نتایج جستجو برای: flood water

تعداد نتایج: 568737  

Journal: :CoRR 2017
Matthew Bartos Brandon P. Wong Branko Kerkez

Leveraging recent advances in technologies surrounding the Internet of Things, “smart” water systems are poised to transform water resources management by enabling ubiquitous real-time sensing and control. Recent applications have demonstrated the potential to improve flood forecasting, enhance rainwater harvesting, and prevent combined sewer overflows. However, adoption of smart water systems ...

Journal: :Environmental science & technology 2004
Theodore Caplow Peter Schlosser David T Ho Rica C Enriquez

In June 2003, two injections of approximately 3.9 mol of sulfur hexafluoride (SF6) were made 8 days apart in the East River, a 25 km tidal strait, to observe solute mixing and dissipation. The first injection occurred at slack before flood, and the second at slack before ebb (flood = northward flow). Tidally synchronized surveys of the SF6 tracer patch, supplemented by vertical profiles, were c...

1999
Nazrul Islam

This paper offers a critique of the cordon approach to flood control that Bangladesh has been pursuing for several decades now. It shows how this approach fails to solve the flood problem, deprives the flood plains from benefits of regular river-inundation, creates a risky situation for the inhabitants inside cordons, brings in new problems of drainage and sanitation, and leads to huge waste of...

Journal: :Remote Sensing 2013
Claudia Kuenzer Huadong Guo Inga Schlegel Vo Quoc Tuan Xinwu Li Stefan W. Dech

Earth Observation is a powerful tool for the detection of floods. Microwave sensors are typically favored as they deliver data enabling water detection independent of solar illumination or cloud cover conditions. However, scale issues play an important role in radar based flood mapping. Depending on the flood related phenomenon under investigation, some sensors might be more suitable than other...

2012
Richard Brown Hubert Chanson

[1] During a major flood event, the inundation of urban environments leads to some complicated flow motion most often associated with significant sediment fluxes. In the present study, a series of field measurements were conducted in an inundated section of the City of Brisbane (Australia) about the peak of a major flood in January 2011. Some experiments were performed to use ADV backscatter am...

Journal: :American journal of epidemiology 2004
Timothy J Wade Sukhminder K Sandhu Deborah Levy Sherline Lee Mark W LeChevallier Louis Katz John M Colford

Severe flooding occurred in the midwestern United States in 2001. Since November 2000, coincidentally, data on gastrointestinal symptoms had been collected for a drinking water intervention study in a community along the Mississippi River that was affected by the flood. After the flood had subsided, the authors asked these subjects (n = 1,110) about their contact with floodwater. The objectives...

2011
M. Reza Ghanbarpour Shokoufeh Salimi Mohsen Mohseni Saravi

In this research a method to calibrate a river hydraulic model (HEC-RAS) using ground-based measurements of an observed flash flood is presented. Applications of the ground truth measurement of flood water depths and flooded areas within a reach of Neka River in Northern of Iran are discussed. The model is calibrated using the Manning's roughness coefficient based on 200-year flood event that t...

2018
Brandon L. Parkes Hannah L. Cloke Florian Pappenberger Jeff Neal David Demeritt

Flood simulation models and hazard maps are only as good as the underlying data against which they are calibrated and tested. However, extreme flood events are by definition rare, so the observational data of flood inundation extent are limited in both quality and quantity. The relative importance of these observational uncertainties has increased now that computing power and accurate lidar sca...

2012
Guangwei Huang

It is widely accepted that sustainable development is the development that meets the needs of the present without compromising the ability of future generations to meet their own needs. However, the question of how to apply this principle to flood management remains insufficiently answered. This article outlines a new strategic concept termed as “Flood Sharing” as a means toward sustainable flo...

2004
Suresh Chandra

Information is provided about the approach and experience in flood management in the Damodar river basin of India. This is achieved through a scheme for the integrated operation of a number of reservoirs on that river and on its tributaries for the purpose of irrigation, hydropower generation and flood protection. Of particular interest is the recent change in policy towards a multi-disciplinar...

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