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Oceans

Two people, flanked by two observers, stand among a field of boulders, guiding a large hand drill through the length of a white fossilized coral.
Posted inNews

El Niño Varies More Intensely Now Than in the Past Millennium

by Luis Melecio-Zambrano 15 December 20221 February 2023

Researchers found evidence for a strengthening El Niño in living and fossilized Galápagos corals.

Satellite image of Earth showing the atmospheric plume blanketing the Pacific after the underwater eruption of Hunga Tonga–Hunga Ha‘apai
Posted inNews

Social Media Posts Reveal Human Responses to Deadly Tongan Eruption

by Erin Martin-Jones 14 December 202214 December 2022

Quantifying human responses to natural disasters could improve preparation for future threats, scientists say.

A map of the world centered on the Pacific Ocean, with continents in gray and oceans in white. Lines of bright colors cross the oceans and wind around continents, depicting the locations of transoceanic subsea cables.
Posted inNews

Making Underwater Cables SMART with Sensors

by Alka Tripathy-Lang 12 December 202212 December 2022

Future cables that stretch across the ocean, transmitting cat videos and financial transactions, could also contain temperature, pressure, and seismic sensors that would allow scientists to spy on the seafloor.

White outline of world continents against a black backdrop. Purple and yellow lines connect some points.
Posted inNews

Spurring Ocean Research with Open Data

by Robin Donovan 9 December 202210 December 2022

Ocean data abound, but accessing them is a challenge, making tackling climate change difficult. One nonprofit is trying to compile them.

People in orange work suits crouch next to small clear cylinders with brown material inside.
Posted inNews

In the Deepest Ocean Reaches, a Potent Pollutant Comes to Rest

by Sean Cummings 9 December 20222 March 2023

Surprising amounts of mercury settling into deep-sea trenches may provide a fuller picture of the metal’s path through the environment, but pulling it to the surface is no easy feat.

Photo of blue ice wall with pieces of ice falling into water in the foreground, causing the water to splash
Posted inNews

Underwater Sounds Help Reveal Extent of Glacial Calving

by Elise Overgaard 9 December 20229 December 2022

If a glacier calves into the Arctic Ocean, does it make a sound? Some scientists say yes and have devised a clever way to use those sounds to calculate the size of the fallen ice chunks.

A yellow submarine-shaped autonomous underwater vehicle hangs from a cable over the side of ship as technicians and scientists look on.
Posted inResearch Spotlights

Exploring a Warm Water Inflow Below an Antarctic Ice Shelf

Sarah Derouin, Science Writer by Sarah Derouin 5 December 20225 December 2022

Researchers guided an autonomous underwater submarine to capture the first direct observations of a warm water current flowing in below the Filchner-Ronne Ice Shelf in Antarctica.

Diagram showing the formation and preservation of the iron sulfide greigite in bioturbidated anoxic sediments.
Posted inEditors' Highlights

New Mechanism for “Giant” Greigite Growth in Deep-Sea Sediments

by Agnes Kontny 2 December 202214 March 2024

Understanding greigite formation pathways in sediments is a prerequisite for assessing the marine iron-sulfur-carbon cycle and yield reliable near-syn-sedimentary paleomagnetic records.

Two maps using color to show sea level and resulting self-attraction and loading field.
Posted inEditors' Highlights

Accurate Ocean Tides for Earth System Models

by Stephen M. Griffies 1 December 202216 February 2023

Accurate tide models require self-attraction and loading terms, but can this calculation be done accurately and efficiently for use in global tide and Earth system models?

Aerial view of sea ice meeting open water with snowy coastal hills in the background
Posted inResearch Spotlights

Dissecting Ocean Dynamics in Greenland Fjords

Aaron Sidder, freelance science writer by Aaron Sidder 18 November 2022

Researchers explored the patterns and drivers of variability in fjords linking the Greenland Ice Sheet and the Atlantic Ocean using numerical simulations and in situ observations.

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Features from AGU Publications

Research Spotlights

Where Do Antarctic Submarine Canyons Get Their Marine Life?

18 June 202518 June 2025
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Coupled Isotopes Reveal Sedimentary Sources of Rare Metal Granites

17 June 202516 June 2025
Editors' Vox

Inside Volcanic Clouds: Where Tephra Goes and Why It Matters

16 June 202512 June 2025
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