搜索结果: 1-15 共查到“水文学 Concentration”相关记录22条 . 查询时间(0.126 秒)
Using Band Ratio, Semi-Empirical, Curve Fitting, and Partial Least Squares (PLS) Models to Estimate Cyanobacterial Pigment Concentration from Hyperspectral Reflectance
phycocyanin chlorophyll band ratio MGM water quality
2015/1/16
This thesis applies several different remote sensing techniques to data collected from 2005 to 2007 on central Indiana reservoirs to determine the best performing algorithms in estimating the cyanobac...
An efficient method for measuring CO2 concentration in gassy lakes: Application to Lakes Nyos and Monoun, Cameroon
Lake Nyos Lake Monoun in-situ analysis dissolved CO2 gas self-lifting
2017/8/9
A simple and efficient method for measuring CO2 concentration of deep water of gassy lakes is proposed. This method is based on the gas self-lifting in a plastic hose that is deployed into deep water ...
Calculation of time of concentration for hydrologic design and analysis using geographic information system vector objects
time of concentration hydrologic design geographic information system vector objects
2009/12/4
Synthetic unit hydrographs are commonly used to estimate runoff from rainfall events in a hydrologic analysis. A key parameter required as part of any hydrologic analysis using a synthetic unit hydrog...
An Evaluation of the Importance of Transmissivity,Head and Concentration Data for Contaminant Transport Modelling
Importance of Transmissivity Concentration Data Contaminant Transport Modelling
2009/10/27
The 3 basic data types of contaminant hydrology are examined by stochastic
modelling of a groundwater contamination case. The stochastic transport model,
which is of the Monte Carlo type, uses a num...
Comparison of Sediment Rating Curves Developed on Load and on Concentration
Sediment Rating Curves Load Concentration
2009/10/23
A sediment rating curve developed as a lincar regression on logged values
which is back-transformed must be corrected for the bias introduced by the log
transformation. This article shows that the v...
Concentration Data and Dimensionality in Groundwater Models:Evaluation Using Inverse Modelling
Concentration Data Groundwater Models Inverse Modelling
2009/10/23
A three-dimensional inverse groundwater flow and transport model that fits hydraulic-
head and concentration data simultaneously using nonlinear regression
is presented and applied to a layered sand...
SEDIMENT FLOW WITH HIGH CONCENTRATION AND ITS MOVEMENT BEHAVIOR
SEDIMENT FLOW HIGH CONCENTRATION MOVEMENT BEHAVIOR
2009/10/19
In the Yellow River, the annual average sediment discharge and the annual average sediment concentration are the highest in the world. The measured maximum concentration approaches 1600 kg/m3 in its t...
TOXICITY OF NICKEL IN ARTIFICIAL SEDIMENT ON ACETYLCHOLINESTERASE ACTIVITY AND HEMOGLOBIN CONCENTRATION OF THE AQUATIC FLEA, MOINA MACROCOPA
freshwater zooplankter water flea environmental toxicants
2009/10/13
The water flea Moina macrocopa, an important freshwater zooplankter, is a useful test species for the study of sensitivity to environmental toxicants, and is recognized as a general representative of ...
Sediment Concentration in Lakes Where the Natural Sediment Balance Have Been Changed
Sediment Concentration Lakes Natural Sediment Balance
2009/6/15
Sediment Concentration in Lakes Where the Natural Sediment Balance Have Been Changed.
A simple model for predicting solute concentration in agricultural tile lines shortly after application
solute concentration pesticide contamination Agricultural tile drainage lines
2009/6/8
Agricultural tile drainage lines have been implicated as a source of pesticide contamination of surface waters. Field experiments were conducted and a simple model was developed to examine preferenti...
Spatial variability of nitrate concentration in lakes in Snowdonia, North Wales, UK
Spatial variability North Wales nitrate concentration
2009/5/26
At a regional scale, high nitrate (NO3‾) concentrations in upland surface waters generally occur in tandem with high nitrogen (N) deposition levels. However, significant differences in the patte...
Evaluation of 1-D tracer concentration profile in a small river by means of Multi-Layer Perceptron Neural Networks
1-D tracer concentration profile small river Multi-Layer Perceptron Neural Networks
2009/5/13
The prediction of temporal concentration profiles of a transported pollutant in a river is still a subject of ongoing research efforts worldwide. The present paper is aimed at studying the possibility...
Relationship between dissolved oxygen concentration of bottom water and macrophyte biomass in the southern basin of Lake Biwa, Japan
dissolved oxygen submerged macrophyte southern basin of Lake Biwa
2009/4/2
The horizontal distribution of dissolved oxygen (DO) concentrations on the lake bottom was investigated on September 2-5, 2002. At 36 out of the 84 sites, DO concentrations were at less than 50% of sa...
Prediction for temporal changes of cell concentration of the cyanobacterium Microcystis in Tenryu River, using the fluid dynamic model of cyanobacteria
range of the shift determination of initial concentration of Microcystis
2009/4/1
A toxic cyanobacterial bloom caused by Microcystis occurs from spring to autumn in Lake Suwa, a eutrophic lake in Japan. The distribution of Microcystis cells in the Tenryu River flowing from Lake Suw...
The sensitivity of stand-scale photosynthesis and transpiration to changes in atmospheric CO2 concentration and climate
atmospheric CO2 transpiration
2009/3/25
The 3-dimensional forest model MAESTRO was used to simulate daily and annual photosynthesis and transpiration fluxes of forest stands and the sensitivity of these fluxes to potential changes in atmosp...