نتایج جستجو برای: large river

تعداد نتایج: 1105254  

2001
Tolessa Deksissa Jurgen Meirlaen Peter J. Ashton Peter A. Vanrolleghem

Increasing water scarcity in many countries provides a strong impetus for investments in water quality remediation at the basin or sub-basin scale as a means to increase water availability. The application of mathematical river water quality modelling, as a support tool to evaluate remediation options, is often limited by the availability of reliable data. Current proposals to use the River Wat...

Journal: :Environmental Health Perspectives 1983
L Polissar R K Severson E S Boatman

It is important to note that my presentation was a summary of our work and that a paper with a fuller description of procedures and detailed tables and risk estimates will be published in another journal (1). One questioner asked what factors determined "no exposure" and what proportions of the cases and controls had no exposure? For each place of residence or work, the following factors could ...

Journal: :Environmental science. Processes & impacts 2015
A Holbach Y Bi Y Yuan L Wang B Zheng S Norra

Ecological consequences of large dams, particularly regarding the Three Gorges Dam (TGD) on the Yangtze River in China, have been controversially and internationally discussed. Water quality within the Three Gorges Reservoir (TGR) has been deteriorated by highly underestimated eutrophication and algal blooms. Globally, the TGR is delineated from other comparable reservoirs by its low mean water...

Journal: :Remote Sensing 2014
Sadiq I. Khan Yang Hong Jonathan J. Gourley Muhammad Umar Khattak Tom De Groeve

Flood monitoring was conducted using multi-sensor data from space-borne optical, and microwave sensors; with cross-validation by ground-based rain gauges and streamflow stations along the Indus River; Pakistan. First; the optical imagery from the Moderate Resolution Imaging Spectroradiometer (MODIS) was processed to delineate the extent of the 2010 flood along Indus River; Pakistan. Moreover; t...

2009
Norm McBride

Overview The 257 km Mohawk River is the second longest river in New York State with the lower 47 km located within the Capital District (Albany-Schenectady-Troy) area, the state’s fourth largest metropolitan area. The river is also part of the New York State Barge Canal system. The magnitude of the resource, its close proximity to large numbers of people, and environmental assessment needs rela...

2014
Dieter Rank Stefan Wyhlidal Katharina Schott Martin Jung Gerhard Heiss Marian Tudor

The isotope record of the Danube River water at Vienna station probably is the longest dataset of a large river worldwide: 3H record since 1963, stable isotopes 2H and 18O records since 1968. From the 2H-18O relation (“deuterium excess”) can be concluded that the isotopic composition in the Danube River water reflects mainly the isotopic relations in the precipitation in the catchment area with...

2017
XiaoJian Wu Akshat Kumar Daniel Sheldon Shlomo Zilberstein

Stochastic network design is a general framework for optimizing network connectivity. It has several applications in computational sustainability including spatial conservation planning, pre-disaster network preparation, and river network optimization. A common assumption in previous work has been made that network parameters (e.g., probability of species colonization) are precisely known, whic...

2003
Donald F. Boesch

A report produced for The Fertilizer Institute by the University of Alabama entitled The Role of the Mississippi River in the Gulf of Mexico Hypoxia raises several questions about whether the large-scale oxygen depletion (hypoxia) in bottom waters of the Louisiana continental shelf is the result of anthropogenic nutrient loading from the Mississippi River, as has been reported in the scientific...

2009
Jeroen H. J. Ensink Christopher A. Scott Simon Brooker Sandy Cairncross

The disposal of untreated urban sewage in to open water bodies is common in most developing countries. This poses potential negative consequences to public health and agricultural sustainability. Hyderabad, one of India’s largest cities, disposes large amounts of its wastewater untreated into the Musi River, from where it is used, with the aid of irrigation weirs, for agricultural production. T...

2004
Christopher Potter Pusheng Zhang Steven Klooster Vanessa Genovese Shashi Shekhar Vipin Kumar

Long-term (20 yr) river discharge records from 30 of the world’s largest river basins have been used to characterize surface hydrologic flows in relation to net precipitation inputs, ocean climate teleconnections, and human land/water use patterns. This groundwork study is presented as a precedent to distributed simulation modeling of surface hydrologic flows in large river basins. Correlation ...

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