نتایج جستجو برای: sediment flushing

تعداد نتایج: 42925  

Journal: :Environmental toxicology and chemistry 2001
V E Forbes M S Andreassen L Christensen

Previous studies have shown that infaunal deposit feeders may enhance the loss of organic contaminants from sediments. However, the extent to which this occurs as a result of sediment microbial stimulation, porewater flushing, or biotransformation by infauna remains unclear. The purpose of this study was to determine whether the infaunal polychaete Capitella sp. I is able to metabolize the poly...

2017
Maria Azpiroz-Zabala Matthieu J B Cartigny Peter J Talling Daniel R Parsons Esther J Sumner Michael A Clare Stephen M Simmons Cortis Cooper Ed L Pope

Seabed-hugging flows called turbidity currents are the volumetrically most important process transporting sediment across our planet and form its largest sediment accumulations. We seek to understand the internal structure and behavior of turbidity currents by reanalyzing the most detailed direct measurements yet of velocities and densities within oceanic turbidity currents, obtained from weekl...

Journal: :Water 2022

The removal of reservoir silt and the restoration existing capacities through land excavation hydraulic sediment flushing have become necessary. Hydraulic discharge changes flow conditions downstream river channel. In Tamsui River estuary in Taiwan, from Shihmen upstream has potential impacts on morphology navigation channels adjacent coasts. This study employed a validated coastal estuarine pr...

2016
Vahid Noroozi Karbasdehi Sina Dobaradaran Iraj Nabipour Hossein Arfaeinia Roghayeh Mirahmadi Mozhgan Keshtkar

In this data article, by using inductively coupled plasma optical spectrometry (ICP-OES), we aimed to (1) determine the concentration levels of As, Ag, Sr, Sn, Sb, and Mo in the sediments and the shells of Trachycardium lacunosum simultaneously in two separated areas (unpolluted and polluted areas) (2) comparison between the metal contents of sediments in the unpolluted and polluted areas as we...

Journal: :RBRH 2021

ABSTRACT Among several techniques for prevention and mitigation of reservoir sedimentation, bottom outlets arise as a means removing sediment deposited close to the dam. Given reduced removal provided by traditional under pressure flushing conditions, this article proposes new type structure that aims increase in direction parallel dam axis. An experimental installation was employed evaluate it...

Journal: :Water 2023

Coastal Louisiana is currently experiencing high rates of wetland loss and large-scale ecosystem restoration being implemented. One the largest most novel projects a controlled sediment diversion, proposed to rebuild sustain wetlands by diverting sediment- nutrient-rich water from Mississippi River. However, impact this diversion on nutrient budget receiving basin largely unknown. A quality mod...

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