搜索结果: 91-105 共查到“知识库 水文物理学”相关记录452条 . 查询时间(2.301 秒)
热带西太平洋海域上层海洋热含量的 CSEOF 分析
热含量 时空变化 循环平稳经验正交函数(CSEOF)分析 ENSO事件 Argo剖面资料 热带西太平洋
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2012/3/9
基于月平均Argo温、盐度剖面、纬向风和Niñ o3. 4指数等资料, 利用循环平稳经验正交函数(CSEOF)分解法、最大熵谱分析和相关分析等方法, 研究了热带西太平洋海域上层(0—700m)海洋热含量的时空变化特征, 并探讨了其年际变化的可能原因。结果表明, 热带西太平洋海域上层海洋热含量距平场具有显著的东-西向反位相振荡, 且这种振荡除了具有较明显的季节变化外, 还存在着较强的准...
Vertical distribution and composition of phytoplankton under the influence of an upper mixed layer
upper mixed layer aquatic communities phytoplankton species water column
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2010/4/6
The vertical distribution of phytoplankton is of fundamental importance for the dynamics and structure of aquatic communities. Here, using an advection-reaction-diffusion model, we investigate the dis...
Uncertainty in the determination of soil hydraulic parameters and its influence on the performance of two hydrological models of different complexity
soil hydraulic parameters performance two hydrological models different complexity
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2010/2/20
Data of soil hydraulic properties forms often a limiting factor in unsaturated zone modelling, especially at the larger scales. Investigations for the hydraulic characterization of soils are time-cons...
Soil bioengineering for risk mitigation and environmental restoration in a humid tropical area
Soil bioengineering risk mitigation environmental restoration humid tropical area
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2010/2/20
The use of soil bio-engineering techniques in developing countries is a relevant issue for disaster mitigation, environmental restoration and poverty reduction. Research on the autochthonal plants sui...
集合滤波和三维变分混合数据同化方法研究
混合数据同化方法 集合调整卡尔曼滤波 三维变分
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2012/3/9
发展了一种新的混合数据同化方法——基于集合滤波和三维变分的混合数据同化方法。该方法将集合调整卡尔曼滤波(ensembleadjustmentKalmanfilter, EAKF)得到的集合样本扰动通过一个转换矩阵的形式直接作用到背景场上, 利用顺序滤波的思想得到分析场的一个扰动; 然后在三维变分(threedimensionalvariationalanalysis, 3D-Var)的框架下与观测...
Corrigendum to “Earth's Critical Zone and hydropedology:concepts,characteristics,and advances” published in Hydrol. Earth Syst. Sci.,14,25–45,2010
Corrigendum Earth's Critical Zone hydropedology concepts characteristics advances
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2010/2/1
Corrigendum to “Earth's Critical Zone and hydropedology:concepts,characteristics,and advances” published in Hydrol. Earth Syst. Sci.,14,25–45,2010。
Thermal conductivity of unsaturated clay-rocks
Thermal conductivity unsaturated clay-rocks
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2010/2/1
The parameters used to describe the electrical conductivity of a porous material can be used to describe also its thermal conductivity. A new relationship is developed to connect the thermal conductiv...
Forecasting high waters at Venice Lagoon using chaotic time series analysis and nonlinear neural networks
high waters Venice Lagoon chaotic time series analysis nonlinear neural networks
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2009/12/7
Time series analysis using nonlinear dynamics systems theory and multilayer neural networks models have been applied to the time sequence of water level data recorded every hour at 'Punta della Salute...
Genetic programming as a model induction engine
Genetic programming model induction engine
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2009/12/7
Present day instrumentation networks already provide immense quantities of data, very little of which provides any insights into the basic physical processes that are occurring in the measured medium....
Data-based mechanistic modelling and forecasting of hydrological systems
Data-based mechanistic modelling forecasting hydrological systems
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2009/12/7
The paper presents a data-driven approach to the modelling and forecasting of hydrological systems based on nonlinear time-series analysis. Time varying parameters are estimated using a combined Kalma...
Subsymbolic methods for data mining in hydraulic engineering
Subsymbolic methods data mining hydraulic engineering
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2009/12/7
This paper describes the results of experiments with artificial neural networks (ANNs) and genetic programming (GP) applied to some problems of data mining. It is shown how these subsymbolic methods c...
Hydroinformatics and urban drainage:an agenda for the beginning of the 21st century
Hydroinformatics and urban drainage agenda beginning of the 21st century
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2009/12/7
The developing insights of hydroinformatics have much to offer the water industry, and particularly urban storm and wastewater drainage. This paper reviews aspects of data mining and knowledge discove...
Linear advection modelling:the issue of divergent flows
Linear advection modelling issue divergent flows
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2009/12/7
Schemes for linear advection modelling in multiple dimensions on structured grids use either time-splitting or an unsplit approach for flux computation. In the case of strongly divergent flows, time-s...
Managing temporal data in a comprehensive modeling environment
Managing temporal data comprehensive modeling environment
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2009/12/7
Numerous graphical pre- and post-processors have been developed for numerical modeling. Many of these systems support numerical models that can be used for both steady state and transient simulations....
The gender issue in hydroinformatics,or Orpheus in the Underworld
gender issue hydroinformatics Orpheus Underworld
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2009/12/7
Hydroinformatics is a sociotechnical endeavour, which is to say that it deals with social processes that cannot proceed without the provision of appropriate technologies and technologies that cannot s...