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deltas

Subaqueous seismic profiles from the paper.
Posted inEditors' Highlights

Delta Degradation Leads to Exacerbated Greenhouse Gas Emissions

by Ton Hoitink 31 March 202319 September 2023

Seismic ship surveys and seabed elevation maps of the Yangtze subaqueous delta reveal how the reduction of sediment supply to the coastal ocean can trigger increased greenhouse gas emissions.

Satellite image of the Nile Delta
Posted inEditors' Highlights

Tracking Heavy Metal Accumulation in the Nile Delta

by Benjamin Sulman 22 March 202319 September 2023

Sediment measurements show that flow alterations and discharges are driving increasing concentrations of multiple heavy metals in the Nile Delta, threatening ecosystems, agriculture, and human health.

Posted inEditors' Highlights

Suivie de l’accumulation des métaux lourds dans le Delta du Nil

by Benjamin Sulman 22 March 202319 September 2023

Les analyses de sédiments montrent que la réutilisation de l’eau non traitée et la construction de barrages entraînent l’augmentation des concentrations de métaux lourds dans le Delta du Nil, menaçant gravement les écosystèmes, l’agriculture et la santé humaine.

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 202219 September 2023

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

Satellite image of the Mississippi delta.
Posted inNews

Estimating Land Loss in River Deltas

by Mohammed El-Said 31 August 202219 September 2023

Some deltas are susceptible to land loss during sea level rise, whereas others gain land because of changes in the courses of rivers.

Alligator on a log in the waters of the Mississippi River Delta
Posted inNews

Building a Better River Delta

by Danielle Beurteaux 8 September 202119 September 2023

People have been engineering river deltas for millennia, but new research identifies the optimal placement for diversions that benefit both local communities and the environment—and it might be close to a city.

Image of the Jezero delta on Mars
Posted inEditors' Highlights

How Fast Did an Ancient Martian Delta Form?

by F. Nimmo 23 April 202019 September 2023

Terrestrial meander migration rates are used to estimate a formation timescale of decades for Jezero delta on Mars.

Aerial view of a flat floodplain delta, agricultural land, and a town beyond
Posted inResearch Spotlights

Finding Natural Solutions to Man-Made Problems in River Deltas

Kate Wheeling, freelance science writer by Kate Wheeling 3 April 202019 September 2023

Decades of research on river deltas identify gaps in our knowledge of delta behavior and the tools required to fill them in.

Satellite view of the Lena River delta in June 2019
Posted inResearch Spotlights

River Deltas at the Top of the World

Elizabeth Thompson by Elizabeth Thompson 20 March 202019 September 2023

The water that filters through river deltas has a large effect on the Arctic Ocean. A new study explores factors that shape Arctic river deltas and how delta form in turn changes water flow.

Ligeia Mare
Posted inNews

Scientists Search for Deltas on Saturn’s Largest Moon

JoAnna Wendel, freelance science writer and illustrator by JoAnna Wendel 31 January 202019 September 2023

Saturn’s moon Titan has rivers that empty into seas…but where are the deltas?

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