Technologies shine spotlight on climate role of undersea canyons

Unprecedented high-resolution data from undersea canyons off Vancouver Island's west coast is bringing new understanding of the importance of these canyons as rapid-transit corridors for carrying carbon from the ocean surface ...

Radioactivity lingers from 1946-1958 nuclear bomb tests

Scientists have found lingering radioactivity in the lagoons of remote Marshall Island atolls in the Pacific Ocean where the United States conducted 66 nuclear weapons tests in the 1940s and 1950s.

How much carbon can polar seafloor ecosystems store?

One of the best-known impacts of climate change is the loss of sea ice in the Arctic, but also in parts of the Antarctic: the poles are increasingly turning from white to blue. However, in the shallow seas near continental ...

Natural gas hydrate in the foraminifera

Natural gas hydrates are clathrate hydrates that consist of water molecules and natural gas molecules (major constituent: methane). They are mainly distributed along continental slopes of the oceans or permafrost regions ...

New digital seafloor map provides answers and more questions

Ocean sediments cover 70% of our planet's surface, forming the substrate for the largest ecosystem on Earth and its largest carbon reservoir—but the most recent map of seafloor geology was drawn by hand more than 40 years ...

R.I. nitrogen cycle differs in bay and sound

A new study reports that anammox, a key process in the nitrogen cycle, is barely present in Narragansett Bay even though it's a major factor just a little farther out into Rhode Island Sound. Scientists traced that to differences ...

Black carbon is ancient by the time it reaches seafloor

(Phys.org) —A fraction of the carbon that finds its way into Earth's oceans—the black soot and charcoal residue of fires—stays there for thousands for years, and a new first-of-its-kind analysis shows how some black ...

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