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Articles for Seafloor

Deep sea rocks suggest oxygen can be made without photosynthesis
1 month, 3 weeks ago

Deep sea rocks suggest oxygen can be made without photosynthesis

Raw Story  

Oxygen, the molecule that supports intelligent life as we know it, is largely made by plants. They found that this “dark” oxygen production at the seafloor seems to only happen in the presence of mineral concentrates called polymetallic nodules and deposits of metals called metalliferous sediments. The authors also suggested that the amount of oxygen created may fluctuate depending on …

Life Earth Sea Oxygen Deep Nodules
Scientists to Drill 1,000-Meter Hole in Seafloor to Unravel Causes of Tsunamis
1 month, 4 weeks ago

Scientists to Drill 1,000-Meter Hole in Seafloor to Unravel Causes of Tsunamis

India Today  

Scientists will embark on a groundbreaking expedition to the Japan Trench to investigate the causes of tsunamis. The mission will utilize the world's most advanced drilling-equipped science vessel, Chikyu, to explore the Tōhoku-oki earthquake fault zone. The team plans to drill up to a kilometer below the seafloor in water approximately seven kilometers deep, extracting core samples from both sides …

Science Law International Cooperation Tsunamis
Avalanches can grow 100-times larger undersea than on land
3 months, 2 weeks ago

Avalanches can grow 100-times larger undersea than on land

The Hindu  

Underwater avalanches are powerful natural events that happen all the time under the surface of the ocean. My new study of an ancient underwater avalanche challenges our understanding of how underwater avalanches develop and may change the way geologists assess their risk potential. The 2006 Pingtung earthquake in Taiwan triggered underwater avalanches that cut many seafloor cables connecting southeast Asia …

Avalanche Underwater Cables Happen Avalanches Underwater Avalanches Small Land
The deep sea is home to “dark oxygen”
5 months ago

The deep sea is home to “dark oxygen”

The Economist  

Listen to this story. Any oxygen found in regions where photosynthesis is impossible—such as the abyssal seafloor, a pitch-black realm up to 6,000 metres deep—was thought to be surface gas on the move. In a paper published in Nature Geoscience, however, Andrew Sweetman at the Scottish Association for Marine Science and his colleagues reveal that some is, in fact, “dark …

Oxygen Dark Oxygen
Scientists discover ‘dark’ oxygen being produced more than 13,000 feet below the ocean surface
5 months ago

Scientists discover ‘dark’ oxygen being produced more than 13,000 feet below the ocean surface

CNN  

Sign up for CNN’s Wonder Theory science newsletter. NERC Smartex project, SAMS, the Abyssline project, iAtlantic Sampling the seafloor Sweetman first made the unexpected observation that “dark” oxygen was being produced on the seafloor while assessing marine biodiversity in an area that’s earmarked for mining potato-size polymetallic nodules. NHMDeepSea Group/Natural History Museum, UK The pristine ecosystem, 16,400 feet below the …

Ocean Dark Surface Oxygen Nodules Seafloor Produced
‘Nothing is untouched’: DDT found in deep-sea fish raises troubling concerns for food web
7 months, 2 weeks ago

‘Nothing is untouched’: DDT found in deep-sea fish raises troubling concerns for food web

LA Times  

For several years now, one question has held the key to understanding just how much we should worry about the hundreds of tons of DDT that had been dumped off the coast of Los Angeles: How, exactly, has this decades-old pesticide — a toxic chemical spread across the seafloor 3,000 feet underwater — continued to reenter the food web? but …

Food Public Health Team Fish Web Chemicals Chemical
It’s not just toxic chemicals. Radioactive waste was also dumped off Los Angeles coast
10 months ago

It’s not just toxic chemicals. Radioactive waste was also dumped off Los Angeles coast

LA Times  

For decades, a graveyard of corroding barrels has littered the seafloor just off the coast of Los Angeles. Jacob Schmidt, lead author of the study and a PhD candidate in Valentine’s lab, combed through hundreds of pages of old records and tracked down seven lines of evidence indicating that California Salvage, the same company tasked with pouring the DDT waste …

Ocean Team California Marine Los Los Angeles Waste
Massive dumping ground of WWII-era munitions discovered off Los Angeles coast
11 months, 2 weeks ago

Massive dumping ground of WWII-era munitions discovered off Los Angeles coast

LA Times  

It’s not just toxic chemical waste and mysterious barrels that litter the seafloor off the coast of Los Angeles. The U.S. Navy has confirmed that what the Scripps team discovered “are likely a result of World War II-era disposal practices” and noted in a statement that “disposal of munitions at sea at this location was approved at that time to …

Military Team Los Angeles Los Angeles Waste Coast
‘Little ray of hope’: Carbon hot spots discovered near California coast
1 year ago

‘Little ray of hope’: Carbon hot spots discovered near California coast

LA Times  

Westport Headlands, north of Fort Bragg in Mendocino County. Scientists exploring the Northern California Coast have, for the first time, uncovered a treasure trove of carbon compacted on the seafloor — a discovery that may help unravel the ocean’s power to combat climate change. A reserve spanning 6,000 square miles of sanctuary from Point Arena in Mendocino County south to …

Climate Change Climate Ocean California Carbon Study Carbon Dioxide
Underwater mountain twice height of Burj Khalifa discovered off coast of Guatemala
1 year ago

Underwater mountain twice height of Burj Khalifa discovered off coast of Guatemala

The Independent  

The latest headlines from our reporters across the US sent straight to your inbox each weekday Your briefing on the latest headlines from across the US Your briefing on the latest headlines from across the US SIGN UP I would like to be emailed about offers, events and updates from The Independent. Experts from the Schmidt Ocean Institute discovered the …

Research Ocean Guatemala Discovered Burj Khalifa Soi Underwater Mountain
A celebrity-studded L.A. water district has a very big drought idea: Seafloor desalination
1 year, 3 months ago

A celebrity-studded L.A. water district has a very big drought idea: Seafloor desalination

LA Times  

The Las Virgenes Municipal Water District is looking to harvest drinking water from desalination pods placed on the ocean floor. The Las Virgenes Municipal Water District recently partnered with California-based OceanWell to study the feasibility of harvesting drinking water from desalination pods placed on the ocean floor, several miles off the coast of California. The pilot project, which will begin …

Energy Marine Life California Process Marine District Las
‘Golden egg’ found on Alaskan seafloor baffles researchers
1 year, 3 months ago

‘Golden egg’ found on Alaskan seafloor baffles researchers

Hindustan Times  

A mysterious object found deep on the seafloor has created a buzz. Researchers from NOAA Ocean Exploration found the yellowish object while diving on a small seamount in the Gulf of Alaska. Initially referred to as ‘yellow hat’, the still-unidentified object is now being dubbed as ‘golden egg’ or ‘golden orb’. While we were able to collect the 'golden orb' …

Golden Researchers Egg Noaa Object Noaa Ocean Exploration Ocean Exploration
How fast can ice sheets retreat?
1 year, 8 months ago

How fast can ice sheets retreat?

The Hindu  

Ice sheets can retreat up to 600 meters a day during periods of climate warming, 20 times faster than the highest rate of retreat previously measured. An international team of researchers used high-resolution imagery of the seafloor to reveal just how quickly a former ice sheet that extended from Norway retreated at the end of the last Ice Age, about …

Ice Sheet Retreat
Scientists uncover startling concentrations of pure DDT along seafloor off L.A. coast
1 year, 9 months ago

Scientists uncover startling concentrations of pure DDT along seafloor off L.A. coast

LA Times  

First it was the eerie images of barrels leaking on the seafloor not far from Catalina Island. “We still see original DDT on the seafloor from 50, 60, 70 years ago, which tells us that it’s not breaking down the way that once thought it should,” said UC Santa Barbara scientist David Valentine, who shared these preliminary findings Thursday during …

Research Ocean California Coast Valentine Scientists Catalina
Marine heatwaves are sweeping the seafloor around North America
1 year, 9 months ago

Marine heatwaves are sweeping the seafloor around North America

The Hindu  

Heatwaves unfolding on the bottom of the ocean can be more intense and last longer than those on the sea surface, new research suggests, but such extremes in the deep ocean are often overlooked. A team of scientists with the U.S. National Oceanic and Atmospheric Administration have conducted the first assessment of marine heatwaves along North America's continental shelves. "We …

Ocean Marine Marine Heatwaves Surface Heatwaves
The unknown giants of the deep oceans
1 year, 10 months ago

The unknown giants of the deep oceans

BBC  

The unknown giants of the deep oceans Emmanuel Lafont The oceans are thought to hold about 2 million species – so far we know less than 250,000 of them Expeditions to the depths of the oceans have revealed strange dark worlds bristling with species new to science – now the race is on to discover them. The deep sea is …

Animals Ocean Light Mining Species New Species Know
Humans can dive deeper into the world’s oceans than ever before with Alvin
2 years, 2 months ago

Humans can dive deeper into the world’s oceans than ever before with Alvin

CNN  

Sign up for CNN’s Wonder Theory science newsletter. Marley Parker/Woods Hole Oceanographic Institution Hydrothermal vents form where rising magma beneath the seafloor creates underwater mountain ranges called ocean ridges. It’s the third increase in depth for Alvin since the submersible was commissioned, according to Andrew Bowen, principal engineer at Woods Hole Oceanographic Institution’s Applied Ocean Physics & Engineering. Marley Parker/Woods …

Ocean Hole Puerto Rico Woods Deep Michel North American
Seafloor images shed new light on Thwaites Glacier retreat
2 years, 3 months ago

Seafloor images shed new light on Thwaites Glacier retreat

The Independent  

Sign up to the Independent Climate email for the latest advice on saving the planet Get our free Climate email Get our free Climate email SIGN UP I would like to be emailed about offers, events and updates from The Independent. Robert Larter, British Antarctic Survey However, the study indicates the glacier could see big changes over small timescales in …

Ocean Ice Marine Glacier Scientists Ran Thwaites
What is the effecting of thawing permafrost on seafloor?
2 years, 8 months ago

What is the effecting of thawing permafrost on seafloor?

The Hindu  

A new study from Monterey Bay Aquarium Research Institute researchers and their collaborators have document how the thawing of permafrost, submerged underwater at the edge of the Arctic Ocean, is affecting the seafloor. Numerous peer-reviewed studies show that thawing permafrost creates unstable land which negatively impacts important Arctic infrastructure, such as roads, train tracks, buildings, and airports. Using advanced underwater …

Permafrost Mbari
The world is set to debate seabed mining regulations, but the U.S. will be on the outside looking in
2 years, 9 months ago

The world is set to debate seabed mining regulations, but the U.S. will be on the outside looking in

Politico  

The U.S. is in jeopardy of being left at the starting gate because it has not ratified the U.N. Convention on the Law of the Sea, a requirement to be a member of the ISA. “There’s certainly a risk in getting left behind in the negotiations,” said Andrew Friedman, an associate manager at Pew Charitable Trusts focused on seabed mining. …

China Companies Mining Minerals State Need Isa
Holes the size of city blocks are forming in the Arctic seafloor
2 years, 9 months ago

Holes the size of city blocks are forming in the Arctic seafloor

CNN  

Sign up for CNN’s Wonder Theory science newsletter. CNN — Marine scientists have discovered deep sinkholes – one larger than a city block of six-story buildings – and ice-filled hills that have formed “extraordinarily” rapidly on a remote part of the Arctic seafloor. Mapping of Canada’s Beaufort Sea, using a remotely operated underwater vehicle and ship-mounted sonar, revealed the dramatic …

Climate Changes Feet Study Holes Permafrost Arctic
Stunning DDT dump site off L.A. coast much bigger than scientists expected
3 years, 7 months ago

Stunning DDT dump site off L.A. coast much bigger than scientists expected

LA Times  

When the research vessel Sally Ride set sail for Santa Catalina Island to map an underwater graveyard of DDT waste barrels, its crew had high hopes of documenting for the first time just how many corroded containers littered the seafloor off the coast of Los Angeles. “I was pretty shocked that it just kept extending as far as it did,” …

Data Ocean Scientists Sea Lions Catalina Noaa Scripps
Microbes on Earth's Seafloor Can Help Understand Secrets of Life Forms on Mars: Study
3 years, 9 months ago

Microbes on Earth's Seafloor Can Help Understand Secrets of Life Forms on Mars: Study

News 18  

The ocean floor among its many secrets also contains many organisms about which marine biologists and researchers are learning something new daily. A group of scientists from the University of Rhode Island’s Graduate School of Oceanography have found that the microbes rely on a peculiar food source, hydrogen produced from radiolysis of water. The researchers found that the seafloor is …

Research Life Water Mars Process Study Microbes
Scientists Solve the Mystery of How Methane Escapes through Ice Caps from Deep Sea-beds
4 years ago

Scientists Solve the Mystery of How Methane Escapes through Ice Caps from Deep Sea-beds

News 18  

Methane is considered as one of the cleanest fossil fuels to burn, however, when released in the atmosphere, it becomes one of the worst greenhouse gases writing the doom of our planet through global warming. Global observations have shown robust methane gas columns as they bubble upwards from their frozen grave called methane hydrates. Lead author Xiaojing Fu observed photos …

Gas Methane Sea Scientists Solve