Sentences with phrase «ocean sediment studies»

Not exact matches

The foundation of the research involved tracking the changes in ocean circulation in new detail by studying three sediment cores extracted from the seafloor of the Gulf of Mexico in 2010 during a scientific cruise.

The researchers studied temperature measurements over the last 150 years, ice core data from Greenland from the interglacial period 12,000 years ago, for the ice age 120,000 years ago, ice core data from Antarctica, which goes back 800,000 years, as well as data from ocean sediment cores going back 5 million years.

To test that idea, they have studied ancient ocean sediments laid down during the Ediacaran and Cambrian periods, which together ran from about 635 million to 485 million years ago.

The study conclusions are the result of creating a detailed computer model of chemical reactions that took place in the ocean's sediments.

Studies of ocean sediments and lava flows show the Earth has undergone several hundred field reversals, with the most recent confirmed flip occurring about 780,000 years ago.

Bacteria in ocean sediments appear to string together nanowires to connect complementary but spatially separated chemical processes, according to a new study.

Coastal waters play an important role in the carbon cycle by transferring carbon to the open ocean or burying it in wetland soils and ocean sediments, a new study shows.

Not even a massive outpouring of carbon 56 million years ago (recorded in this ocean sediment core as the 25 - centimeter - long red band) comes close, a new study suggests.

Large tsunamis could have carried sediment onto the land and obscured parts of the martian ocean's shoreline, according to a study published today in Scientific Reports.

Other papers in the issue examine how deep sea sediments may affect seismic wave readings, and evaluate how the Cascadia Initiative's data collection from ocean bottom seismometers has improved over the first three years of the study.

To study the movement of vent products, the researchers set up sediment traps and current meters near the hydrothermal vents along the East Pacific Rise, an ocean ridge located about 800 kilometers off the southern coast of Mexico and a mile and a half below sea level.

What is new in this study is it attributes the oxygen stabilisation to biology — the presence or absence of animals stirring up the ocean sediments.»

The study focuses on one such removal process, burial of phosphorus in the organic matter in ocean sediments.

The microplastics found in the zooplankton in this study consisted of small fragments and fibers, but not the deliberately designed microbeads that may sink to the sediments in the ocean.

The team also correlated their findings with other studies of California climate history, and for the first time, cross-referenced these with histories of the Pacific Ocean's temperature taken from marine sediment cores and other sources.

[15] Through study of Pacific Ocean sediments, other researchers have shown that the transition from warm Eocene ocean temperatures to cool Oligocene ocean temperatures took only 300,000 years, [11] which strongly implies that feedbacks and factors other than the ACC were integral to the rapid cooOcean sediments, other researchers have shown that the transition from warm Eocene ocean temperatures to cool Oligocene ocean temperatures took only 300,000 years, [11] which strongly implies that feedbacks and factors other than the ACC were integral to the rapid cooocean temperatures to cool Oligocene ocean temperatures took only 300,000 years, [11] which strongly implies that feedbacks and factors other than the ACC were integral to the rapid cooocean temperatures took only 300,000 years, [11] which strongly implies that feedbacks and factors other than the ACC were integral to the rapid cooling.

WHOI scientists were involved in the recently reported study of rapid draining of glacier meltwater lakes, but WHOI is also studying the transport of carbon sediments by ocean currents.

I should have said that the paleoclimatologists who study sea floor sediments are pretty confident that the high lattitude arctic ocean has not been ice free for many hundreds of thousands of years.

Which lead me to this: http://www.npr.org/2012/07/18/156976147/can-adding-iron-to-oceans-slow-global-warming then to this study: http://www.nature.com/nature/journal/v487/n7407/full/nature11229.html Money shot (last line in abstract):» Thus, iron - fertilized diatom blooms may sequester carbon for timescales of centuries in ocean bottom water and for longer in the sediments.

Foraminifera shells in Schneider's studies were retrieved from the sediment cores from the ocean floor at Vestnesa Ridge north west of Svalbard.

A recent study by Moffitt and colleagues of seafloor sediments from the end of the last Ice Age, around 10,000 to 17,000 years ago, revealed that Pacific Ocean ecosystems from the Arctic to Chile «extensively and abruptly lost oxygen when the planet warmed through deglaciation,» she said.

Scientists in Lamont's geochemistry division study the movements and interactions of substances in air, oceans, groundwater, biological remains, sediments and rocks.

However, instead of digging into the soil, they look for clues about our planet's climate history by studying coral reefs, digging into ocean and lake floor sediment and drilling deeply into glaciers and ice sheets.

In one study, published yesterday (April 11) in the journal Nature, researchers analyzed ocean sediments in a core sampled off the eastern coast of the U.S., from depths where most of the water originated in the North Atlantic's Labrador Sea.

Coastal waters play an important role in the carbon cycle by absorbing carbon into sediments or transferring it to the open ocean, a new study confirms.

In recent years there have been many studies collecting data from ice cores in Greenland, sediments drilled from the ocean floor and from continental lakes, and so forth.

That study, published in the Proceedings of the National Academy of Sciences, was based on ice cores taken from lakes, while the new study is based on sediment cores from the ocean.

Scientists from the Center for Arctic Gas Hydrate (CAGE), Environment and Climate at the Arctic University of Norway, published a study in June 2017, describing over a hundred ocean sediment craters, some 3,000 meters wide and up to 300 meters deep, formed due to explosive eruptions, attributed to destabilizing methane hydrates, following ice - sheet retreat during the last glacial period, around 12,000 years ago, a few centuries after the Bølling - Allerød warming.

By understanding the relationship between the size, composition and distribution of particles found on the bottom with the motion of the water column above, scientists who study long cores of ocean sediment can tell how currents have changed or moved over time.

By studying sediment records of the resulting ocean acidification, researchers can estimate the amount of CO2 responsible for warming.

This is still very early science, and we have some estimates of what may happen to those from modelling studies, from looking at the way in which the heating of the very upper layers of the Arctic Ocean is transferred down through the depth of the ocean - even in these relatively shallow Arctic shelf regions - and then into the sediments that would allow the methane hydrates to destabiOcean is transferred down through the depth of the ocean - even in these relatively shallow Arctic shelf regions - and then into the sediments that would allow the methane hydrates to destabiocean - even in these relatively shallow Arctic shelf regions - and then into the sediments that would allow the methane hydrates to destabilise.