Paleoceanography is the scientific study of past ocean states, processes, and variability on geological timescales, using physical, chemical, biological, and isotopic proxies preserved in marine sediments, microfossils, corals, and other archives. It reconstructs parameters such as sea-surface and deep-water temperatures, salinity, circulation patterns, biogeochemical cycles, ice volume, and sea level, often through analyses of stable and radiogenic isotopes, trace metals, and sedimentological characteristics. Paleoceanography is central to understanding ocean–climate feedbacks, carbon cycle dynamics, and the response of the ocean system to external forcings, and it provides critical boundary conditions and validation targets for climate and Earth system models.
Some newly published findings from an Idaho State University professor and his colleagues point out how changes to currents an ocean away can impact climates on the other side of the globe. The new paper published in Nature ...
Earth Sciences
Apr 2, 2026
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Researchers have uncovered new evidence that short-lived spikes in ocean phosphorus may have played a major role in two of the most severe marine extinctions in Earth's history. Dr. Matthew Dodd from The University of Western ...
Earth Sciences
Apr 1, 2026
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The analysis of a sediment core from an oasis lake in Chad provides new insights into the history of precipitation in the Sahara. The study, led by the University of Cologne, shows that a prolonged wet phase, which lasted ...
Earth Sciences
Mar 26, 2026
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Cycles in the growth and decay of Antarctica's ice sheets once shaped marine biological productivity thousands of miles away in the subtropical ocean, according to new research led by scientists at the University of Wisconsin-Madison. ...
Earth Sciences
Mar 24, 2026
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When most people think about corals, they imagine a tropical reef with crystal blue water, teeming with colorful fish. But, in the depths of the cold, murky Gulf of Maine, deep-sea corals thrive, feasting on a steady supply ...
Plants & Animals
Mar 20, 2026
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33
New analyses of ancient ice from Antarctica and the air contained inside it are extending the history of Earth's climate records and expanding researchers' understanding of how the planet has changed over the last 3 million ...
Earth Sciences
Mar 18, 2026
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An international team led by the Centro Nacional de Investigación sobre la Evolución Humana (CENIEH) has just published a paper in the journal Quaternary Science Reviews reconstructing episodes of highstands of the Black ...
Earth Sciences
Mar 18, 2026
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Navigating monolithic icebergs, massive ocean waves and sub-zero snowstorms, CSIRO research vessel (RV) Investigator is a workhorse for Antarctic science. In just over 11 years and spread across seven voyages, the vessel ...
Earth Sciences
Mar 16, 2026
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Climate change is lengthening our days because rising sea levels slow Earth's rotation. Researchers from the University of Vienna and ETH Zurich now show that the current increase in day length—1.33 milliseconds per century—is ...
Earth Sciences
Mar 12, 2026
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A new study led by researchers at the Earth-Life Science Institute (ELSI) at Institute of Science Tokyo challenges a long-standing assumption about Earth's most extreme ice ages. Using numerical geochemical models, the team ...
Earth Sciences
Mar 10, 2026
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