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.
These recent sunny days bring the last chances to access the Rhode Island coastline before chillier weather sets in, though that won't keep Jesse Reiblich away. When he's not in or around the water—as an avid surfer, diver, ...
Environment
Oct 8, 2025
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Sea level rise could put more than 100 million buildings across the Global South at risk of regular flooding if fossil fuel emissions are not curbed quickly, according to a new McGill-led study published in npj Urban Sustainability.
Earth Sciences
Oct 3, 2025
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As global temperatures rise, thermal expansion of oceans and melting ice sheets are driving up sea levels worldwide. In many coastal areas, land subsidence—caused by groundwater extraction and rapid urbanization—further exacerbates ...
Earth Sciences
Sep 29, 2025
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Human settlements around the world are moving inland and relocating away from coastlines as sea levels rise and coastal hazards grow more severe, but a new international study shows the poorest regions are being forced to ...
Earth Sciences
Sep 24, 2025
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Hidden beneath the biggest ice mass on Earth, hundreds of subglacial lakes form a crucial part of Antarctica's icy structure, affecting the movement and stability of glaciers, and consequentially influencing global sea level ...
Earth Sciences
Sep 19, 2025
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Warm water flowing into fjords and beneath ice shelves will continue to be a prime cause of glacial melting as global temperatures rise. This melting will, in turn, contribute to sea level rise and increasing inundation of ...
Earth Sciences
Sep 15, 2025
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Antarctic ice is melting. But exactly which forces are causing it to melt and how melting will influence sea level rise are areas of active research. Understanding the decay of ice shelves, which extend off the edges of the ...
Earth Sciences
Sep 8, 2025
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Deep in Earth's past, an icy landscape became a seascape as the ice melted and the oceans rose off what is now the northeastern United States. Nearly 50 years ago, a U.S. government ship searching for minerals and hydrocarbons ...
Environment
Sep 5, 2025
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A new study reveals a wide variety of approaches across the U.S. for establishing building elevation guidelines that account for future sea level rise, highlighting a need for more standardized methods. The University of ...
Environment
Sep 3, 2025
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In higher elevations, firn, frozen water that is something between snow and ice, covers the top of glaciers. Firn plays a critical role in regulating glacial meltwater and sea level rise.
Environment
Sep 2, 2025
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