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.
Research involving the University of Liverpool has discovered a trend of increasing surface meltwater in East Antarctica. In an ambitious new study, they produced the first Antarctic-wide, high-resolution monthly dataset ...
Earth Sciences
Jul 7, 2025
0
102
Ice loss in Antarctica and its impact on the planet—sea level rise, changes to ocean currents and disturbance of wildlife and food webs—has been in the news a lot lately. All of these threats were likely on the minds of the ...
Environment
Jul 3, 2025
0
31
On 28 November 1966, an American airplane flies over the Antarctic Peninsula just south of the southernmost tip of Chile. On board is a photographer, probably from the U.S. Navy, whose job is to map the Antarctic landscape. ...
Earth Sciences
Jul 2, 2025
0
40
Scientists have discovered that changes in climate and water levels are reducing the ability of some ecosystems in the Everglades to sequester carbon, while the environmental shifts are enhancing the potential for carbon ...
Earth Sciences
Jun 30, 2025
2
159
While satellites have revolutionized our ability to measure sea level with remarkable precision, their data becomes less reliable near coasts—where accurate information is most urgently needed.
Environment
Jun 25, 2025
0
21
A new international research study has forecast the impacts of climate change on the world's coastal oceans to the end of the century.
Environment
Jun 23, 2025
0
32
When visiting Godrevy beach on the north Cornish coast, most people look out to sea at the lighthouse, surfers and seals rather than the cliffs behind. But these cliffs hold a history of past climate and sea levels that is ...
Earth Sciences
Jun 23, 2025
0
33
Lenore Tedesco doesn't need to venture far to witness sea-level rise. She tracks its relentless advance from her window at work.
Earth Sciences
Jun 4, 2025
0
89
Collapse of the West Antarctic Ice Sheet could be triggered by very little ocean warming above present-day, leading to a devastating four meters of global sea level rise to play out over hundreds of years, according to a ...
Earth Sciences
Jun 3, 2025
0
61
New research led by the University of Sydney adds to our understanding of how rapidly rising sea levels due to climate change foreshadow the end of the Great Barrier Reef as we know it.
Earth Sciences
Jun 2, 2025
0
24
