Scientists capture the first complete image of Earth’s luminous geocorona and prove its ecliptic north–south symmetry.
Research Spotlights
Research spotlights are plain-language summaries of recent articles published in AGU’s suite of 24 journals.
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Scientists Create Catalog of Altotiberina Fault in Italy
More than 37,000 small earthquakes paint a picture of the fault’s behavior and seismic potential.
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Preserving a 45-Year Record of Sunspots
Maps reveal how the Sun’s magnetic field evolves through solar cycles.
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Accounting for the Missing Silica in the Marine Sediment Cycle
Cosmogenic silicon-based estimates of the amount of biogenic silica stored in clays along continental margins could explain the large discrepancy in the nutrient’s global marine budget.
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How Drought Plays Out
Humans are less likely to deplete groundwater when rainfall varies between years.
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Rethinking How Water Circulates Between the Oceans and Land
A reexamination of the global water cycle shows that tropical coastlines exert a profound influence on atmospheric water circulation by wringing water vapor from the atmosphere.
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A Better Way to Probe Peat
Florida scientists use ground-penetrating radar to image underground carbon stores in the Disney Wilderness Preserve.
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Using Radar to Understand How Volcanic Eruptions Evolve
Radar satellite imagery can be used to measure constructional changes in the topography of long-lived volcanoes, according to a new study of Ecuador’s El Reventador volcano.
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Testing a New Tool That Illuminates Tiny Fractures in Coal
A computational model outperforms a widely used microcomputed tomography imaging method in characterizing coal fractures.
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Tracing Electric Currents That Flow Along Earth’s Magnetic Field
A new study uses satellite data to examine a worldwide system of electric currents in greater detail than ever before.