This study will lead to better predictions of when and where rivers transport sediment, and to an understanding of how that sediment flow is affected by conservation and management efforts, such as the removal of dams," Skog said.
Each of the river's identities -- as the fertile nurturer and the wanton killer -- derives from the same feature: the 1 billion tons of sediment that washes down each year from the Loess Plateau to the Bohai Sea.
These background organisms are a concern because the bottom sediment is resuspended, along with the FIB persisting in the sediment, during high flow conditions.
To get additional insight into these legacy organisms, we collected sediment and water samples in the Squaw Creek watershed near Ames, Iowa, during the first significant precipitation event of the season in spring 2013.
To analyze the efficiency of the Sand Trap Chamber in the Golen Gol Hydropower Project; NETNUS Numerical Simulation alongwith MATLAB and AutoCad Softwares was used to assess the effectiveness of the Sand Trap chamber by computing sedimentation load (tons) longitudinal sedimentation thickness (meters) and finally to propose an operational mode of operation for sediment
flushing by considering two different scenarios i.
The present work is the first attempt to compare P concentration in the surface sediment
and in the overlying water column in Lake Peipsi.
In recent decades, researchers have conducted many studies about using submerged vanes as a structure to control the sediment
entering the intake control, most of which were for straight path intake and few studies have been reported in intake from bends.
Also, the pyrimorph concentration increased gradually in sediment
6 milligrams of alum-calcium carbonate per gram of sediment
suppressed phosphorus release by 92 percent in sandy sediments
and by 72 percent in clay loam and loamy sand sediments
Analyzing the data found in published articles, unusual unexplained deviations in experimental dependences of flow velocities, sediment
concentrations and their fluctuations were observed.
During heavy rain, 24000 km of degraded rivers pour sediment
and pollutants into the Bay.
Beyond the physical impacts of sediment
particles may potentially carry nutrients and pesticides and degrade surface-water quality.
The tracks--some of them tens of meters across and as much as 6 m deep--are now buried by about 10 m of sediment
that has accumulated on the lake floor since the icebergs plowed the region.
During June 2005, we identified the presence of sediment
buried within multi-year channel snowpack of a small river located near Cape Bounty, Melville Island, Nunavut (74[degrees]55' N, 109[degrees]35' W).
ABSTRACT We examined sediment
selection by juvenile sea scallops (Placopecten magellanicus) and their predators, sea stars (Asterias vulgaris) and rock crabs (Cancer irroratus).