搜索结果: 31-43 共查到“水文化学 water”相关记录43条 . 查询时间(0.703 秒)
Hydro-chemical characteristics of river water around Toyama bay and preliminary consideration of nitrate load toward the bay
NO3--N load Stable isotopic ratio Inorganic ion chemistry Tritium activity Toyama bay
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2009/7/14
To understand hydro-chemical characteristics of river water and NO3--N load toward Toyama bay through the base flow. The hydrological field survey and analysis of inorganic ion chemistry, stable isoto...
Isotopic altitude effect and discharge characteristics of river water in Yakushima Island, southwestern Japan
Yakushima Island River water Altitude effect Stable isotopic composition
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2009/7/14
Isotopic compositions were analyzed to grasp the altitude effect observed in and the discharge characteristics of river water in Yakushima Island, southwestern Japan. The isotopic characteristics of t...
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
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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...
Boron water quality for the Plynlimon catchments
Boron water quality Plynlimon catchments
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2009/6/8
Boron concentrations in rainfall, throughfall and stemflow for Spruce stands, mist, streamwater and groundwater are compared with chloride to assess atmospheric sources and catchment input-output bala...
Trends and seasonality in stream water chemistry in two moorland catchments of the Upper River Wye, Plynlimon
stream water chemistry Upper River Wye moorland catchments
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2009/6/8
Stream water chemistry in the Cyff and Gwy subcatchments within the headwaters of the River Wye has been monitored regularly since 1980. In the Gwy, which is a predominantly semi-natural grassland ca...
Water flow pathways and the water balance within a head-water catchment containing a dambo：inferences drawn from hydrochemical investigations
Water flow pathways hydrochemical investigations water balance
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2009/5/27
Dambos, seasonally saturated wetlands, are widespread in headwater catchments in sub-Saharan Africa. It is widely believed that they play an important role in regional hydrology but, despite research ...
Water and nitrogen processes along a typical water flowpath and streamwater exports from a forested catchment and changes after clear-cutting：a modelling study
nitrogen water flowpath
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2009/5/18
A two dimensional model, FEMMA, to describe water and nitrogen (N) fluxes within and from a forested first-order catchment (Kangasvaara in Eastern Finland) was constructed by linking the most signifi...
Towards benchmarking an in-stream water quality model
in-stream water quality model general quality assessment
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2009/5/6
A method of model evaluation is presented which utilises a comparison with a benchmark model. The proposed benchmarking concept is one that can be applied to many hydrological models but, in this inst...
Determination of bromide, chloride, fluoride, nitrate and sulphate by ion chromatography: comparisons of methodologies for rainfall, cloud water and river waters at the Plynlimon catchments of mid-Wales
bromide chloride fluoride nitrate sulphate Plynlimon catchments
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2009/5/6
The results of determination of bromide, chloride, fluoride, nitrate and sulphate using ion chromatography (IC) are compared with those obtained by colorimetric and inductively coupled plasma optical ...
Incorporating landscape characteristics in a distance metric for interpolating between observations of stream water chemistry
stream water chemistry landscape characteristics
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2009/5/6
Spatial patterns of water chemistry along stream networks can be quantified using synoptic or "snapshot" sampling. The basic idea is to sample stream water at many points over a relatively short perio...
Water quality limits for Atlantic salmon (Salmo salar L.) exposed to short term reductions in pH and increased aluminum simulating episodes
acid neutralizing capacity pH Atlantic salmon
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2009/4/29
Acidification has caused the loss or reduction of numerous Atlantic salmon (Salmo salar L.) populations on both sides of the North Atlantic. Acid deposition peaked in the 1980's and resulted in both c...
Using official map data on topography, wetlands and vegetation cover for prediction of stream water chemistry in boreal headwater catchments
water chemistry dissolved organic carbon temporal resolution
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2009/4/28
A large part of the spatial variation of stream water chemistry can be related to inputs from headwater streams. In order to understand and analyse the dominant processes taking place in small and het...
Ground water hydrochemical characteristics: seawater intruded area in eastern and southern coast of Laizhou Bay
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2007/8/24
Abstract: Eastern and southern coastal zones of Laizhou Bay are the most representative seawater intruded areas in the world, with two intrusion sources of contemporary seawater and paleob...