The mass balance between sediment being transported and sediment in the bed is described by the Exner equation.

Erosion accelerates as the mountains rise, and great volumes of sediment are shed into the rivers, which carry sediment away from the mountains to be deposited in sedimentary basins in the surrounding lowlands.

Three sheets of sediment have been found on top of the lava that lies below the city and, mixed in with the sediment, archaeologists have found bits of animal bone, pottery shards and plants.

Here the river slows considerably, dropping sediment that might otherwise form a river delta.

As the trees fell, the fine sediment in which the forest grew protected the plants.

From the Yellow River, over 1.6 billion tons of sediment flow each year into the ocean.

Sorting is also a naturally occurring process that results in the concentration of ore or sediment.

In addition, if there are discontinuities between layers in the rock or sediment, seismic waves are reflected.

This resulted in a reduction of the estimated area of oil contaminated sediment to approximately 65 square kilometres.

Generated run off is less erosive and less polluting as crop residues reduce sediment transport into river waters.

Aggradation is the term used in geology for the increase in land elevation due to the deposition of sediment.

Bitumen permeates the dirt at the surface or, where thin layers of compost and sediment intervene, somewhat below basement levels.

The pile of debris resulting from the Bonneville Slide blocked the river until rising water finally washed away the sediment.

Active charcoal carbon filters are most effective at removing chlorine, sediment, volatile organic compounds (VOCs), taste and odor from water.

It doesn't matter what kind of sediment you're using to grind up, whether it's bacteria or any other plants or animals.

The analysis revealed there was only one layer of impact debris in the sediment, which indicated there was only one impact.

Iraq's general contention is that the model predictions of subtidal sediment contamination used by Kuwait to estimate biomass losses are not reliable.

The benthic zone is the ecological region on, in and immediately above the seabed, including the sediment surface and some sub surface layers.

Over time, massive amounts of sediment (sand, soil, and mud) from North and South America filled the gaps between the newly forming islands.

The models used are a Model for the Assessment and Remediation of Sediment ( MARS ) and an Oil Spill Contingency and Response Model ( OSCAR ).

Most live pelagically in open water, although some live as surface films at the water sediment interface (benthic), or even under damp atmospheric conditions.

Aggradation occurs in areas in which the supply of sediment is greater than the amount of material that the system is able to transport.

In those claims, Saudi Arabia estimated the total area of oil contaminated sediment in all the affected sites to be approximately 73 square kilometres.

Prout had said (in 1819) that the pink sediment in urine was due to the presence of ammonium purpurate, but Bird's tests failed to verify this.

In late 2006, Ken MacLeod, a geology professor from the University of Missouri, completed an analysis of sediment below the ocean's surface, bolstering the single impact theory.

Sediment dating in the largest of these (Halvikshulen in Osen, 340 m long) shows that it was formed over a period of at least a million years.

And all the sediment is then put through these screens, and where we go again through it very carefully, looking for small bone fragments, and it's then washed.

While being toxic to marine life, polycyclic aromatic hydrocarbons (PAHs), the components in crude oil, are very difficult to clean up, and last for years in the sediment and marine environment.

That signal was so strong, it could only have been produced by 10 trillion tons of water buried in the sediment, collected over millions and billions of years by the impact of asteroids and comet material.

To stop the contamination from spreading, the local fire department had to add significant quantities of dissolved aluminum chloride, which binds to cadmium and settles on the river bottom. The toxic sediment will eventually be dredged.

Heavy metals (aluminium, chromium, arsenic, and copper) dissolved in the water as a result of coal burning were deemed to be at acceptable levels, but metals in sediment and mercury in larger pike were found to be excessive.

Any arrogant person today cannot ignore the spread of these malicious diseases and fatal cancers in the northern cities as result to the spread of toxins that move through natural elements (wind, air, sediment, and even reach down to the groundwater table).

The most recent cruise added to the samples collected previously so that samples have now been taken at the eastern, central and western zones of the CCZ. The animals or organisms have now been extracted from the sediment for all of the samples collected.

The chalk itself's composed by plankton which has fallen down from the sea surface onto the sea floor, so that 90 percent of the sediment here is skeleton of living stuff, and then you have that millimeter thick red layer, and then you have black rock.

Some fishermen carried out underwater filming at various points along the bay, where they are concerned that there is a large mass of dead or dying fish at depths that vary between 5 and 20 meters and also a large accumulation of sediment associated with industrial activity (fishing).