Data from seismometers spread out across the United States give new clues to the location of structures in the underlying mantle.
JoAnna Wendel
JoAnna Wendel is a freelance science writer and cartoonist. She covers topics ranging from the geology of faraway moons to the behavior of animals in our oceans. She served as a staff writer for Eos from 2014 to 2018, then worked in communications in NASA’s Planetary Sciences Division. JoAnna is now freelancing full time as a writer and artist.
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Research Shines Light on Asthenosphere's Contribution to Hot Spots
What role does the asthenosphere play in midplate volcanism?
Posted inResearch Spotlights
River Slope Connects Modern Topography with Ancient Tectonics
Scientists create models to help them figure out how the slope of a river can record ancient tectonic activity.
Posted inResearch Spotlights
Where Does the Bed of a River Change from Gravel to Sand?
Analysis of the Fraser River suggests that riverbed sediments shift abruptly depending on river slope changes and water speed.
Posted inResearch Spotlights
What Causes Nitric Oxide to Infiltrate the Ozone Layer?
Processes in the polar atmosphere can cause nitric oxide (NO)-enriched air to descend and destroy stratospheric ozone. Scientists explore one cause of these NO fluxes, stratospheric sudden warming.
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Lightning Strikes Predicted to Increase as Climate Warms
New study suggests that the frequency of lightning strikes will increase as the climate continues to warm.
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Upper Atmosphere Has Cooled Steadily for Three Decades
Scientists projected that the upper atmosphere would continue to cool and contract with rising greenhouse gas emissions. Now, these projections have been confirmed for the first time.
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Reading Backscatter from Near-shore Ocean Waves
Researchers use radar wave scattering properties of nearshore waves to studying shoreline dynamics.
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Tectonic Events May Have Triggered the Cambrian Explosion
A researcher proposes a tectonic mechanism that could have helped drive one of the biggest evolutionary events in history: the Cambrian Explosion.
Posted inResearch Spotlights
Minerals in Martian Meteorite Illuminate Magnetic Mysteries
What causes the magnetic anomalies found on Mars? Scientists find revealing analogues in a tiny sample of Martian rock that could help answer this question.