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#seafloor

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Nonilex

Cool

Scientists find ‘#DarkOxygen’ being produced from #metals on the #seafloor

Organisms normally need light to produce #oxygen through #photosynthesis.

Scientists have found evidence that metals naturally occurring on the #ocean floor may be able to produce oxygen — a potential “game changer” they say could change our understanding of the #OriginsOfLife on #Earth.

#Science
washingtonpost.com/science/202

The Washington Post · Scientists find ‘dark oxygen’ being produced from metals on the seafloorBy Annabelle Timsit
Public
Lukas VFN 🇪🇺

Seals Help Scientists Make Discoveries in #Antarctica’s Bellingshausen Sea eos.org/research-spotlights/se

Pathways of Inter-Basin Exchange From the #BellingshausenSea to the #AmundsenSea agupubs.onlinelibrary.wiley.co

"By analyzing hydrographic information gathered by #seals and an undersea glider, researchers found new meltwater currents, as well as a new #seafloor trough... [it] relied on seals to carry temperature and salinity #sensors into remote regions"

photo of a seal with a small scientific instrument on its head
Public
Lukas VFN 🇪🇺

Peeking into the #Ocean’s Microscopic Baby Boom
hakaimagazine.com/videos-visua

"The rapid increase of #phytoplankton marks the biological spring in the ocean—#zooplankton proliferate with the sudden flush of food... While many #animals spend only a brief time in the soup before they settle to the #seafloor or become more mobile, some species live out the rest of their lives as #plankton... It’s astonishing how alien the larval forms of common #SeaCreatures can seem"

Sea snail larva swimming using large wings
Public
Lukas VFN 🇪🇺

Extremely Slow Growth in the Seabed schaechter.asmblog.org/schaech

Slow #Microbial Life in the Seabed annualreviews.org/content/jour

"Those #microbes found kilometers below the #seafloor will have been there 100 million years or more. The deeper they are, the less residual organic matter will be available for their growth and maintenance metabolism. Estimates are that a typical doubling time in these environments is in the order of 1000 years."

sediment corer - a long cylindrical scientific equipment - being lowered from a ship to the sea
Public
Lukas VFN 🇪🇺

Started From the Bottom oceanbites.org/started-from-th

Animal #evolution at the #ocean’s water-air interface cell.com/current-biology/fullt

"#neuston did indeed evolve from ancestors that were substrate-attached but not necessarily to the #seafloor. This means that the neustonic organisms may be derived from #benthic organisms and other organisms that aren’t benthic but still attach to a substrates in the #pelagic zone."

photos of various small oceanic invertebrate animals that live at water surface
Public
💧🌏 Greg Cocks

Continental Shelf Maps Could Add Egypt-Size Area To U.S. Territory – A Two-Decade Mapping Effort Yields Bounty Of Seafloor Data
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science.org/content/article/co <-- shared technical article
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state.gov/the-us-ecs/ <-- US Dept. Of State Extended Continental Shelf (ECS) project page
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#GIS #spatial #mapping #ECS #ExtendedContinentalShelf #remotesensing #hydrospatial #bathymetry #bathy #topobathy #sonar #seafloor #economics #terrority #underseamapping #geology #biology #resources #energy #continental #continentalshelf #governmentinitiative #biodiversity #exploration #habitat #geoscience #minerals #submarine #mudslides #tsunami #sediments #deposition #seafloormapping #marine #ocean #multibeam #3d #sampling
@USGS @NOAA @StateDept

photo, chart and map montage - ECS mapping project
map - ECS - Northern Mariana Islands
map - ECS - Atlantic
photo montage - ECS project areas of exploration incl. ice breaker as a mapping vessel
Public *
Lukas VFN 🇪🇺

Antarctic canyon discovered during wild weather
antarctica.gov.au/news/2024/an

"A massive underwater canyon has been discovered in #Antarctica by acousticians on board icebreaker RSV #Nuyina. The canyon was discovered when wild weather forced resupply work at #CaseyResearchStation to be temporarily suspended... Rather than sit and wait, they decided to use the time to map the #seafloor... What they found was remarkable – a 2100 m-deep canyon, extending more than 46 kilometres off the glacier front."

Map of seafloor near Antarctica. It shows parts of the seafloor mapped in great detail by sonar.
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💧🌏 Greg Cocks

The GEBCO_2023 Grid - A Continuous Terrain Model Of The Global Oceans And Land
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doi.org/10.5285/f98b053b-0cbc- <-- shared open data library access
--
#GIS #spatial #mapping #opendata #world #global #seafloor #GEBCO #NipponFoundation #bathymetry #remotesensing #topobathy #hydrospatial #ocean #grid #raster #survey #topography #elevation #terrainmodel #GlobalMapper #gischat #crowdsourced #seabed2030
GEBCO - General Bathymetric Chart of the Oceans | The Nippon Foundation

map / chart - seafloor mapping - global - GEBCO
graphic / photo - ship collecting bathymetry data
map - global survey routes - GEBCO
Public *
Lukas VFN 🇪🇺

Discovered in the deep: scientists solve mystery of ‘pogo-stick’ seabed holes
theguardian.com/environment/20 by Helen Scales

"During an #expedition in the cold waters of the #BeringSea last summer, a team of scientists spotted neat lines of holes poked into the #seafloor. But they did not know who – or what – had created them. #Scientists on the #German #ResearchVessel #Sonne set about hunting for clues."

Series of holes in the muddy seafloor with a small crustacean in one of them.
Public
Lukas VFN 🇪🇺

Study challenges assumption that higher #oxygen levels led to rise of multicellular organisms in Earth's oceans phys.org/news/2023-07-assumpti

Widespread #seafloor #anoxia during generation of the #Ediacaran Shuram carbon isotope excursion onlinelibrary.wiley.com/doi/10

"there was no major increase in the amount of oxygen when more advanced #fauna began to evolve and dominate Earth. In fact, there was somewhat of a slight decrease"

Artistic reproduction of fauna during cambrian explosion.
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