The deep sea or deep layer is the lowest layer in the ocean, existing below the thermocline and above the seabed, at a depth of 1000 fathoms (1800 m) or more. Little or no light penetrates this part of the ocean and most of the organisms that live there rely for subsistence on falling organic matter produced in the photic zone. For this reason scientists once assumed that life would be sparse in the deep ocean but virtually every probe has revealed that, on the contrary, life is abundant in the deep ocean.
In 1960 the Bathyscaphe Trieste descended to the bottom of the Mariana Trench near Guam, at 35,798 feet or 6.77 miles (10,911 meters), the deepest known spot in any ocean. If Mount Everest (8,848 metres) were submerged there, its peak would be more than a mile beneath the surface. The Trieste was retired and for a while the Japanese remote-operated vehicle (ROV) Kaikō was the only vessel capable of reaching this depth. It was lost at sea in 2003. In May and June 2009, the hybrid-ROV (HROV) Nereus returned to the Challenger Deep for a series of three dives to depths exceeding 10900 meters.
An anonymous reader quotes a report from The New York Times ... This extinction event transpired in the world's oceans, and decimated shark populations ... In 2015, Dr ... The reddish clay, extracted from two sediment cores that had been drilled deep into the PacificOcean seafloor, contained fish teeth, shark denticles and other marine microfossils ... Dr ... Dr ... .
"And this could have major implications for the deep ocean carbon cycle." ... Deep under the ocean, microbes are active and poised to eat whatever comes their way (2021, April 28) retrieved 28 April 2021 from https.//phys.org/news/2021-04-deep-ocean-microbes-poised.html.
Deep ocean sea beds could be the answer to providing electric vehicles with the materials needed to make their batteries ... He claims sourcing the metals from the deep ocean will have a lower environmental impact than taking them from land. “We don’t have to drill or blast to find them.
Ocean seismic data came in showing quakes very deep in the ocean trenches, and cores drilled into the deep ocean floor showed these trenches were very hot compared to surrounding ocean floor cores ...Magnum up-swellings in the mid-ocean ridges create new ocean floor, and at deep ocean trenches, old lithosphere sinks back into the Earth.
Beneath the cold, dark depths of the Arctic ocean sit vast reserves of methane ... In the Arctic Ocean today, ice sheets exert pressure on the ground below them ... To reach that record, Dessandier and the team needed to drill a deep core off the western coast of Svalbard, a Norwegian archipelago in the Arctic Ocean.
They wanted to reach the Moho by drilling a deep hole at the bottom of the ocean — a project that journalists compared to a moon shot at the time ...The InternationalOcean Drilling Program , which coordinates deep sea drilling projects all over the world, has a long-term goal of getting a cross section of the Moho.
"The cooling of the deep ocean gave life a boost and allowed it to thrive and diversify," said Dr ... The team used drill-cores of deep-sea mud from all of the world's oceans, recovered by the InternationalOceanDiscovery Program (IODP), to build up a history of plankton communities over millions of years.
The researchers compared pyrite in sediments collected in a borehole drilled in the shelf just off the eastern coast of New Zealand with sediments drilled from the same ocean basin but hundreds of kilometers out into the Pacific.
Directed by William Eubank and written by Brian Duffield and AdamCozad, the action kicks off immediately as the movie follows a crew of oceanic researchers working for a deep-sea drilling company try to get to safety after a mysterious earthquake devastates their deepwater research and drilling facility located at the bottom of the Mariana Trench.
Chang'e-5 probe had finished drilling ... The probe was designed to get samples both from the lunar surface and drill a two-metre-deep hole and gather specimens from an area known as Oceanus Procellarum or ‘Ocean of Storms’ — a vast lava plain — to ensure a diverse collection.
With its boardwalk, arcades and plenty of sand and sunshine, OceanCity, Maryland, offers visitors a lot to see ... Finding energy has long been a controversial topic along the Atlantic Ocean coastline, and opposition to deep water drilling has been especially fierce in tourist spots ... People walk on the boardwalk in Ocean City, Maryland.