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Oceans

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 202416 July 2025

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.

Graphs from the paper.
Posted inEditors' Highlights

Characteristics of Moist Layers over the Tropical Atlantic

by Suzana Camargo 22 November 202420 November 2024

In a new study, characteristics of elevated moist layers, their seasonality, spatial distribution, structure, and the coupling of mid-tropospheric circulation and convection are examined over the tropical Atlantic.

Una ilustración mostrando la Corriente de Florida entre Florida y las Bahamas
Posted inNews

La corriente de Florida podría estar desacelerándose, pero no por mucho

by Grace van Deelen 21 November 202419 December 2024

Una corrección necesaria a un conjunto de datos ampliamente utilizados redujo las estimaciones de los científicos de cómo se ha debilitado la circulación oceánica.

Posts pagination

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Over a dark blue-green square appear the words Special Report: The State of the Science 1 Year On.

Features from AGU Publications

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Unveiling Atmospheric Circulation on Mars with Magnetic Field Data 

3 September 20261 September 2026
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AGU Launches New Special Collection at the Nexus of Science and Policy

3 September 20263 September 2026
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