搜索结果: 106-120 共查到“知识库 河流学与河口水文学”相关记录211条 . 查询时间(2.44 秒)
A Bayesian spatial assimilation scheme for snow coverage observations in a gridded snow model
Bayesian spatial assimilation scheme snow coverage area precipitation-runoff model snow depletion curve
2009/5/13
A method for assimilating remotely sensed snow covered area (SCA) into the snow subroutine of a grid distributed precipitation-runoff model (PRM) is presented. The PRM is assumed to simulate the snow...
Top-kriging - geostatistics on stream networks
Top-kriging - geostatistics stream networks streamflow-related variables
2009/5/13
We present Top-kriging, or topological kriging, as a method for estimating streamflow-related variables in ungauged catchments. It takes both the area and the nested nature of catchments into account....
Water discharge and sediment flux changes over the past decades in the Lower Mekong River：possible impacts of the Chinese dams
suspended sediment concentration low water levels Lower Mekong River
2009/5/13
The Lower Mekong River has witnessed extremely low water levels over the past few years. There is speculation that the changes are a consequence of the construction and operation of the Chinese casca...
Hydrological model coupling with ANNs
Hydrological model coupling Artificial neural networks
2009/5/13
There is an increasing need for model coupling. However, model coupling is complicated. Scientists develop and improve models to represent physical processes occurring in nature. These models are buil...
Technical Note：Determination of the SCS initial abstraction ratio in an experimental watershed in Greece
watershed Greece abstraction ratio
2009/5/13
The present study was conducted in an experimental watershed in Attica, Greece, using observed rainfall/runoff events. The objective of the study was the determination of the initial abstraction ratio...
GIBSI：an integrated modelling system for watershed management – sample applications and current developments
decision support systems watershed management current developments
2009/5/13
Hydrological and pollutant fate models have long been developed for research purposes. Today, they find an application in integrated watershed management, as decision support systems (DSS). GIBSI is ...
Metal contamination budget at the river basin scale：an original Flux-Flow Analysis (F2A) for the Seine River
Metal contamination river basin scale original Flux-Flow Analysis
2009/5/13
Material flow analysis and environmental contamination analysis are merged into a Flux-Flow analysis (F2A) as illustrated for the metal circulation in the Seine River catchment. F2A combines about 30 ...
Urban metabolism and river systems：an historical perspective – Paris and the Seine, 1790–1970
river systems Urban metabolism historical perspective
2009/5/13
The aim of this paper is to analyse metabolic interaction between Paris and the Seine during the industrial era, 1790–1970, a period marked by strong population growth, technological changes, and the ...
Rivers we can't bring ourselves to clean – historical insights into the pollution of the Moselle River (France), 1850–2000
pollution Moselle River
2009/5/13
As products of both natural and social systems, rivers are highly complex historical objects. We show in this paper that historical analysis works on two different levels: one level, which we call "st...
Experimental analysis of drainage and water storage of litter layers
drainage water storage litter layers
2009/5/13
Many hydrological studies of forested ecosystems focus on the study of the forest canopy and have partitioned gross precipitation into throughfall and stemflow. However, the presence of forest litter ...
Modelling microbiological water quality in the Seine river drainage network: past, present and future situations
faecal coliforms microbiological water quality
2009/5/13
The Seine river watershed is characterized by a high population density and intense agricultural activities. Data show low microbiological water quality in the main rivers (Seine, Marne, Oise) of the ...
选择长江河口崇明岛东部潮滩为典型研究区域, 从2003年7月到2004年7月在崇明东滩(CM)进行了隔月采样, 研究表明水体自身N2O产生速率很低, 沉积物是上覆水体N2O的来源, 沉积物中N2O产生速率在-0.08~1.74 mmolN·m-2·h-1之间, 夏季是N2O产生速率较高的季节. 不同潮滩部位N2O产生速率的差异, 以及N2O产生速率与反硝化速率、温度、溶解氧的相关关系表明中潮滩(C...
用旁侧声纳、浅地层剖面仪, 多普勒流速仪(ADP), 对长江中下游(武汉到河口段)河床进行了走航式的勘测工作, 获得了底床沙波形态的空间分布数据. 根据波高参数可将底床沙波分成4类(Ⅰ, Ⅱ, Ⅲ和Ⅳ), 并剖析了与水面坡降-过水面积的关系. 据沙波分布特征, 并结合100个断面沉积物采集数据, 以及水文实测和模拟参数, 可将河床分为5段(A, B, C, D和E段). A河段属中游蛇曲河型向下游...
Modeling and analysis of collective management of water resources
Integrated Water Resources Management collective management
2009/5/7
Integrated Water Resources Management (IWRM) recommends, among other things, that the management of water resources systems be carried out at the lowest appropriate level in order to increase the tran...
Marine modification of terrestrial influences on Gulf hypoxia：Part II
Gulf hypoxia Marine modification
2009/5/6
This study examines potential marine modification of two classes of terrestrial influence on Gulf hypoxia: (1) the flow of nutrient-rich water from the Mississippi/Atchafalaya River Basin and (2) the ...