搜索结果: 256-270 共查到“知识库 水文地理学”相关记录520条 . 查询时间(2.784 秒)
“Blueprint”for the UP Modelling System for Large Scale Hydrology
UP Modelling System Large Scale Hydrology
<
2009/6/8
There are at least two needs to be met by the current research efforts on large scale hydrological modelling. The first is for practical conceptual land-surface hydrology schemes for use with existing...
This paper explores the establishment of transfer functions for describing the annual oscillation of unconfined aquifer water levels in response to effective precipitation. A simple saturated zone rep...
The role of diagenisis in the hydrogeological stratification of carbonate aquifers：an example from the chalk at Fair Cross, Berkshire, UK
hydrogeological stratification carbonate aquifers Fair Cross
<
2009/6/8
Carbonate rocks form important aquifers in many parts of the world and in north-west Europe the Chalk is a primary source of potable water. When flushed with relatively fresh groundwaters, the Chalk ...
The occurrence of groundwater in the Lower Palaeozoic rocks of upland Central Wales
groundwater upland Central Wales Lower Palaeozoic rocks
<
2009/6/8
A series of boreholes of up to 50 m depth, drilled into Lower Palaeozoic mudstone, shale and greywacke bedrock in the headwater catchment areas of the River Severn at Plynlimon in Central Wales, show...
Norwegian lakes show widespread recovery from acidification：results from national surveys of lakewater chemistry 1986-1997
Acid Neutralising Capacity Sulphate concentrations lakes
<
2009/6/5
Surveys of 485 lakes in Norway conducted in 1986 and again in 1995 reveal widespread chemical recovery from acidification. Sulphate concentrations in lakes have decreased by 40% in acidified areas in ...
A regional application of the MAGIC model in Wales：calibration and assessment of future recovery using a Monte-Carlo approach
Wales Model of Acidification of Groundwater In Catchment Monte-Carlo approach
<
2009/6/5
A survey and resurvey of 77 headwater streams in Wales provides an opportunity for assessing changes in streamwater chemistry in the region. The Model of Acidification of Groundwater In Catchment (MAG...
Nitrogen leaching from N limited forest ecosystems：the MERLIN model applied to Gårdsjön, Sweden
Nitrogen Sweden forest ecosystems
<
2009/6/5
Chronic deposition of inorganic nitrogen (N) compounds from the atmosphere to forested ecosystems can alter the status of a forest ecosystem from N-limited towards N-rich, which may cause, among other...
The impacts of conifer harvesting on runoff water quality：a regional survey for Wales
runoff water quality Wales regional survey
<
2009/6/5
Major, minor and trace element chemistry of runoff at stormflow and baseflow from 67 catchments (2 to 5 ha in area) has been determined to investigate the effects of clear felling and replanting of co...
Analysis of the impacts of major anion variations on surface water acidity particularly with regard to conifer harvesting：case studies from Wales and Northern England
surface water acidity Wales Northern England
<
2009/6/5
Data on the water quality of streams draining a range of acidic and acid sensitive, mainly afforested, upland catchments in mid- and north-Wales and northern-England are described to investigate the a...
Non-linearity and spatial resolution in a cellular automaton model of a small upland basin
cellular automaton Cam Gill Beck upland basin
<
2009/6/5
The continuing development of computational fluid dynamics is allowing the high resolution study of hydraulic and sediment transport processes but, due to computational complexities, these are rarely ...
30 years of forest hydrology changes at Coalburn：water balance and extreme flows
forest hydrology changes Coalburn extreme flows
<
2009/6/5
The Coalburn experimental catchment, located in the Kielder Forest in northern Britain, was established in 1967 to study the hydrological impacts of upland coniferous plantation forestry. Results of 3...
Modelling rainfall interception in unlogged and logged forest areas of Central Kalimantan, Indonesia
rainfall interception logged forest areas Central Kalimantan
<
2009/6/5
Rainfall interception losses were monitored for twelve months and related to vegetation and rainfall characteristics at the Wanariset Sangai on the upper reaches of the Mentaya river, Central Kalimant...
Land subsidence and hydrodynamic compaction of sedimentary basins
Land subsidence hydrodynamic compaction sedimentary basins
<
2009/6/5
A one-dimensional model is used to investigate the relationship between land subsidence and compaction of basin sediments in response to sediment loading. Analysis of the model equations and numerica...
Combining remotely sensed data using aggregation algorithms
surface energy exchange aggregation algorithms Earth Observing System
<
2009/6/5
This paper describes a strategic approach for providing documentation of the surface energy exchange for heterogeneous land surfaces via the simultaneous, four-dimensional assimilation of several stre...
Riparian landscapes, G.P. Malanson。