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Derivation of effective and efficient data set with subtractive clustering method and genetic algorithm
Derivation effective and efficient data set subtractive clustering method genetic algorithm
2009/12/4
Success of any forecasting model depends heavily on reliable historical data, among others. Data are needed to calibrate, fine tune and verify any simulation model. However, data are very often contam...
An assessment of Bayesian bias estimator for numerical weather prediction
Bayesian bias estimator numerical weather prediction
2009/11/2
Various statistical methods are used to process operational Numerical Weather Prediction (NWP) products with the aim of reducing forecast errors and they often require sufficiently large training data...
Comparative rainfall data analysis from two vertically pointing radars,an optical disdrometer,and a rain gauge
rainfall data analysis vertically pointing radars optical disdrometer rain gauge
2009/11/2
The authors present results of a comparative analysis of rainfall data from several ground-based instruments. The instruments include two vertically pointing Doppler radars, S-band and X-band, an opti...
Quantification of tillage,plant cover,and cumulative rainfall effects on soil surface microrelief by statistical,geostatistical and fractal indices
tillage plant cover cumulative rainfall effects soil surface microrelief
2009/11/2
Changes in soil surface microrelief with cumulative rainfall under different tillage systems and crop cover conditions were investigated in southern Brazil. Surface cover was none (fallow) or the crop...
基于近几年大量的实测资料，对长江口及其邻近海域洪季期间悬沙浓度的时空分布特征进行了分析.结果表明，悬沙浓度空间上以杭州湾测点最高，其次是长江口内、长江口外，舟山海域最低；悬沙平面分布总体态势为近岸高而外海低；长江口纵向上自口内经口门向口外悬沙浓度大致呈“低-高-低”分布，沿杭州湾测点则由西向东逐渐降低；横向比较长江口外海滨四个测点发现其悬沙浓度自北向南顺次升高；悬沙浓度一般由表及底逐渐增大，但在不...
Characterization of peak flow events with local singularity method
peak flow events local singularity method
2009/10/30
Three methods, return period, power-law frequency plot (concentration-area) and local singularity index, are introduced in the paper for characterizing peak flow events from river flow data for the pa...
On the scaling characteristics of observed and simulated spatial soil moisture fields
scaling characteristics observed simulated spatial soil moisture fields
2009/10/30
By providing continuous high-resolution simulations of soil moisture fields, distributed hydrologic models could be powerful tools to advance the scientific community's understanding of the space-time...
PUMPING TESTS AND HYDROGEOLOGICAL INVESTIGATIONS OF AN ARTESIAN AQUIFER NEAR HORSENS,DENMARK
PUMPING TESTS HYDROGEOLOGICAL INVESTIGATIONS ARTESIAN AQUIFER
2009/10/30
In the Egebjerg area, near Horsens, several aquifers consisting of glacial outwash material deposited in a glacial eroded buried valley in the Tertiary formation have been encountered.
The lowest of ...
ON THE ADHESION OF PORE WATER IN FINNISH ARGILLACEOUS SEDIMENTS OF DIFFERENT AGE
ADHESION PORE WATER FINNISH ARGILLACEOUS SEDIMENTS DIFFERENT AGE
2009/10/30
In this investigation the conduct of pellicular water influenced by adhesion
forces in fine grain soils of different age and at different degrees
of consolidation is demonstrated. Because of sparse ...
GROUNDWATER TIME SERIES
GROUNDWATER TIME SERIES
2009/10/30
The term "stochastic hydrology" implies a statistical approach to hydrologic
problems as opposed to classic hydrology which can be considered deterministic
in its approach. During the International ...
When a test pumping from an artesian aquifer has been performed, the result
will often exibit a more or less confusing variety of features. The reason for
this may, of course, be that the geological...
CROSS-SPECTRUM ANALYSIS OF GROUNDWATER LEVELS IN AN ESKER
CROSS-SPECTRUM ANALYSIS GROUNDWATER LEVELS ESKER
2009/10/30
A study is made on 30-yc~r records of precipitation, river water stage,
and groundwater lcvels in the esker area south of Uppsala, Sweden, using
cross-spectrum analysis. The results are summarizcd a...
INFLOW OF RIVER WATER TO THE BALTIC SEA IN THE PERIOD 1951-1960
INFLOW OF RIVER WATER BALTIC SEA PERIOD 1951-1960
2009/10/30
The inflow of river water to the Baltic Sea is evaluated for the period
1951-60. A proposal is made for a re-evaluation of the estimates for
earlier periods and for future computations on a continuo...
A NEW SIMPLIFIED INSTRUMENT FOR WATER TEMPERATURE MEASUREMENTS
NEW SIMPLIFIED INSTRUMENT WATER TEMPERATURE MEASUREMENTS
2009/10/30
Through the rapid development in the field of electrotechniques and the
development ot highly sophisticated recision components it has been possible
to design a new simplified electrical instrumcnt ...
NUMERICAL ANALYSIS OF FINITE DEPTH PROBLEMS IN SOIL-WATER HYDROLOGY
NUMERICAL ANALYSIS FINITE DEPTH PROBLEMS SOIL-WATER HYDROLOGY
2009/10/29
The types of initial and boundary conditions which may be involved in the
flow of water through an unsaturated profile to a water table are discussed.
A numerical solution of the flow equation is th...