Sentences with phrase «into ocean sediments»

Not exact matches

Led by Ken Buesseler, a senior scientist and marine chemist at the Woods Hole Oceanographic Institution (WHOI), the team found that a small fraction of contaminated seafloor sediments off Fukushima are moved offshore by typhoons that resuspend radioactive particles in the water, which then travel laterally with southeasterly currents into the Pacific Ocean.

«We know the sediments are of deep sea and terrestrial origin, including those eroded from the high Himalayas and transported thousands of kilometres into the Bay of Bengal and eastern Indian Ocean.

And so a team of marine sediment experts has set up shop on the Nathaniel B. Palmer, hoping to sink great hollow cores deep into the ocean off Antarctica.

«This ocean drilling expedition will for the first time drill scientific boreholes within the sediments entering this subduction zone, including the layer of sediment that eventually develops into the earthquake - generating fault,» Professor Henstock explained.

Previous ocean sediment records suggest that, as the world slipped into the last glacial period, less carbon overall reached the sediments of the Southern Ocean, coinciding with declining atmospheric carbon dioocean sediment records suggest that, as the world slipped into the last glacial period, less carbon overall reached the sediments of the Southern Ocean, coinciding with declining atmospheric carbon dioOcean, coinciding with declining atmospheric carbon dioxide.

That may in turn have caused the planet to heat up enough to melt deposits of methane frozen in sediments on the ocean floor (something, incidentally, that could happen again), discharging even more potent greenhouse gases into the atmosphere and further heating the planet in an escalating feedback loop.

Leaf wax also washes into the ocean and can be preserved in the marine sediments that are laid down year after year.

And, unfortunately, the microbes» speed is limited not by the availability of oil — or even its droplet size, which is why chemical dispersants have been used to break up the oil into microbe - friendly globules — but by the availability of various nutrients, such as nitrogen and phosphorus that wash into the ocean via rivers carrying sediments from the continents.

Dr. Hoffmann: «The isotope Hafnium 176 in contrast to its counterpart Neodymium 143 was transported by means of weathering into the oceans and became part of iron - rich sediments on the sea floor 2,700 million years ago.»

Above that would be sediments, since hardened into rock, that were swept in as the ocean rushed into the vast new depression.

For 2 months in 2013, the JOIDES Resolution, the ship for the International Ocean Discovery Program, drilled into the ocean floor sediments, retrieving cores of mud and rock that were then dOcean Discovery Program, drilled into the ocean floor sediments, retrieving cores of mud and rock that were then docean floor sediments, retrieving cores of mud and rock that were then dated.

They draw down carbon into sea - bed sediments and circulate ocean nutrients.

The shale, named for the town of Eagle Ford, TX, is a geologic remnant of the ancient ocean that covered present day Texas millions of years ago, when the remains of sea life (especially ancient plankton) died and deposited onto the seafloor, were buried by several hundred feet of sediment, eventually turning into the rich source of hydrocarbons we have today.The shale was first tapped in 2008 and now has around 20 active fields good producing over 900 million cubic feet per day of natural gas.

Surprise find The team's actual mission was to survey ocean currents near the Ross Ice Shelf, a slab of ice extending more than 600 miles (970 kilometers) northward from the grounding zone of the West Antarctic Ice Sheet into the Ross Sea, to model the behavior of a drill string, a length of pipe extending to the seafloor which delivers drilling fluids and retrieves sediment samples.

The authors hypothesize the following sequence of events: Around 540 million years ago, the evolution of the first burrowing animals significantly increased the extent to which oxygenated waters came into contact with ocean sediments.

The increased wave action reaches down and stirs up sediments on shallow continental shelves, releasing radium and other chemicals that are carried up to the surface and swept away into the open ocean by currents such as the Transpolar Drift.

More wave action can also cause more coastline erosion, adding more terrestrial sediment into the ocean.

The new findings on Arctic Ocean salinity conditions in the Eocene were calculated in part by comparing ratios of oxygen isotopes locked in ancient shark teeth found in sediments on Banks Island in the Arctic Circle and incorporating the data into a salinity model.

In 2014, they embarked on an ocean voyage to the central equatorial Pacific Ocean, where they drilled into the sediment bed and collected six cocean voyage to the central equatorial Pacific Ocean, where they drilled into the sediment bed and collected six cOcean, where they drilled into the sediment bed and collected six cores.

In most places in the world's oceans, microbes consume all the oxygen less than 10 centimeters into the sediment and below that depth switch to using other compounds for respiration.

Now researchers from MIT and the Woods Hole Oceanographic Institution (WHOI) have devised a simple way to predict a river delta's shape, given two competing factors: its river's force in depositing sediment into the ocean, and ocean waves» strength in pushing that sediment back along the coast.

(Either way, the chance is very small that a carbon atom in the ocean will be incorporated into organic matter or chemically combined with a carbonate cation to form calcium carbonate that will end up sequestered in sediments, where it might remain for hundreds of millions of years.)

Carbonic acid dissociated to form hydrogen ions, which found their way into the structures of weathering minerals, and bicarbonate, which was carried down rivers and streams to be deposited as limestone and other minerals in ocean sediments.

Heavy metals including cadmium and lead are unusually common in sediments from the South China Sea, hinting that run - off from farms was spilling into the ocean 4000 years ago

As the Earth continued to cool from Years 0.1 to 0.3 billion, a torrential rain fell that turned to steam upon hitting the still hot surface, then superheated water, and finally collected into hot or warm seas and oceans above and around cooling crustal rock leaving sediments.

In addition, they are now extending MOSART to simulate how sediment, carbon and other nutrients move from the landscape through the rivers and into the ocean.

Ancient sediments that once resided on a lake bed and the ocean floor show sulfur isotope ratios unlike those found in other samples from the same time, calling into question accepted ideas about when the Earth's atmosphere began to contain oxygen, according to researchers from the U.S., Canada and Japan.

Deltas form as rivers empty their water and sediment into another body of water, such as an ocean, lake, or another river.

The researchers traced the Horn of Africa's climate 200,000 years into the past by analyzing a core of ocean sediment taken in the western end of the Gulf of Aden.

Donnelly's team examined cores of sediment sampled from two of the salt pond's deepest points, searching for layers that were deposited when storms violently washed ocean sand into the 65 - acre waterway.

Donnelly led a team of researchers who pinpointed the hurricane peaks after examining 2,000 years worth of storm - thrown sand, which washed from the ocean into a Massachusetts salt pond, settling as layers of sandy sediment that was sandwiched between layers of ever - accumulating mud.

But I got weathered Into wet sediments Carried to the ocean There the little bits of me Layered with other sediments.

Once sand at the bottom of the ocean, these sediments were buried and the pressure turned the sand into limestone.

People have been turning lakes and ponds into eutrophic green pools with anoxic sediments for decades now; is the ocean starting to reflect this?

[OOOPS; this nonlinear effect puts their «alternative concept» into the realm of Trump administration «alternative facts» — BD] Although the deep ocean could dissolve 70 to 80 % of the expected anthropogenic carbon dioxide emissions and the sediments could neutralize another 15 % it takes some 400 years for the deep ocean to exchange with the surface and thousands more for changes in sedimentary calcium carbonate to equilibrate with the atmosphere.

If there is — say some combination of other elements adding to produce a better structure for the «cage» of water molecules that trap methane, say occurring naturally in pore spaces in sediment or leaf litter washed into the ocean — it ought to be discoverabe.

Now the locations of avaialble proxy data (tree rings, ice cores, ocean sediment records, corals etc.) are not necessarily optimally spread out, but the spatial sampling error is actually quite easy to calculate, and goes into the error bars shown on most reconstructions.

In a 2003 expedition to Indonesia, the researchers collected cores of sediment from the seas where water from the Pacific flows into the Indian Ocean.

Best guess — mostly into the ocean; if we're lucky as sinking dead plankton directly into sediments; if we're not lucky, as increasing acidity, slime and toxic algae blooms.

As sediments form on the floor of the ocean and snow piles up, trapping air bubble into ice, they store information concerning the climate of their day and the factors which affected it.

Seafloor sediments show that during past ice ages, more iron - rich dust blew from chilly, barren landmasses into the oceans, apparently producing more algae in these areas and, presumably, a natural cooling effect.

Ocean floor mud reveals secrets of past European climateSamples of sediment taken from the ocean floor of the North Atlantic Ocean have given researchers an unprecedented insight into the reasons why Europe's climate has changed over the past 3000 yOcean floor mud reveals secrets of past European climateSamples of sediment taken from the ocean floor of the North Atlantic Ocean have given researchers an unprecedented insight into the reasons why Europe's climate has changed over the past 3000 yocean floor of the North Atlantic Ocean have given researchers an unprecedented insight into the reasons why Europe's climate has changed over the past 3000 yOcean have given researchers an unprecedented insight into the reasons why Europe's climate has changed over the past 3000 years.

Thermal energy lifts water out of the ocean and puts it at higher elevations where it has potential energy which is turned into work as water flows through rivers moving sediments around and such.

IANS: Climate change is causing toxic metals trapped in the sediment beds of the Hooghly estuary in the Indian Sunderbans to leach out into the water system due to changes in ocean chemistry, say scientists, warning of potential human health hazards.

The ubiquitous character of certain events further confirms their importance: «the Younger Dryas and a large number of abrupt changes during the last ice age called Dansgaard / Oeschger events (23 abrupt changes into a climate of near - modern warmth and out again, during the last glacial period) have been corroborated in multiple ice cores from Greenland, Antarctica and tropical mountains, marine sediments from the North Atlantic Ocean, the tropical Atlantic, eastern Pacific, and Indian Oceans, and from various records on land.

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.

Warming bottom waters in deeper parts of the ocean, where surface sediment is much colder than freezing and the hydrate stability zone is relatively thick, would not thaw hydrates near the sediment surface, but downward heat diffusion into the sediment column would thin the stability zone from below, causing basal hydrates to decompose, releasing gaseous methane.

The time scale for this mechanism of hydrate thawing is on the order of centuries to millennia, limited by the rate of anthropogenic heat diffusion into the deep ocean and sediment column.

Coupled atmosphere - ocean climate models can be used to simulate the thermal response of the ocean water column to climate change with a moderate degree of uncertainty and the subsequent penetration of heat into the sediment column.

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.