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Oceans

In this bird’s-eye view from a satellite, white ice meets gray ocean water.The ice is fractured into many smaller pieces.
Posted inResearch Spotlights

Warm Seawater Encroaches on Major Antarctic Ice Shelf

Sarah Stanley, Science Writer by Sarah Stanley 8 January 20258 January 2025

In unprecedented detail, new research illuminates the seasonal flow of warm water toward the Filchner-Ronne Ice Shelf.

Graphs and a map from the study.
Posted inEditors' Highlights

Fast Adept Sea Ice Forecasts

by Andrew Roberts 8 January 202520 December 2024

Artificial intelligence facilitates an efficient, skillful surrogate of a coupled Arctic sea ice prediction model using generative diffusion.

Rough ice extends away from a hilly, frozen shoreline.
Posted inResearch Spotlights

Cold Days Bring Fast Ice

by Saima May Sidik 20 December 202420 December 2024

Thirty-seven years of observations reveal the meteorological conditions that lead to persistent, thick fast ice in Antarctica.

A black smoker, shaped like a stone cylinder on the ocean floor, spews black smoke into the water.
Posted inNews

Arctic Hydrothermal Vents May Resemble Those on Enceladus

by Anna FitzGerald Guth 17 December 202417 December 2024

By studying hydrogen-rich vent sites on Earth, scientists could learn more about the hidden ocean of Saturn’s icy moon—one of our solar system’s likeliest candidates for harboring life beyond Earth.

An image of Earth’s globe flattened out, with a detailed map of the ocean floor
Posted inNews

Satellite Measurements Make Major Seafloor Map Improvements

by Emily Dieckman 12 December 202410 January 2025

Though ship-based sounding has mapped some areas of the ocean floor in higher resolution, researchers have used SWOT data to create a detailed new map of the seafloor, including thousands of previously undetected small seamounts.

Earth’s mid-ocean ridge system, shown in mostly blue and green.
Posted inNews

Mid-Ocean Ridges Could Be Dispersing Thermophilic Bacteria

by Miriam Bahagijo 12 December 202412 December 2024

Scientists suggest that two strains of endospores located more than 4,000 kilometers away from one another originated in the same place: along the Mid-Atlantic Ridge.

Satellite imagery of Alaska’s coastline. Fans of gray and brown silt appear stacked on top of each other in the blue ocean.
Posted inNews

Coastlines Around the World Are Losing Sediment

by J. Besl 12 December 202412 December 2024

A new tool maps coastal sediments on the basis of water color. It shows that 75% of the world’s coastlines may be losing suspended sediment.

Park rangers walk away from marine debris. A small stump appears by the waterline.
Posted inNews

Buried Tree Stumps Show Shoreline Shifts of the Outer Banks

by J. Besl 11 December 202411 December 2024

Storms are unburying centuries-old stumps on North Carolina’s barrier islands. Researchers hope these long-gone forests can help land managers plan for the future.

A dark, moody image of ice parcels floating in the Arctic on a cloudy day
Posted inNews

The Survival of Arctic Sea Ice May Depend on Its Travel Routes

by Mahima Samraik 9 December 20249 December 2024

Researchers find that the motions of ice parcels determine which ones survive the annual summer melt.

An image from under a microscope of luminous objects shaped like seashells. The background is a purplish blue color.
Posted inResearch Spotlights

Getting to the Bottom of Cenozoic Deep-Ocean Temperatures

Aaron Sidder, freelance science writer by Aaron Sidder 2 December 20242 December 2024

Reconstructing past ocean conditions with oxygen isotopes could provide more information about how Earth’s climate evolved over time, but methods for reconstructing these data can yield varying results.

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Features from AGU Publications

Research Spotlights

How Greenland’s Glacial Troughs Influence Ocean Circulation

29 May 202529 May 2025
Editors' Highlights

Seasonal Iron Cycle and Production in the Subantarctic Southern Ocean

29 May 202529 May 2025
Editors' Vox

Keeping Soil Healthy: Why It Matters and How Science Can Help

29 May 202529 May 2025
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