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

created May 21, 2012 | popularity 3.7 / 5 (3) | comments 0 | with audio podcast

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 ...

Biology / Cell & Microbiology

created Apr 30, 2012 | popularity 4.7 / 5 (7) | comments 3 | with audio podcast report

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

created Jan 05, 2011 | popularity 4.5 / 5 (11) | comments 6 | with audio podcast

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

created Feb 11, 2010 | popularity 5 / 5 (3) | comments 0 | with audio podcast

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

created Sep 07, 2011 | popularity 4.3 / 5 (4) | comments 1 | with audio podcast

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.

Space & Earth / Environment

created Dec 22, 2011 | popularity 4.3 / 5 (6) | comments 10 | with audio podcast

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

created Feb 22, 2011 | popularity 4.8 / 5 (4) | comments 3 | with audio podcast

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

created Jan 10, 2011 | popularity 5 / 5 (3) | comments 0 | with audio podcast

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

created Feb 05, 2010 | popularity 3.7 / 5 (3) | comments 0 | with audio podcast

Human Impacts and Environmental Factors Are Changing the Northwest Atlantic Ecosystem

(PhysOrg.com) -- Fish in U.S. waters from Cape Hatteras to the Canadian border have moved away from their traditional, long-time habitats over the past four decades because of fundamental changes in the regional ...

Space & Earth / Environment

created Aug 31, 2009 | popularity 3.4 / 5 (5) | comments 0

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

created Jun 21, 2010 | popularity 4.6 / 5 (9) | comments 1 | with audio podcast

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 ...

Chemistry / Biochemistry

created Apr 12, 2012 | popularity not rated yet | comments 0

Is the Pacific Ocean's chemistry killing sea life?

The collapse began rather unspectacularly. In 2005, when most of the millions of Pacific oysters in this tree-lined estuary failed to reproduce, Washington's shellfish growers largely shrugged it off.

Space & Earth / Environment

created Jun 21, 2009 | popularity 4.6 / 5 (13) | comments 8

Global warming tactic cools climate but won’t help corals, say researchers

(PhysOrg.com) -- “Geoengineering” experiments proposed to reduce global warming by blocking sunlight with atmosphere-injected particles may cool the world but still leave carbon dioxide levels dangerously high, Stanford scientists ...

Space & Earth / Earth Sciences

created Jul 03, 2009 | popularity 2.5 / 5 (8) | comments 6

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 ...

Chemistry / Materials Science

created Dec 06, 2011 | popularity 4.5 / 5 (2) | comments 0

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.