Sedimentation is the physical process by which particulate matter suspended in a fluid medium settles under the influence of gravity or centrifugal forces, leading to spatial segregation based on particle size, density, and shape. In research contexts it underpins techniques such as analytical and preparative centrifugation, sedimentation velocity and equilibrium methods, and sedimentation-based separation in environmental and geological studies. Sedimentation dynamics are described by Stokes’ law in the laminar regime, with deviations at higher Reynolds numbers. It critically influences transport and fate of contaminants, biogeochemical cycling of particulates, formation of stratified deposits, and clarification processes in engineered systems such as water and wastewater treatment.
Researchers from the Nanjing Institute of Geology and Paleontology of the Chinese Academy of Sciences and Columbia University, along with their collaborators, have analyzed sediments from the terrestrial Sangonghe Formation ...
Planetary Sciences
Jul 2, 2025
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40
New research from an international group looking at ancient sediment cores in the North Atlantic has for the first time shown a strong correlation between sediment changes and a marked period of global cooling that occurred ...
Earth Sciences
May 16, 2025
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201
In shallow coastal waters around the world, mud and other fine-grained sediments such as clay and silt form critical blue carbon sinks. Offshore infrastructure such as wind turbines and oil platforms, as well as fishing practices ...
Earth Sciences
May 6, 2025
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26
The history of metal pollution in the city of São Paulo, the largest metropolis in Brazil and the Southern Hemisphere, can be read in the layers of sediment accumulated over the last century.
Earth Sciences
Apr 29, 2025
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95
