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News articles about "Sediment"

Engineers purify sea and wastewater in 2.5 minutes

A group of Mexican engineers from the Jhostoblak Corporate created technology to recover and purify either seawater or wastewater from households hotels hospitals commercial and industrial facilities regardless of the content of pollutants and microorganisms ... - Read More

Greenhouse gases unbalanced: How human intervention changes wetlands

Natural wetlands usually emit methane and sequester carbon dioxide Anthropogenic interventions in particular the conversion of wetlands for agriculture result in a significant increase in CO2 emissions which overcompensate potential decreases in methane emission A ... - Read More

No limit to life in sediment of ocean's deadest region

An international team of scientists led by a University of Rhode Island oceanographer has found oxygen and oxygen breathing microbes all the way through the sediment from the seafloor to the igneous basement at seven ... - Read More

Novel monitoring tools tackle chemical surface waters pollution

With the socio economic developments of the last decades new emerging compounds have been produced released and discharged through different point and diffuse sources in European rivers lakes and marine coastal and transitional waters Treated ... - Read More

River algae affecting mercury pollution at Superfund site, study shows

Dartmouth scientists and their colleagues have found that periphyton a community of algae bacteria and other natural material living on submerged surfaces is helping to transform mercury pollution from a Superfund site along a New ... - Read More

Epoch-defining study pinpoints when humans came to dominate planet Earth

The human dominated geological epoch known as the Anthropocene probably began around the year 1610 with an unusual drop in atmospheric carbon dioxide and the irreversible exchange of species between the New and Old Worlds ... - Read More

How rivers creep, flow to shape landscapes over time

Rivers drive the evolution of Earth's surface by eroding and depositing sediment But for nearly a century geologists have puzzled over why theoretical models which use principles of physics to predict patterns of sediment transport ... - Read More

Ancient rocks show life could have flourished on Earth 3.2 billion years ago

A spark from a lightning bolt interstellar dust or a subsea volcano could have triggered the very first life on Earth But what happened next Life can exist without oxygen but without plentiful nitrogen to ... - Read More

Thames study: Rivers can be a major source antibiotic resistance

Rivers and streams could be a major source of antibiotic resistance in the environment The discovery comes following a study on the Thames river by scientists at the University of Warwick's School of Life Sciences ... - Read More

Smothered oceans: Extreme oxygen loss in oceans accompanied past global climate change

Seafloor sediment cores reveal abrupt extensive loss of oxygen in the ocean when ice sheets melted roughly 10 000 17 000 years ago according to a study from the University of California Davis The findings ... - Read More

Scientists search for new ways to deal with U. S. uranium ore processing legacy

Researchers at the Department of Energy's SLAC National Accelerator Laboratory are trying to find out why uranium persists in groundwater at former uranium ore processing sites despite remediation of contaminated surface materials two decades ago ... - Read More

Fossils survive volcanic eruption to tell us about the origin of the Canary Islands

The most recent eruption on the Canary Islands at El Hierro in 2011 produced spectacularly enigmatic white floating rocks that originated from the layers of oceanic sedimentary rock underneath the island An international team of ... - Read More

New sulfate-breathing species discovered beneath ocean crust: Third of Earth's biomass in largely uncharted environment

Two miles below the surface of the ocean researchers have discovered new microbes that breathe sulfate The microbes which have yet to be classified and named exist in massive undersea aquifers networks of channels in ... - Read More

Mercury from gold mines accumulates far downstream

Researchers have determined that the health risks taken on by artisanal small scale gold miners extend far beyond the miners themselves Based on a study of gold mining operations in Peru the miners' practices not ... - Read More

Oil sand mining is not polluting Athabasca Delta, new sampling method reveals

A new study into the pre industrial baseline levels of heavy metals in sediment carried by the Athabasca River shows that emissions from the Alberta oil sands and other human activities have not yet increased ... - Read More

Coral reveals long-term link between Pacific winds, global climate

New research indicates that shifts in Pacific trade winds played a key role in twentieth century climate variation a sign that they may again be influencing global temperatures The study led by scientists at the ... - Read More

NASA Goddard instrument makes first detection of organic matter on Mars

The team responsible for the Sample Analysis at Mars SAM instrument suite on NASA's Curiosity rover has made the first definitive detection of organic molecules at Mars Organic molecules are the building blocks of all ... - Read More

Floodplain evolution in Amazon Basin driven by sediment supply

A new study of the Amazon River basin shows lowland rivers that carry large volumes of sediment meander more across floodplains and create more oxbow lakes than rivers that carry less sediment The findings have ... - Read More

Scientists replicate the tide with two buckets, aquarium tubing, and a pump

Rachel MacTavish is growing salt marsh plants in microcosms that replicate the tide She assembled them in an outdoor greenhouse at the Sapelo Island National Estuarine Research Reserve in Georgia USA with buckets from a ... - Read More

Breathing sand: New measurement technique detects oxygen supply to bottom of North Sea

New analytical methods show for the first time how the permeable sandy sediment at the bottom of the North Sea is supplied with oxygen and which factors determine the exchange Because the metabolic rate is ... - Read More
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