Sentences with phrase «sea floor by»

A barge - based crane lifted the buoy into the water, where divers secured it to a 230 - ton clump weight on the sea floor by four tethers made of steel cables.

See and explore the sea floor by yourself or with a toddler!

IT MIGHT look like a weird road map, but the picture above shows scars gouged into the sea floor by the undersides of icebergs.

Solitary and highly mobile, it doesn't appear to have much in common with its close cousin the pterobranch, a much smaller marine worm that spends its life in stationary colonies, anchored to the sea floor by rigid tubes.

The large horizontal displacement lifted the sea floor by up to 16 meters on the landward slope in addition to the vertical displacement.

Rather, they show the uplifting of sea floor by plate tektonics over millions of years.

Not exact matches

Some 1,350 metres under the surface and scattered across around 30 kilometres of sea floor, knolls from the landslide were recovered by the team.

Celebrating World Oceans Day by mapping the sea floor.

Milk Room, located on the second floor of the Chicago Athletic Association and operated by Land and Sea Dept., is an exclusive, eight - seat micro bar focusing on classic, spirit - forward cocktails that utilize extremely rare, vintage spirits and hard to find ingredients, curated by LSD beverage director Paul McGee.

Mexico City, with its population of 4,500,000, is a crowded, rambling metropolis that occupies a great part of the Valle Méjico, an open, flat area some 50 miles wide, surrounded by a crown of mountains that extends up to 3,000 feet in the air over the valley floor, itself some 7,500 feet above sea level.

They are pinnacle reefs, built by cyanobacteria on the shallow sea floor 543 million years ago, during a time known as the Ediacaran period.

They note that it is completely buried by sediments from more recent eras, which indicates it was formed long before its surroundings, and that it has no topographic expression on the present sea floor.

The technique used by ChemCam, called laser - induced breakdown spectroscopy, has been used to assess composition of targets in other extreme environments, such as inside nuclear reactors and on the sea floor.

SEALAB by Ben Hellwarth In the 1960s, as the underwater exploits of Jacques Cousteau dazzled the world, U.S. Navy aquanauts lived for weeks in pressurized capsules hundreds of feet under the sea — test runs, Navy researchers hoped, for long - term human habitats on the ocean floor.

The team were able to draw these conclusions by analysing new data from the chemical composition of the fossilised shells of sea surface and seafloor organisms from that period, taken from drilling cores from the ocean floor in the South Atlantic.

But the researchers argue that understanding it is crucial for understanding how life gets by on the sea floor.

The key to finding the oldest wrecks, he says, is locating «relic surfaces» that have escaped being buried by sediment, which flows downhill and covers the deep sea floor.

Farther out, the researchers found furrows left by trawl fishermen, who had scraped the sea floor clean, even in areas where trawling is supposedly forbidden.

In the past, archaeologists have explored the sea floor using divers and, more recently, remotely operated vehicles (ROVs) that are controlled by pilots on ship.

Sound - emitting tags the size of pencil - top erasers can be implanted in fish without ill effect, and their distinctive beeps can be detected by receivers aboard ships or on the sea floor.

The brittlestar Ophiocoma wendtii, a relative of starfish, can scan the sea floor, thanks to light - sensitive cells scattered across its skin, rather than by using eye - like structures, a study suggests.

A new ocean drilling expedition will try to settle the question by drilling into crust where high temperatures are found unusually close to the sea floor, bringing life's thermal limit within reach.

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.»

When the algae dies and sinks to the sea floor, it is consumed by bacteria that guzzle oxygen from the water.

The group used novel sensors that stick like barnacles to the sea floor — allowing them to survive Ivan's fury — to measure wave height by monitoring water pressure.

Pushed by the natural motion of wind and ocean currents — often over long distances — the litter is present in oceans worldwide, as well as in sea floor sediment and coastal sands.

One more unusual behavior may be explained by the hagfish lifestyle: The slime «eels» live on the sea floor, burrowing into the mud and even into dead whale carcasses to scavenge for food.

This waste of fish and effort can be minimised by trawling during the day, when ratfish aren't out scouring the sea floor in search of food.

But in an Opinion paper published June 16 in Trends in Cell Biology, researchers propose that new genomic evidence derived from a deep - sea vent on the ocean floor suggests that the molecular machinery essential to eukaryotic life was probably borrowed, little by little over time, from those simpler ancestors.

It started when the corpses of microbes and algae fell to the sea floor and got sucked into Earth's mantle by diving tectonic plates.

«The water level is also enhanced by a «funneling» effect, which is linked to the depth of the river's floor and the complexity of the Clyde's sea coastline.

Both the discarded houses and fecal pellets sink to the sea floor, but may be eaten by other animals on the way down.

Geologists can create a two - dimensional image, a cross section of the geology under the sea floor, by towing one long cable behind a ship.

The ship also tows a long cable behind it to record the acoustic signals that are reflected back by the sediments and bedrock under the sea floor.

Scientists in Italy are protesting a move by politicians to outlaw the use of high - pressure blasts of air to map the sea floor.

Acorn worms are marine creatures that live on the ocean floor and feed by filtering a steady flow of sea water through slits in the region of their gut between mouth and esophagus.

By 1 April, the team plans to start drilling, quickly churning through 500 meters of limestone that were deposited on the sea floor since the impact.

By refining this method, a research team led by UC Berkeley graduate student Scott French found finger - like channels of low - speed seismic waves flowing about 120 to 220 miles below the sea floor, and stretching out in bands about 700 miles wide and 1,400 miles aparBy refining this method, a research team led by UC Berkeley graduate student Scott French found finger - like channels of low - speed seismic waves flowing about 120 to 220 miles below the sea floor, and stretching out in bands about 700 miles wide and 1,400 miles aparby UC Berkeley graduate student Scott French found finger - like channels of low - speed seismic waves flowing about 120 to 220 miles below the sea floor, and stretching out in bands about 700 miles wide and 1,400 miles apart.

In the Mediterranean, one species of invasive Red Sea foram now coats rocky reefs by the millions, outcompeting native species, and radically changing the native biodiversity of the sea floSea foram now coats rocky reefs by the millions, outcompeting native species, and radically changing the native biodiversity of the sea flosea floor.

By tunneling through the sea floor, scientists say, these creatures kept oxygen concentrations at just the right level to allow animals and other complex life to evolve.

«I have led four previous expeditions to this site, each aided by submersible research technology to explore the sea floor — including a 2012 expedition where we used Sentry to saturate adjacent areas with sonar and photo images,» Van Dover said.

Similarly, the breakdown of the bacterial mats by early burrowing would have opened up the upper sea floor further for life.

Scientists compared the maps to modern charts, finding that more than half of the historical reefs have been replaced by seagrass beds or bare sea floor.

Age is critical because it takes about 200 million years for oxygen isotopes in the seas and crustal rocks to be homogenised by cycling through thermal vents in the ocean floor.

Fishers catch the crabs by baiting tangle nets and spreading them on the sea floor so the crabs» legs get tangled in the mesh.

Canada's mapping project has now been running for 10 years, and Verhoef's group has published numerous papers on the geological features of the Arctic sea floor, but the last piece of the puzzle, a 2000 kilometer - long extension of the Lomonosov Ridge called the Alpha Ridge that runs north of the Yukon coast, remains virtually unexplored by anyone prior to the 6 - week cruise that just launched.

The researchers, which include U.S. teams from NOAA, the U.S. Geological Survey (USGS), and the University of New Hampshire, will be collecting seismic data from this region by bouncing sound blasts off the sea floor to determine its sediment makeup, as well conducting a multibeam analysis that will give them an idea of the shape of the ridge.

By tunneling through the sea floor, these creatures altered our planet's chemistry and kept oxygen concentrations at just the right level to allow animals and other complex life to evolve.

Both the discarded houses and fecal pellets sink to the sea floor, but may be eaten by other animals on the way down (Science Advances, doi.org/cbxw).

Many others, he notes, suggest that samples are too easily contaminated during drilling by microbes that live in overlying sediments, or by inadequate precautions while handling the samples once they've been retrieved from the sea floor.