Sand dunes migrate—so why haven’t some budged in 60 years?
Research Spotlights
Research spotlights are plain-language summaries of recent articles published in AGU’s suite of 24 journals.
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Radio Blackout! Ham Radio as an Operational and Scientific Instrument
Monitoring solar activity that disrupts communications can be helped by crowdsourced and automated reports from amateur radio operators.
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Tracking Down a Subduction Zone Earthquake
Researchers use computer simulations to find the date and earthquake source of an ancient tsunami that deposited sediment in a Hawaii sinkhole.
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Bank Materials Strongly Influence River Valley Evolution
Models suggest that the shape of river valleys depends strongly on how meandering rivers interact with the sediment and bedrock of the banks.
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Wave Ripples Spaced by Flow Downstream of Ripple Peaks
The well-known ratio between sand ripple spacing and wave-driven flow oscillations may be dictated by flow dynamics downstream of ripple crests.
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Rapid Gas Hydrate Forms Pockmarks in Nigeria's Seafloor
The seafloor in deep water regions off the coast of Nigeria is speckled with pockmarks that scientists suggest were mainly made by the rapid formation of gas hydrate.
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Caterpillar-Like Motion of the Greenland Ice Sheet
New measurements made in Greenland’s ice sheet show ice deformation in a caterpillar-like flow.
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What’s Driving Titan’s Atmosphere?
A new analysis of Cassini data reveals a major source of heavy hydrocarbons on Saturn’s moon Titan.
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Clouds Visible at Twilight Reveal Mysteries of Gravity Waves
What can thin, wispy, twilight clouds tell scientists about the dynamics of the atmosphere?
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Mapping Seismic Activity in the Pamir Mountains
Researchers plot deformation from 6000 seismic events across the central Asian mountain range to better understand its tectonic history.