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Latest Sediment Stories

2014-05-29 16:23:06

Flow Science, Inc. announces the availability of a new release of FLOW-3D, version 11. A major release, FLOW-3D v11 features a state-of-the-art postprocessor, FlowSight(TM), advanced meshing capabilities, a new sediment transport and erosion model and many more numerical solutions designed to help Flow Science's customers continue to innovate, design, and research. SANTA FE, N.M., May 29, 2014 /PRNewswire/ -- The release of FLOW-3D Version 11 features FlowSight, a new advanced...

Mississippi River Sediments Plentiful Enough To Rebuild Shrinking Delta
2014-04-21 12:58:29

Brett Smith for redOrbit.com - Your Universe Online While flood-control measures have kept the Mississippi River from disrupting commerce and transportation along the waterways of southern Louisiana, they have also reduced the amount of wetland-preserving sediment flowing into the river’s delta. However, a new study published in the journal Nature Geoscience reports encouraging news: the amount of sediment contained in the river is more than enough to rebuild the Mississippi’s...

Study Shows Most Of The Sand In Alberta's Oilsands Came From Eastern North America
2014-03-13 15:24:24

University of Calgary University of Calgary-led research is first of its kind, uncovering the origin of oilsands sediment They're called the Alberta oilsands but most of the sand actually came from the Appalachian region on the eastern side of the North American continent, a new University of Calgary-led study shows. The oilsands also include sand from the Canadian Shield in northern and east-central Canada and from the Canadian Rockies in western Canada, the study says. This...

Geophysicist And Mathematicians Team Up To Describe How River Rocks Round
2014-02-13 13:58:08

University of Pennsylvania For centuries, geologists have recognized that the rocks that line riverbeds tend to be smaller and rounder further downstream. But these experts have not agreed on the reason these patterns exist. Abrasion causes rocks to grind down and become rounder as they are transported down the river. Does this grinding reduce the size of rocks significantly, or is it that smaller rocks are simply more easily transported downstream? A new study by the University of...

Economical Solutions For Maintaining Critical Delta Environments
2013-12-10 08:47:46

Woods Hole Oceanographic Institution Millions of people across the world live or depend on deltas for their livelihoods. Formed at the lowest part of a river where its water flow slows and spreads into the sea, deltas are sediment-rich, biodiverse areas, a valuable source of seafood, fertile ground for agriculture, and host to ports important for transportation. At least half of the deltas around the world are so-called “wave dominated deltas” – open to the sea and under the...

2013-12-04 19:18:10

Virginia Institute of Marine Science Left to themselves, coastal wetlands can resist rapid levels of sea-level rise. But humans could be sabotaging some of their best defenses, according to a Nature review paper published Thursday from the Virginia Institute of Marine Science and the Smithsonian Environmental Research Center. The threat of disappearing coastlines has alerted many to the dangers of climate change. Wetlands in particular—with their ability to buffer coastal cities from...

Buried Leaves Reveal Precolonial Eastern Forests
2013-11-14 08:35:58

Penn State Sediment behind milldams in Pennsylvania preserved leaves deposited just before European contact that provide a glimpse of the ancient forests, according to a team of geoscientists, who note that neither the forests nor the streams were what they are today. "Milldams were built from the late 1600s to the late 1800s in Pennsylvania and other parts of the east," said Peter Wilf, professor of geosciences, Penn State. "We can't get information from historic records on what the...

Evidence Shows Dust And Sand Deposits In China Are Controlled By Rivers
2013-10-15 06:56:34

Royal Holloway, University of London New research published today in the journal Quaternary Science Reviews has found the first evidence that large rivers control desert sands and dust in Northern China. Northern China holds some of the world's most significant wind-blown dust deposits, known as loess. The origin of this loess-forming dust and its relationship to sand has previously been the subject of considerable debate. The team of researchers led by Royal Holloway University,...

Deep-sea Core From Okinawa Trough Gives 200,000-year Environmental History Of Continental Shelf
2013-09-26 09:38:37

Science China Press A new research paper shows that a great number of nearby terrigenous pollen and charcoal have been found from the deep-sea sediments of the last 200 kyrs in Okinawa Trough. It is tesitfied that the continental shelf of the East China Sea was exposed and covered with the huge wetland and grassland ecosystems during the the last two glacial periods. They discovered that the variation of terrestrial sources is concordent with global glacial volume and sea-level changes at...


Latest Sediment Reference Libraries

River Delta
2013-04-18 22:36:25

A river delta is a landform that is created at the mouth of a river, where the river flows into an ocean, estuary, lake, sea, or reservoir. These deltas are built from the deposition of the sediment that is carried by the river as the flow exit’s the mouth of the river. Over a long period of time, this deposition constructs the distinctive geographic pattern of a river delta. The creation of a delta is made up of three core forms: the bottomset, topset, and foreset/frontset. Bottomset...

Erosion
2013-04-01 12:48:39

Erosion is the process by which rock and soil are taken from the surface of the Earth by exogenetic processes like wind or the flow of water, and then transported and deposited in another location. While erosion is a natural process, human activities have increased by 10 to 40 times the rate at which erosion is happening globally. Excessive erosion results in problems such as desertification, decreases in agricultural productivity because of land degradation, sedimentation of waterways,...

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Word of the Day
lambent
  • Licking.
  • Hence Running along or over a surface, as if in the act of licking; flowing over or along; lapping or bathing; softly bright; gleaming.
This word comes the Latin 'lambere,' to lick.
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