Sediment transport is the suite of physical processes governing the entrainment, movement, and deposition of particulate material (clastic or biogenic) by a transporting medium, typically water, air, or ice. In fluvial and coastal systems, it is controlled by fluid shear stress, turbulence, grain size, density, and bed roughness, and occurs as bedload, suspended load, or wash load. Sediment transport underpins channel and shoreline morphodynamics, stratigraphic architecture, and landscape evolution, and is commonly quantified using transport equations (e.g., Shields parameter–based formulations) and numerical models that couple hydrodynamics with sediment entrainment, advection, diffusion, and deposition.
Namibia has granted environmental clearance for an offshore phosphate mining project that paves the way for the world's first commercial seabed-dredging operation for the mineral, despite opposition from green groups and ...
Environment
Aug 25, 2026
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Sometimes science throws up the unexpected. When a team of researchers set out to model river erosion in Canada's High Arctic, they did not expect the findings to defy common sense.
Earth Sciences
Aug 22, 2026
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Large earthquakes can dramatically reshape mountain landscapes by triggering thousands of landslides and rapidly accelerating erosion. However, the reasons why some mountain regions experience intense, long-lasting erosion ...
Earth Sciences
Aug 18, 2026
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After a heavy rain, rivers often turn brown with sediment, sand, silt and soil washed from the landscape that play a vital role in shaping rivers.
Earth Sciences
Aug 11, 2026
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Every monsoon, India's rivers turn brown. To most of us, that color simply means muddy water. But hidden within it is the material that builds fertile floodplains, creates river islands, nourishes deltas and even shapes coastlines: ...
Earth Sciences
Aug 10, 2026
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The sand used to build cities, roads and other infrastructure is being removed from many rivers faster than nature can replace it, according to a global review led by researchers from Nanyang Technological University, Singapore ...
Environment
Jul 21, 2026
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A study carried out by scientists from Ifremer, IRD, the universities of Western Brittany (UBO) and Bordeaux, CNRS, and the University of Tartu (Estonia) reveals the impact of nickel mining on the coastal ecosystems of New ...
Ecology
Jun 16, 2026
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9
A brown mass—a mixture of water, boulders and fine matter—plows through the landscape. The mountains wash more than a thousand lorryloads of material into the valley on a fairly regular basis, causing damage in excess of ...
Earth Sciences
Jun 10, 2026
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Reservoirs around the world are losing storage capacity at an average rate of 7.3% per decade—disproportionately affecting small reservoirs, which together provide water to billions of people. The data come from a study published ...
Environment
Jun 5, 2026
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64
Researchers at the Swiss Federal Institute for Forest, Snow and Landscape Research (WSL) have, for the first time, been able to record a debris flow over a distance of two kilometers at the Illgraben (VS). The study reveals ...
Earth Sciences
Jun 4, 2026
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