Chemical tracers Archives

Geochemistry, Mineralogy, Volcanology

Researchers use cosmogenic isotopes to study ocean river transport.

Research Spotlight 23 August 2017

Tracing Land to Ocean River Transport with Cosmogenic Isotopes

Beryllium stored in marine sediments can help scientists study erosion and other environmental changes.

Biogeosciences

Researchers try to better model the role of Arctic plants on nitrogen uptake.

Research Spotlight 20 June 2017

Tracking Nitrogen in Arctic Plants

Prevailing nutrient uptake models do not fit Arctic plants. Scientists test a new option that overcomes older models’ shortcomings.

Ocean Sciences

Wedell Sea ice source of Antarctic bottom water

Research Spotlight 12 July 2016

How Do the Deep Waters of the Antarctic Form?

Researchers uncover new insights into the life cycle of water in the Antarctic region by measuring noble gas concentrations.

Ocean Sciences

Research Spotlight 23 February 2016

Tracking Radioactive Cesium Released During Fukushima Disaster

Scientists probe the Pacific to determine how far the damage from one of the largest nuclear meltdowns in history extends.

Hydrology, Cryosphere & Earth Surface

Project Update 11 August 2015

Small Rivers Could Have Big Impact on Arctic Ocean

The Mackenzie River carries the bulk of freshwater flow from North America's tundra to the North Atlantic. But what about the effects of smaller rivers from Canada's Arctic islands?

Ocean Sciences

Research Spotlight 22 April 2015

Humans Greatly Increase Mercury Levels in the Ocean

A study of the natural cycle of mercury reveals that humans are to blame for a five- to sixfold increase in the oceanic concentrations of the potentially toxic element.

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Ocean Sciences