Sentences with phrase «seawater chemistry»
Seawater chemistry refers to the composition and properties of saltwater found in oceans, seas, and other bodies of water. It includes the study of elements, compounds, and processes in the water, such as the levels of salts, pH, temperature, and dissolved gases. Understanding seawater chemistry helps scientists learn about the health of marine ecosystems and how they may be affected by factors like pollution and climate change. Full definition
Although the absorption of atmospheric CO2 by the ocean helps limit climate warming, it also changes seawater chemistry and causes ocean acidification.
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Finding a way to reverse climate change is the foremost challenge of our time and the first step is collecting ocean data in order to help us understand how seawater chemistry is changing.
She studies the evolution of climate and seawater chemistry through time.
This change in seawater chemistry alters the way sound moves through the ocean, allowing it to propagate farther, particularly for sounds two and a half octaves above «middle C,» said researcher Keith Hester of the Monterey Bay Aquarium Research Institute in California.
They once again altered seawater chemistry of reef flats surrounding One Tree Island off the coast of Australia.
Washington, DC — A team of scientists led by Carnegie's Rebecca Albright and Ken Caldeira performed the first - ever experiment that manipulated seawater chemistry in a natural coral reef community in order to determine the effect that excess carbon dioxide released by human activity is having on coral reefs.
By studying the chemical composition of fossilized foraminifera, tiny single - celled animals that lived in shallow tropical waters, a team of researchers generated precise estimates of tropical sea surface temperatures and seawater chemistry during the Eocene Epoch, 56 - 34 million years ago.
«In the past 200 years, we have manipulated seawater chemistry at a rate that has not occurred for at least 20 million years,» says oceanographer Jean - Pierre Gattuso, coordinator of the European Project on Ocean Acidification (EPOCA) and a lead scientist on the Spitsbergen experiments.
«The changing seawater chemistry means that those threads are going to get weaker.
Oceanographic data and water samples also were collected daily to evaluate seawater chemistry, patterns of water circulation and potential connectivity between Cuban reefs and those in the U.S.
Scientists aboard the icebreaker Healy measured seawater chemistry across the Arctic Ocean and found that levels of radium - 228 have almost doubled over the last decade in the middle of the ocean.
Because seawater chemistry is partly controlled by temperature, sediments and fossil shells retain a signature of the ambient temperatures under which they formed.
Roger Revelle, seen here studying seawater chemistry, ca. 1936, and as a leading adminstrator as well as scientist, ca. 1958.
Scientists connect seawater chemistry with climate change and evolution TORONTO, ON — Humans get most of the blame for climate change, with little attention paid to the contribution of other natural forces.
«Ocean acidification» (OA), a change in seawater chemistry driven by increased uptake of atmospheric CO2 by the oceans, has probably been the most - studied single topic in marine science in recent times.
In that work, they made a coral reef community's seawater chemistry more alkaline — essentially giving the reef an antacid — and demonstrated that the coral's ability to construct its architecture was improved under these conditions.
Now, marine scientists are wondering whether a dramatic, global shift in seawater chemistry could make some deep - sea hermit crabs bolder — or rather, more foolhardy.
Much of the research on ocean acidification to date has focused on the effect changing seawater chemistry has on the calcium carbonate shells of shellfish.
They also lasered a small hole in each specimen to measure the amount of magnesium and calcium that vaporized, revealing the seawater chemistry.
«We know with certainty what's going to happen to the seawater chemistry,» says Victoria Fabry, a biological oceanographer at California State University at San Marcos.
All of these, as well as CO2 sequestration as is (just taking CO2 and burying it in old oil reservoirs, aquifers, etc.), would be attempts to grasp the «big control knob» (see Hank Roberts» 670), and in such a way as to have the same or nearly the same (depending on seawater chemistry and how carbonate dissolution works in buffering pH relative to sequestering CO2 from the atmosphere) effect as reducing anthropogenic CO2 emissions.
«Those results,» Fabry says, «suggest that for subpolar and polar pteropods to survive, they will need either to adapt to the expected changes in seawater chemistry or to move to warmer, lower - latitude surface waters.»
It was the first time that seawater chemistry was experimentally manipulated in a natural coral reef environment.
This is because ocean acidification represents a series of changes in seawater chemistry, with each alteration representing a potential driver of change [10].