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geochemistry

Phytoplankton bloom in the Tasman Sea captured by the MODIS instrument on the Aqua satellite on 21 November 2017.
Posted inFeatures

Interpreting Mosaics of Ocean Biogeochemistry

by Andrea Fassbender, A. Bourbonnais, S. Clayton, P. Gaube, M. Omand, P. J. S. Franks, M. A. Altabet and D. J. McGillicuddy Jr. 17 December 201829 April 2022

Advances in technology and modeling capabilities are driving a surge in progress in our understanding of how ocean ecosystems mix and mingle on medium to small scales.

3D rendering of an O. megalodon shark
Posted inNews

Extinct Megatoothed Shark May Have Been Warm-Blooded

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 11 December 201826 January 2023

Preliminary results from a recent study may begin to shed light on why megalodons died out before the most recent ice age.

Researchers look at metals in the millimeter-thick sea surface microlayer to better understand how the layer can affect ocean health
Posted inResearch Spotlights

Why Trace Metals Cling to the Ocean’s Skin

by E. Underwood 14 August 201825 August 2022

Metals within the millimeter-thick sea surface microlayer may impact ocean health and climate.

Fireworks of many colors.
Posted inGeoFIZZ

A Rock Guide to Fireworks

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 3 July 20187 March 2022

Before a firework was red, it was a strontium salt waiting for its moment.

The Carambolo Treasure
Posted inNews

Fresh Take on a Gold Treasure’s Origins Using Geochemistry

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 21 May 20189 February 2023

Blending geoscience and archaeology, researchers apply a new technique to pinpoint where ancient and unique gold artifacts were crafted.

Posted inEditors' Vox

Multiple Choices Exist for Changing Ocean Oxygen Concentrations

by P. Brewer 14 May 201827 January 2023

Widespread declines in ocean oxygen concentrations are now being reported with authors offering quite different explanations. Which ones are correct?

Researchers examine the chemical relationships between water, sediment, and organisms that thrive beneath riverbeds
Posted inResearch Spotlights

Life in the Hyporheic Zone

by S. Witman 23 April 201822 December 2021

Defining the chemical relationships between water, sediment, and organisms that thrive beneath riverbeds.

Marine mollusk shells record the magnitude of the radiocarbon marine reservoir effect in their habitat.
Posted inEditors' Vox

Radiocarbon in the Oceans

by E. Q. Alves 17 April 201827 January 2022

Offsets in radiocarbon concentration within the ocean or between the ocean and the atmosphere are particularly useful proxies for a variety of studies.

Posted inEditors' Highlights

Unraveling Hemispheric Ocean Nitrate Supply Pathways

by S. B. Moran 10 April 201827 September 2022

Subsurface measurements of nitrogen and oxygen isotope ratios in nitrate reveal a predominantly southern hemisphere supply of nitrate to the equatorial Pacific.

Researchers examine cave stalagmites to understand how ice rafting events influence monsoon hydroclimate.
Posted inResearch Spotlights

How Ice Rafting Events Affect Asian Monsoon Hydroclimate

Sarah Stanley, Science Writer by Sarah Stanley 9 April 201816 March 2023

Cave stalagmites provide isotopic evidence that Bond events and Heinrich events have more variable effects on Asian monsoon hydroclimate during the last glacial period than during the Holocene.

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“Collaboration Helps Overcome Challenges in Air Quality Monitoring”
By Muki Haklay

EDITORS' VOX
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By Seaver Wang

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