Results 261 to 270 of about 173,448 (288)

Seagrass decline weakens sediment organic carbon stability

Science of The Total Environment
Seagrass meadows are globally recognized as critical natural carbon sinks, commonly known as 'blue carbon'. However, seagrass decline attributed to escalating human activities and climate change, significantly influences their carbon sequestration capacity.
Yuzheng, Ren, Songlin, Liu, Hongxue, Luo, Zhijian, Jiang, Jiening, Liang, Yunchao, Wu, Xiaoping, Huang, Peter I, Macreadie   +7 more
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Metal Distribution and Stability in Constructed Wetland Sediment

Journal of Environmental Quality, 2006
ABSTRACTThe A‐01 wetland treatment system (WTS) is a surface flow wetland planted with giant bulrush [Schoenoplectus californicus (C.A. Mey.) Palla] that is designed to remove Cu and other metals from the A‐01 National Pollution Discharge Elimination System (NPDES) effluent at the Savannah River Site near Aiken, SC. Copper, Zn, and Pb concentrations in
Anna Sophia, Knox, Michael H, Paller, Eric A, Nelson, Winona L, Specht, Nancy V, Halverson, John B, Gladden   +5 more
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Heavy metal stabilization in contaminated road-derived sediments

Science of The Total Environment, 2010
There is increasing interest in the stabilization of heavy metals in road-derived sediments (RDS), to enable environmentally responsible reuse applications and circumvent the need for costly landfill disposal. To reduce the mobility of heavy metals (i.e.
Micha J A, Rijkenberg, Craig V, Depree
openaire   +2 more sources

Leaching behavior of estuarine sediments and cement-stabilized sediments in upland management environments

Waste Management, 2007
Contaminated surficial sediments in major ports and harbors remain a significant economic liability during routine dredging operations. Numerous beneficial uses have been suggested in recent years that promise reduced sediment management costs concomitant with a productive material use.
Gardner, Kevin H., Tsiatsios, Christopher J., Melton, Jeffrey S., Seager, Thomas P.   +3 more
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Stability of free surface sediment flow

Journal of Geophysical Research: Oceans, 1990
Observations of unusual surface level oscillations on the sediment‐laden Yellow River of China, have led to the suggestion that the oscillations arise from a free surface instability peculiar to fluids having the constitutive relation of a Bingham plastic (i.e., possessing a finite yield stress). A model has been proposed in which free surface flows of
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Convective instability in sedimentation: Linear stability analysis

Journal of Geophysical Research: Oceans, 2013
ABSTRACTConvective sedimentation in a stably stratified saltwater is studied using the linear stability analysis. Convective sedimentation is known to occur due to the double‐diffusive mechanism and the settling‐driven mechanism. In this study, a semi‐empirical closure of sediment diffusivity based on the long‐range hydrodynamics effect is adopted. The
Xiao Yu, Tian‐Jian Hsu, S. Balachandar
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Borehole Stability Analysis in Deepwater Shallow Sediments

Journal of Energy Resources Technology, 2014
Deepwater shallow sediment is less-consolidated, with a rock mechanical behavior similar to saturated soil. It is prone to borehole shrinkage and downhole leakage. Assume the deepwater shallow sediments are homogeneous, isotropic, and ideally elastoplastic materials, and formation around the borehole is divided into elastic and plastic zone.
Yan Chuanliang, Deng Jingen, Lai Xiangdong, Li Xiaorong, Feng Yongcun   +4 more
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Day–night variation of cohesive sediment stability

Estuarine, Coastal and Shelf Science, 2005
Surface sediment properties related to cohesive sediment stability were measured over 8 consecutive day- and night-time emersion periods at three upper intertidal sites on a mudflat in August 2003, during the transition from spring to neap tides. Significant differences between day- and night-time critical erosion shear stress (?c) and chlorophyll a ...
Friend, P.L., Lucas, C.H., Rossington, S.K   +2 more
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Mapping and monitoring contaminated-sediment geometry and stability

The Science of The Total Environment, 2001
Environment Canada's National Water Research Institute (NWRI) conducts research on freshwater contaminated sediments, much of which is focused on designated areas of concern in the Great Lakes and their connecting channels. This paper reviews new acoustic and video equipment and procedures developed to map the geometry and stability of the sediments ...
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Evaluating Sediment Stability at Sites with Historic Contamination

Environmental Management, 2002
The stability of cohesive sediment deposits during a rare storm is a critical component in the evaluation of remedial options at a contaminated sediment site. Estimating scour depths during a rare storm, and the resulting contaminant concentrations in the surficial layer of the bed, is necessary for comparing the efficacy of various remedial ...
openaire   +2 more sources