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sea level change

A white landscape with five people standing around a white tower with a yellow cylinder hanging vertically in the middle
Posted inNews

“Icefin” Investigates a Glacial Underbelly

by Katherine Kornei 15 March 202316 March 2023

An instrument-laden submersible reveals where—and how rapidly—the Antarctic glacier is melting.

Two maps using colors to show flood depths.
Posted inEditors' Highlights

An Innovative Approach to Model Complex Hurricane Flood Hazards

by Andra Garner 12 January 202311 January 2023

A new study shows that it is possible to produce regional assessments of how hurricane flood hazards change due to both evolving storm tides and precipitation rates in a warming climate.

Graph showing the relationship between global-mean surface and rate of global-mean sea-level rise.
Posted inEditors' Highlights

Surface Temperature Sets the Pace of Sea Level Rise

by Christopher Piecuch 31 October 202221 February 2023

Reining in global mean sea level rise from land-ice wastage and ocean thermal expansion requires reducing global mean surface temperatures to near-preindustrial values.

Satellite view of an ice shelf and sea ice
Posted inResearch Spotlights

A Close Look at Melting Below Antarctica’s Largest Ice Shelf

by Rachel Fritts 28 October 202228 October 2022

Radar data reveal where, when, and how fast the base of the Filchner-Ronne Ice Shelf has been losing mass in recent years.

The research vessel Nathaniel B. Palmer studies the Thwaites Glacier in 2019.
Posted inNews

Seafloor Reveals a Period of Rapid Retreat for Thwaites Glacier

by Javier Barbuzano 13 October 202225 January 2023

New high-resolution seafloor imagery shows a series of delicate ridges produced by the glacier’s front as it bobbed daily with the tides, revealing a recent period of rapid retreat.New high-resolution seafloor imagery shows a series of delicate ridges produced by the glacier’s front as it bobbed daily with the tides, revealing a recent period of rapid retreat.

Aerial view of a muddy river delta with meandering stream channels emanating from a river emerging from a forest
Posted inResearch Spotlights

When Projecting Coastal Resilience, Sediment Compaction Is Key

by Morgan Rehnberg 30 September 202230 September 2022

The addition of new sediment helps build up lowland environments like deltas and marshes, but it also compacts materials beneath it—a vital, but often overlooked, factor in landscape evolution studies.

Diagram showing how the authors used GPS, anchors, and fiber-optic strain meters to measure coastal subsidence.
Posted inEditors' Highlights

Tracking Subsidence on Deltas With Fiber-Optics

by John Shaw 20 September 202220 January 2023

Fiberoptic strain meters capable of measuring micron-scale subsidence reveal a Holocene sediment package on the Mississippi Delta that is mostly stable.

A glacier cascades down the side of a mountain along the left side of this photograph. In the foreground is a shallow glacial lake that transitions from clear to icy blue and has numerous pebbles and smooth rocks strewn along the bottom. The sky is bright blue but shielded by low hanging clouds.
Posted inResearch Spotlights

Models Oversimplify How Melting Glaciers Deform Land

by Saima May Sidik 7 September 202228 September 2022

When glaciers melt, the land below deforms. Sea level data show that widely used models oversimplify the process.

A photo of the Morteratsch Glacier.
Posted inEditors' Vox

Modeling the Ice Flow and Evolution of Glaciers

by Harry Zekollari 31 August 202219 January 2023

Glaciers are crucial water resources and important sea level contributors. To accurately model glacier evolution, their mass balance and ice flow processes must be accounted for.

Icebreaker at work near glacier.
Posted inNews

Seashells and Penguin Bones Reveal Thwaites Glacier’s Quiet Past

by Javier Barbuzano 26 July 202226 July 2022

Antarctica’s Thwaites and Pine Island Glaciers are melting faster than they have in the past 5,500 years, new evidence shows. Against expectations, their pasts have been remarkably stable.

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