A new study suggests that poleward boundary intensifications in the aurora are caused by fast flows of plasma from the poles into the auroral oval.
Research Spotlights
Research spotlights are plain-language summaries of recent articles published in AGU’s suite of 24 journals.
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On the Origin of Low-Angle Detachment Faults
Data from California's Whipple Mountains suggest this complex was formed by a succession of steep normal faults, challenging the paradigm that detachments are different types of faults.
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Alteration Along the Alpine Fault Helps Build Seismic Strain
Detailed analysis of cores drilled through New Zealand's most dangerous on-land fault indicates that its permeability and strength are altered by mineral precipitation between seismic events.
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Arctic Permafrost Thaw Would Amplify Climate Change
An international team probed Arctic permafrost samples to better understand the carbon feedback loop that could be set off by future thawing.
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A Two-Way Relationship Between the Atlantic and Pacific Oceans
Researchers have uncovered a new connection between sea surface temperatures in the Atlantic and tropical cyclones in the eastern Pacific that could improve accuracies of future cyclone forecasts.
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After Decades, High-Altitude Observations Revived at Jicamarca
Recent upgrades to the Jicamarca Radio Observatory in Peru allow it to probe electron densities several thousand kilometers above Earth, a feat it hasn't accomplished in 50 years.
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Scientists Develop New Tool to Monitor Reef Health
A first-of-its-kind system could reveal short-term changes in threatened reefs worldwide.
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Studying Martian Rocks Without Leaving Planet Earth
Matching Martian rock formations to those found on Earth can help researchers learn more about the Red Planet.
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Deep Ocean Layers Continue to Heat Up
Researchers look at more than 3 decades of temperature trends in the deep ocean to understand the layers' energy budgets.
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When Lower-Atmosphere Waves Invade the Upper Atmosphere
A review of the literature shows that weather nearer Earth's surface could produce up to 35% of the ionosphere's variability.