News tagged with ocean chemistry
Toxic mercury, accumulating in the Arctic, springs from a hidden source
(Phys.org) -- Environmental scientists at Harvard have discovered that the Arctic accumulation of mercury, a toxic element, is caused by both atmospheric forces and the flow of circumpolar rivers that carry ...
Space & Earth / Earth Sciences
May 21, 2012 |
3.7 / 5 (3) |
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Scientists discover new kind of blue-green algae with carbonates in their cells
(Phys.org) -- Researchers studying organisms in Mexico's Lake Alchichica have discovered a new species of cyanobacterium that unlike any other ever found, has bony, intracellular carbonates. Up till now, specimens with such ...
Pacific Ocean natural products isolated from marine mollusks, sponges can reverse multidrug resistance in cancer cells
(Phys.org) -- Many marine natural products show anticancer activity, but some can reverse multidrug resistance in cancer cells. A new investigation by Robert J. Capon of the University of Queensland correlates ...
Apr 12, 2012 |
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Comprehensive study makes key findings of ocean pH variations
A group of 19 scientists from five research organizations have conducted the broadest field study of ocean acidification to date using sensors developed at Scripps Institution of Oceanography, UC San Diego.
Dec 22, 2011 |
4.3 / 5 (6) |
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It's elemental: Paper celebrates discovery of iodine
(PhysOrg.com) -- It's not every day that an element gets to celebrate a bicentennial, and a University of Delaware professor is pleased to have been invited to the "birthday party" for iodine, which was discovered ...
Dec 06, 2011 |
4.5 / 5 (2) |
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Evidence for a persistently iron-rich ocean changes views on Earth's early history
Over the last half a billion years, the ocean has mostly been full of oxygen and teeming with animal life. But earlier, before animals had evolved, oxygen was harder to come by. Now a new study led by researchers ...
Space & Earth / Earth Sciences
Sep 07, 2011 |
4.3 / 5 (4) |
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Study assesses nations' vulnerabilities to reduced mollusk harvests from ocean acidification
Changes in ocean chemistry due to increased carbon dioxide (CO2) emissions are expected to damage shellfish populations around the world, but some nations will feel the impacts much sooner and more intensely than others, ac ...
Aug 02, 2011 |
4.7 / 5 (3) |
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Lab puts sea life to an acid test
The baby crabs look like lint specs swirling in glass jars. The 3-day-old geoducks are too small to even see.
Space & Earth / Earth Sciences
Apr 17, 2011 |
5 / 5 (3) |
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Fish provide missing piece in the marine sediment jigsaw
Research published today reveals the previously unidentified role that fish play in the production of sediments in the world's oceans, and specifically of the carbonate sediments that contain critical records of changes in ...
Space & Earth / Earth Sciences
Feb 22, 2011 |
4.8 / 5 (4) |
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Oxygen-free early oceans likely delayed rise of life on planet
Geologists at the University of California, Riverside have found chemical evidence in 2.6-billion-year-old rocks that indicates that Earth's ancient oceans were oxygen-free and, surprisingly, contained abundant hydrogen sulfide ...
Space & Earth / Earth Sciences
Jan 10, 2011 |
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Earth is getting dustier, model suggests
(PhysOrg.com) -- If the house seems dustier than it used to be, it may not be a reflection on your housekeeping skills. The amount of dust in the Earth's atmosphere has doubled over the last century, according ...
Space & Earth / Earth Sciences
Jan 05, 2011 |
4.5 / 5 (11) |
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Oceans stem the tide of evolution
(PhysOrg.com) -- Toxic seas may have been responsible for delaying the evolution of life on Earth by 1 billion years, experts at Newcastle University have revealed.
Space & Earth / Earth Sciences
Jun 21, 2010 |
4.6 / 5 (9) |
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Scientist Takes Comprehensive Look at Human Impacts on Ocean Chemistry
(PhysOrg.com) -- Numerous studies are documenting the growing effects of climate change, carbon dioxide, pollution and other human-related phenomena on the world’s oceans. But most of those have studied single, ...
Jun 17, 2010 |
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New picture of ancient ocean chemistry argues for chemically layered water
A research team led by biogeochemists at the University of California, Riverside has developed a detailed and dynamic three-dimensional model of Earth's early ocean chemistry that can significantly advance ...
Space & Earth / Earth Sciences
Feb 11, 2010 |
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Carbonate veins reveal chemistry of ancient seawater
The chemical composition of our oceans is not constant but has varied significantly over geological time. In a study published this week in Science, researchers describe a novel method for reconstructing past o ...
Space & Earth / Earth Sciences
Feb 05, 2010 |
3.7 / 5 (3) |
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Ocean chemistry
Ocean chemisty, also known as marine chemistry, is influenced by turbidity currents, sediments, PH levels, atmoshperic constituents, metamorphic activity, and ecology. The field of chemical oceanography studies the chemistry of marine environments including the influences of different variables.
The impact of increased carbon dioxide levels in the Earth's atmosphere on ocean chemistry from anthropogenic factors is an important area of study related to global warming and climate change. Researchers are studying how anthropogenic factors will impact and influence ocean chemistry and the related ecology of marine environments over the short and long term.
A planetary scientist using data from the Cassini spacecraft has been researching the marine chemistry of Saturn's moon Enceladus using geochemical models to look at changes through time. The presece of salts may indicate a liquid ocean within the moon, raising the possiblity of the existence of life, "or at least for the chemical precursors for organic life".
Scientists have expressed concern over increased carbon dioxide levels being absorbed into the oceans and causing acidification. The phenomenon has been implicated by scientists studying declining oyster populations on the pacific coast of the United States. One proposal suggests dumping massive amounts of lime, a base, to reverse the acidification and "increase the sea's ability to absorb carbon dioxide from the atmosphere".
Special marine environments are created around Black smokers and Cold seeps.
For more information about Ocean chemistry, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.