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.
How much ice is stored in the world's glaciers? And where exactly is it located? A new study led by Ca' Foscari University of Venice, in collaboration with the Institute of Polar Sciences of the National Research Council ...
Earth Sciences
Aug 7, 2026
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Along the three coasts of the contiguous United States, a silent race unfolds. Fueled by climate change, sea levels rise faster than at any time in recent geologic history. Meanwhile, coastal wetlands cling to a slim lead, ...
Earth Sciences
Aug 3, 2026
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508
A major new digital mapping project could help safeguard some of the world's most important and well-known heritage sites from rising seas, flooding and coastal erosion. Researchers led by scientists from the University of ...
Environment
Jul 24, 2026
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13
A pioneering study has revealed that by the turn of the next century, at least half a million more people in the UK will be at risk of coastal flooding—a 25% increase compared with now. The research, led by the Met Office ...
Earth Sciences
Jul 21, 2026
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A team of international scientists sets sail Thursday from Britain for Greenland to study its rapidly melting ice using drones, mini-submarines and autonomous swimming robots.
Earth Sciences
Jul 16, 2026
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New Antarctic research shows the deepest layer of the Southern Ocean is shrinking faster than scientists realized, with the rate of change accelerating over the past decade. This is of worldwide significance because as it ...
Earth Sciences
Jul 15, 2026
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52
Ocean tides push upstream along coastal rivers, in some cases reaching hundreds of kilometers (hundreds of miles) inland. These inland stretches are known as tidal rivers, and they're the scene of complex interactions between ...
Earth Sciences
Jul 14, 2026
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9
London is underwater. The Houses of Parliament, Buckingham Palace, St Paul's Cathedral and the Bank of England are all submerged. Far away, the West Antarctic and Greenland ice sheets have collapsed, triggering accelerated ...
Environment
Jul 13, 2026
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Earth scientists at Nanyang Technological University, Singapore (NTU Singapore) have published an international study showing that major earthquakes in Southeast Asia can affect regional relative sea-level projections.
Earth Sciences
Jul 13, 2026
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Following a four-year study, scientists at UC San Diego's Scripps Institution of Oceanography released a new report to determine whether an early warning system could detect a landslide before it happens. The "California ...
Earth Sciences
Jul 9, 2026
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