Sentences with phrase «amount of sediment»

Even a small amount of sediment can create a blockage in your home's plumbing.

Foley: The main difference between small and large dams is likely to be the amount of sediment that is eroded after dam removal.

A small amount of sediment on the bottom is normal.

Flooding not only raises river levels, but also increases the amount of sediment they carry.

They also suggest that the amount of sediment carried to the mouth of the Amazon each year and then dumped offshore should increase over time — something actually seen in sediment cores drilled from that area.

As a result, the amount of sediment washing into the sea near the development had increased fivefold.

The models predicted erosion would increase by at least 100 percent in a quarter of western U.S. watersheds between the start of the 21st century and 2050, a surprisingly large increase in the amount of sediment to enter local streams, according to Sankey.

The amount of sediment entering creeks after fires increased with the proportion of the watershed that was burned and if the area burned repeatedly, said Sankey.

The Town of Paris project consists of improvements to box culverts by filling in the pools with heavy stone and stabilize the banks of the creeks in turn decreasing the amount of sediment material that is transported to the lower reaches of the Sauquoit Creek.

The small time increments scientists were able to capture in the cores are due to the large amounts of sediment that empty into the Gulf from rivers in Mexico and North America.

«So we knew that in the final period of the recent Ice Age, between 30,000 and 15,000 years ago, large amounts of sediment were deposited in the region in a relatively short period of time,» explains Dr. Karstens.

The new measurements in this research were made with cores that showed the results of massive amounts of sediments released by subsea landslides during a subduction zone earthquake — a catastrophic event beneath the sea as well as on land.

The storm that swept across the Rockies in September 2013 unleashed huge amounts of sediment downstream, doing the work of a century of erosion.

Using satellite images from the European Space Agency's Copernicus program, the Austrian researchers have shown how, similar to the findings in Canada, thawing permafrost has unleashed huge amounts of sediments below receding glaciers.

Our liquid extracts will frequently have varying amounts of sediment resting at the bottom of the bottle.

It is alos likely to be inaccurate if the urine contains large amounts of sediment.

The restoration crew works to restore the hillside alluvial fan that was previously depositing excessive amounts of sediment in Redwood Creek below.

Using satellite images from the European Space Agency's Copernicus program, the Austrian researchers have shown how, similar to the findings in Canada, thawing permafrost has unleashed huge amounts of sediments below receding glaciers.

The Brahmaputra moves enormous amounts of sediment, while making and breaking river banks and thousands of islands.

Not exact matches

The amount of debris buried in the beach sediment was examined following the quadrat design developed by Kusui and Noda (25).

This clarification period, usually 1 - 2 weeks will help reduce the amount of yeast sediment that winds up in your keg.

In fact, this nearly exact balancing between the supply of sediment and the amount of subsidence is probably a rare contingency»

But we have seen that a thick formation, fossiliferous throughout its entire thickness, can acc.umulate only during a period of subsidence; and to keep the depth approximately the same, which is necessary that the same marine species may live on the same space, the supply of sediment must nearly counterbalance the amount of subsidence.

I find that the carob powder does not completely dissolve and leaves a large amount of «sediment» in the bottom of my cup.

Keep in mind, this is a homebrew, you may find a small amount of yeast sediment at the bottom of your bottle.

During an impact, clay could have trapped substantial amounts of the organic molecules formed in the same event, and then settled as marine sediment, the researchers say.

Instead, as the flume tilted upward in these experiments, a proportionately greater amount of water was needed to initiate sediment motion.

The metals» solubility depends strongly on the amount of oxygen present, so the amount and type of those metals in ancient sedimentary rocks reflect how much oxygen was in the water long ago, when the sediments formed.

Walter mapped likely methane deposits across the region; quantified how much methane, formed when permafrost melts, is bubbling out of current lakes; and compared that with the amount emitted from methane - laden sediments taken from ancient frozen lakes.

Colman noted that in his previous in vitro studies of sediment he saw no effect on the amount of microbes present even though he used 1,250 milligrams of nano - silver per kilogram of sediment.

Finally, sediments show a sudden increase in the amount of nickel deposited at exactly this time.

After a spate of dam - building, the total volume of sediment in the river dropped — but the amount of coarse sand has remained the same.

Eventually, sometime about 2.5 billion years ago, the weight of the sediments caused the lake's icy ceiling to collapse, sending immense amounts of water to the surface, the researchers propose online this month in Icarus.

That could explain two other anomalies from the era's geologic record, Lenton says: the large amounts of organic - rich shale that were deposited as nearshore sediments and the unusually high proportion of carbon - 13 isotopes in the rocks.

[Perry:] «If you take the parrot fish out of these systems you would basically be shutting down a very significant amount of the sort of supply chain for island - building sediment.»

Calcium carbonate has great scientific relevance in biomineralization and geosciences, forming enormous scales of biological (reefs and ocean sediments) and geological origin, which bind a huge amount of CO2 and affect the chemistry of ocean water (1) and, with it, Earth's atmosphere and climate.

They then counted the number of individuals and species in those samples and measured the amount of carbon in the sediment.

They measured the amounts of carbon isotopes in plant - leaf wax found in the sediments and from that determined what types of plants had lived in the two areas during the past 27,000 years.

This process can then move large amounts of sand and other sediment, which effectively «levitates» on the boiling water.

To understand why the long - spined urchins have not returned to the reef more than 30 years later, Scripps scientists Katie Cramer and Dick Norris analyzed the amount of fossilized urchin spines that accumulated in reef sediment layers over the past 3,000 years to paint a picture of life on the reef before it was altered from the disease outbreak and human activities such as fishing and pollution.

Finds like that, along with sediment cores and ice cores that show how the amount of methane in the atmosphere and ocean has fluctuated dramatically in the past, have led to a slew of «methane burp» theories.

The researchers sorted the fossils out of the reef sediment to track the amount of long - spined and other urchin species over time.

Among the world's rivers, the Mississippi River discharges the seventh largest amount of water and sediment.

In addition, the total amount of cesium retained more than 3 feet deep in the sands is higher than what is found in sediments on the seafloor offshore of the beaches.

«Sediment composition and the amount of hydrocarbons [petroleum and natural gas] available within these sediments help us understand whether or not an LIP can trigger a mass extinction,» says Burgess, adding that his team's model may apply to other extinction events coinciding with LIPs.

Dr Stephen Grimes of Plymouth University, who initiated the research project, highlighted the climate changes that must have caused this increase in sediment erosion and transport — «We have climate model simulations of the effect of warming on rainfall during the PETM event, and they show some changes in the average amounts of rainfall, but the largest change is how this rainfall is packaged up — it's concentrated in more rapid, extreme events — larger and bigger storms.»

When these worms began to mix up the ocean floor's sediments (a process known as bioturbation), their activity came to significantly influence the ocean's phosphorus cycle and as a result, the amount of oxygen in Earth's atmosphere.

Look at these distances: It requires almost a thousand kilometers of seafloor spreading to record the same amount of time that you find in 150 meters of mountain sediment, so the earth is running two magnetic tape recorders.

Regular consumption of water that contains large amounts of inorganic arsenic, a colorless and odorless element leached from rocks and sediments, leads to a range of harmful health effects.

Finally, they used a seafloor - crawling robot, the Benthic Rover, to measure the amount of oxygen being consumed by animals and microbes in the sediment.