نتایج جستجو برای: severn river
تعداد نتایج: 83731 فیلتر نتایج به سال:
Google Earth, a software based on satellite’s images and database of navigation, gains features of high resolution, integrated images, quick update, convenience, simpleness and free cost. Practice of this software shows that it plays an important role in mapping, construction and river research. Based on the fundamental features of Google Earth, this passage makes an introduction to its applica...
Mercury stable isotope abundances were used to trace transport of Hg-impacted river sediment near a coal ash spill at Harriman, Tennessee, USA. δ(202)Hg values for Kingston coal ash released into the Emory River in 2008 are significantly negative (-1.78 ± 0.35‰), whereas sediments of the Clinch River, into which the Emory River flows, are contaminated by an additional Hg source (potentially fro...
To study the growth patterns of Alburnoides namaki in the salt lake, For this purpose a total of 325 specimens were sampled using by By hand trawl net with two centimeters mesh (20 mm distance from node to node) in winter of 2018. Male to female sex ratio in the population studied showed There was no significant difference between males and females in studied areas (X2 Gloushjerd=0.074, X2 Yunj...
Abstract Foundation scour can have a detrimental effect on the performance of bridge piers, inducing significant reduction lateral capacity footing and accumulation permanent settlement rotation. Although hydraulic processes responsible for foundation are nowadays well known, predicting their mechanical consequences is still challenging. Indeed, its impact failure mechanisms developing around h...
Whitewater boaters often choose a river based on their preferences for attributes important for their trip experience. This study explored whether preferences and tradeoffs of whitewater boaters for social, resource, and managerial attributes of riverscapes differ among a high and a low use river in the United States by employing a stated choice approach. River trip scenarios were displayed usi...
The application of GPS in bridge monitoring aims to determine accurately and precisely the response deck towers estimate main characteristics (amplitude modal frequencies). requirement is a high level accuracy availability fixed solutions, which ensure reliable operation result precise estimation bridge's response. However, derived time series can be contaminated by noise, due performance satel...
Rivers can absorb certain amounts of contamination relying on different factors such as: river discharge, the primary conditions of the river, the river depth, discharge and the river viscosity of the offloaded wastes in the river. From parameters of water quality point of view, it is recom-mended to determine some parts of the river which are lower than the standard level in order to find out ...
Clostridium perfringens (CP) and sulphite reducing clostridia (SRC) densities in the Selangor River, Bernam River and Tengi River Canal were examined between April 2007 and January 2008. Water samples were taken from two or three locations along each river, using either depth-integration or grab sampling methods. The downstream sampling site of the Selangor River, Rantau Panjang, reported the h...
The paper presents the state-of-the-art in flood forecasting and simulation applied to a river flood analysis and risk prediction. Different water flow forecasting and river simulation models are analysed. An advanced river flood forecasting and modelling approach developed within the ongoing project INFROM is described. It provides an integrated procedure for river flow forecasting and simulat...
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