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beaches, coasts, & shorelines

Riverbed construction
Posted inFeatures

Grains of Sand: Too Much and Never Enough

by Alka Tripathy-Lang 25 January 202325 January 2023

Sand is a foundational element of our cities, our homes, our landscapes and seascapes. How we will interact with the material in the future, however, is less certain.

View of a house surrounded by floodwaters, with a piece of wood topped by a small United States flag floating in the foreground.
Posted inScience Updates

Engineering with Nature to Face Down Hurricane Hazards

by Krystyna Powell, Safra Altman and James Marshall Shepherd 5 January 20235 January 2023

Natural and engineered, nature-based structures offer promise for storm-related disaster risk reduction and flood mitigation, as long as researchers can adequately monitor and study them.

Aerial view of sea ice meeting open water with snowy coastal hills in the background
Posted inResearch Spotlights

Dissecting Ocean Dynamics in Greenland Fjords

by Aaron Sidder 18 November 2022

Researchers explored the patterns and drivers of variability in fjords linking the Greenland Ice Sheet and the Atlantic Ocean using numerical simulations and in situ observations.

A sunset casts pink hues onto clouds over a waterway, with trees silhouetted against the light.
Posted inResearch Spotlights

Measuring the Ins and Outflows of Estuaries

by Saima May Sidik 8 November 20228 November 2022

Scientists modeled monitoring schemes in three different estuaries to determine instrument layouts that could effectively and efficiently measure exchanges of salt water and freshwater.

Sandbags of wildfire debris are spread on Goleta Beach, Calif.
Posted inNews

Managing Mudslide Debris After Fires

by Robin Donovan 14 October 202214 October 2022

California officials faced a conundrum in dealing with mudslides after the Thomas Fire.

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.

Close-up of green olivine sand grains
Posted inNews

Can These Rocks Help Rein in Climate Change?

by Tim Hornyak 27 September 202227 September 2022

Spreading olivine on beaches could accelerate ocean uptake of carbon dioxide and potentially limit climate change. The concept and execution still face some scrutiny from scientists.

Figure 1 from the paper, showing a schematic of key processes controlling coastal carbon dynamics.
Posted inEditors' Highlights

Substantial Advance Towards a Global Coastal Carbon Model

by Andreas Oschlies 27 September 202220 October 2022

First simulations of a new biogeochemistry-circulation coastal grid refinement demonstrate seamless inclusion of small-scale coastal processes in a state-of-the-art Earth system model.

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.

Photograph of an eroding tidal channel bank.
Posted inEditors' Vox

Bank Retreat Controls River and Estuary Morphodynamics

by Kun Zhao, Giovanni Coco, Zheng Gong, Stephen E. Darby, Stefano Lanzoni, Fan Xu, Kaili Zhang and Ian Townend 13 September 202213 September 2022

Understanding and predicting the geomorphological response of fluvial and tidal channels to bank retreat underpins the robust management of water courses and the protection of wetlands.

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Features from AGU Journals

RESEARCH SPOTLIGHTS
JGR: Solid Earth
“New Tectonic Plate Model Could Improve Earthquake Risk Assessment”
By Morgan Rehnberg

EDITORS' HIGHLIGHTS
AGU Advances
“Eminently Complex – Climate Science and the 2021 Nobel Prize”
By Ana Barros

EDITORS' VOX
Perspectives of Earth and Space Scientists
“New Directions for Perspectives of Earth and Space Scientists”
By Michael Wysession


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