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Geohealth

Research Spotlight 7 February 2019

More Evidence Humans Migrated to the Americas via Coastal Route

A new chronology shows that ice-free areas existed along the British Columbia coast earlier than previously thought.

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Atmospheric Sciences

Research Spotlight 5 February 2019

Observations Show Gravity Waves Above Antarctica Dance in Winter

Year-round observations show gravity waves above Antarctica exhibit seasonal patterns that peak in winter, which could help researchers trace the source of this mysterious phenomenon.

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Space Science & Space Physics

Research Spotlight 28 January 2019

New Plasma Wave Observations from Earth’s Magnetosphere

The first simultaneous observations of multiple electromagnetic wave types in Earth’s magnetosphere may inaugurate a new field of inquiry into cross-frequency wave interactions.

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Geology & Geophysics

Research Spotlight 23 January 2019

Ancient Faults Amplify Intraplate Earthquakes

A comparison of deformation rates from Canada’s Saint Lawrence Valley offers compelling evidence that strain in the region is concentrated along ancient structures from previous tectonic cycles.

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Geology & Geophysics

Research Spotlight 22 January 2019

Unraveling the Origin of Slow Earthquakes

Different nucleation styles detected in five slow-slip events in the same area of Japan’s Ryukyu subduction zone suggest the physical properties along this tectonic plate interface change over time.

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Geology & Geophysics

Research Spotlight 7 January 2019

How Do Turbidity Currents Accelerate?

Flume experiments show that a self-reinforcing cycle can strengthen the currents responsible for transporting large amounts of sediment to the deep oceans.

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Geology & Geophysics

Research Spotlight 3 January 2019

Regional Metamorphism Occurs Before Continents Collide

Evidence from collision zones suggests that the high temperatures that create regional zones of metamorphic minerals occur in wide, hot back arcs prior to continental collision deformation.

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Geochemistry, Mineralogy, Volcanology

Research Spotlight 8 November 2018

Volcano in Iceland Is One of the Largest Sources of Volcanic CO₂

High-precision airborne measurements, in combination with atmospheric modeling, suggest that the Katla subglacial caldera may be one of the planet’s biggest sources of volcanic carbon dioxide.

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Geology & Geophysics

Research Spotlight 5 November 2018

Unraveling the Origins of Australia’s Ancient Mountain Chains

New data synthesis suggests that varying rates of trench retreat along the margin of the Gondwana supercontinent were responsible for the curvature of the Tasmanide mountain chains.

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Geology & Geophysics

Research Spotlight 24 October 2018

A More Detailed Look at Earth’s Most Poorly Understood Crust

The second-generation Antarctic Digital Magnetic Anomaly Project offers a powerful new tool for probing the structure and evolution of the southernmost continent’s lithosphere.

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