Sea-level change refers to temporal variations in the height of the global or regional ocean surface relative to a reference datum, driven by combined effects of eustatic, isostatic, and steric processes. Eustatic change primarily arises from alterations in ocean mass, notably through glacial–interglacial ice-sheet dynamics and contemporary land ice melt. Isostatic and tectonic processes modify the vertical position of the solid Earth, producing relative sea-level change at specific locations. Steric contributions reflect temperature- and salinity-driven density changes that alter ocean volume. Quantifying sea-level change integrates tide-gauge records, satellite altimetry, gravimetry, and glacial isostatic adjustment models for reconstructing past variability and constraining projections.
Recent storms washed away large sections of roads in the UK after sea defenses were damaged. For residents, it was a shock. But for coastal scientists, it was not unexpected.
Environment
Feb 7, 2026
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People living on the low-lying shores of the Bristol Channel and Severn estuary began their day like any other on January 30, 1607. The weather was calm. The sky was bright.
Earth Sciences
Jan 29, 2026
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Even as global warming causes sea levels to rise worldwide, sea levels around Greenland will likely drop, according to a new paper published in Nature Communications. "The Greenland coastline is going to experience quite ...
Earth Sciences
Jan 26, 2026
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Greenland, which has been prominently in the news in recent days, hosts a vast ice sheet. If it melts, it will become one of the largest contributors to global sea-level rise. Under a high-emissions scenario, the Greenland ...
Earth Sciences
Jan 22, 2026
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Beneath Antarctica's Ross Ice Shelf lies one of the least measured oceans on Earth—a vast, dark cavity roughly twice the volume of the North Sea.
Earth Sciences
Jan 22, 2026
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A study published in Nature shows that many of the world's major river deltas are sinking faster than sea levels are rising, potentially affecting hundreds of millions of people in these regions.
Earth Sciences
Jan 14, 2026
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131
The Thwaites and Pine Island glaciers, located in the Amundsen Sea sector of the West Antarctic Ice Sheet (WAIS), are among the fastest-melting glaciers on Earth. Together, they are losing ice more rapidly than any other ...
Earth Sciences
Jan 10, 2026
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143
The extent and speed of ice moving off the ice sheets of Greenland and Antarctica into the sea—an important dynamic for climate and sea-rise modeling—has been captured over a 10-year period by satellites from the Copernicus ...
Earth Sciences
Jan 7, 2026
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Turquoise waves splash against the white sand beaches of the Bijagos archipelago, where locals fear rising sea levels will swallow their islands whole.
Environment
Dec 23, 2025
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249
New findings about ocean processes in the Antarctic show melting ice shelves and changes to sea ice could have catastrophic implications for the global climate.
Earth Sciences
Dec 18, 2025
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