directive–a practical approach with stakeholders
Water Framework Directive groundwater
2009/4/28
The main objective of the study presented in this paper was to develop an evaluation scheme which is suitable for spatially explicit groundwater vulnerability assessment according to the Water Framew...
Influence of aquifer and streambed heterogeneity on the distribution of groundwater discharge
aquifer streambed heterogeneity groundwater discharge
2009/4/27
The spatial distribution of groundwater fluxes through a streambed can be highly variable, most often resulting from a heterogeneous distribution of aquifer and streambed permeabilities along the flow...
An Estimate of Local Bomb-Produced 36Cl Fallout Using the Depth Profile of Groundwater in the Tsukuba Upland, Central Japan
Groundwater Central Japan Tsukuba Upland
2009/4/13
The depth profile of 36Cl/Cl ratio in groundwater was investigated in the Tsukuba Upland of central Japan. The obtained results clearly show the influence of bomb-produced 36Cl; the highest 36Cl/Cl ra...
Effects of clear-cutting of forest on the chemistry of a shallow groundwater aquifer in southern Norway
Groundwater clear-cutting water chemistry monitoring.
2009/3/24
As part of the national monitoring programme for long-range transported air pollutants, four groundwater aquifers in southern Norway were monitored for acidification trends during the period 1980 – 19...
Sodium and chloride levels in rainfall, mist, streamwater and groundwater at the Plynlimon catchments, mid-Wales: inferences on hydrological and chemical controls
Sodium chloride rainfall mist
2009/3/24
Variations in sodium and chloride in atmospheric inputs (rainfall and mist), stream runoff and groundwater stores are documented for the upper Severn River (Afon Hafren and Afon Hore catchments), Plyn...
Simplicity versus complexity in modelling groundwater recharge in Chalk catchments
Chalk modelling groundwater recharge
2009/3/17
Models of varying complexity are available to provide estimates of recharge in headwater Chalk catchments. Some measure of how estimates vary between different models can help guide the choice of mode...
Incorporation of groundwater losses and well level data in rainfall-runoff models illustrated using the PDM
groundwater rainfall-runoff model ephemeral stream
2009/3/17
Intermittent streamflow is a common occurrence in permeable catchments, especially where there are pumped abstractions to water supply. Many rainfall-runoff models are not formulated so as to represen...
Assessment of spatial structure of groundwater quality variables based on the entropy theory
transinformation correlation spatial structure
2009/3/12
Fundamental to the spatial sampling design of a groundwater quality monitoring network is the spatial structure of groundwater quality variables. The entropy theory presents an alternative approach to...
The O and H stable isotope composition of freshwaters in the British Isles. 2. Surface waters and groundwater
Stable isotopes surfacewaters groundwater British Isles
2009/3/12
The utility of stable isotopes as tracers of the water molecule has a long pedigree. The study reported here is part of an attempt to establish a comprehensive isotopic "baseline" for the British Isle...
Nitrogen dynamics in the shallow groundwater of a riparian wetland zone of the Garonne, SW France: nitrate inputs, bacterial densities, organic matter supply and denitrification measurements
riparian zone nitrate removal spatial variations
2009/3/12
This study highlights the role of interactions between surface and sub-surface water of the riparian zone of a large river (the Garonne, SW France). Information is given about the role of surface wate...