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Hazards & Disasters

Researchers examine the mechanics behind a deadly rock avalanche in China.
Posted inResearch Spotlights

What Causes Rock Avalanches?

by Terri Cook 24 April 201710 March 2023

Experimental studies of frictional weakening beneath a deadly rock avalanche in China help to clarify the mechanisms that cause these devastating natural disasters.

A new study uncovers the influence of sediments from high-discharge events on the transfer of momentum between water layers in the Guadalquivir River Estuary.
Posted inResearch Spotlights

Dam Discharge Events Alter Water Flow in an Estuary in Spain

Sarah Stanley, Science Writer by Sarah Stanley 24 April 20171 February 2023

Three-year observations suggest that increased sediment concentrations inhibit vertical transfer of momentum between water layers for more than 2 months after a high-discharge event.

Researchers use zircon dating to unravel the processes behind the Toba supereruption.
Posted inResearch Spotlights

What Led to the Largest Volcanic Eruption in Human History?

by S. Witman 13 April 201716 March 2022

A mineral-dating project at the Toba caldera in Indonesia sheds light on the science of supereruptions.

Artist’s illustration of events on the Sun changing the conditions in near-Earth space.
Posted inResearch Spotlights

For Magnetic Reconnection Energy, O—not X—Might Mark the Spot

by Mark Zastrow 10 April 201718 July 2023

A new analysis of satellite data could upend conventional wisdom about how solar storms produce their dangerous radiation—not from X-shaped mergers of magnetic field lines but from swirling vortices.

Kīlauea is one of the volcanoes fingerprinted in a new study.
Posted inNews

“Fingerprinting” Volcanic Tremors May Help Forecast Eruptions

Lucas Joel by L. Joel 10 April 201711 May 2022

Volcano seismic waves produce distinct tremor patterns, or "fingerprints," shared by different kinds of volcanoes.

A hollow lava balloon recovered from the 1998-2001 eruption near the Azores, Portugal.
Posted inNews

Balloons of Lava Bubble into the Ocean from Seafloor Blisters

by Lauren Lipuma 5 April 20174 October 2021

These peculiar features of submarine volcanic eruptions could be the result of undersea lava lakes.

A cloud of ash erupts from Eyjafjallajokull Volcano in Iceland.
Posted inScience Updates

Volcanic Ash Particles Hold Clues to Their History and Effects

by G. A. Hoshyaripour 3 April 20172 May 2022

Volcanic Ash as an Active Agent in the Earth System (VA3): Combining Models and Experiments; Hamburg, Germany, 12–13 September 2016

Researchers analyze recent earthquakes in Chile to better understand how major earthquakes cluster
Posted inResearch Spotlights

Why Do Great Earthquakes Follow Each Other at Subduction Zones?

by Terri Cook 31 March 201716 March 2022

A decade of continuous GPS measurements in South America indicates that enhanced strain accumulation following a great earthquake can initiate failure along adjacent fault segments.

Technicians maintain an enhanced data buoy in the northwest Pacific, part of a new program to help monitor typhoons.
Posted inScience Updates

New Data Buoys Watch Typhoons from Within the Storm

by S. Jan, Y. J. Yang, H.-I. Chang, M.-H. Chang and C.-L. Wei 27 March 20179 February 2022

Advanced real-time data buoys have observed nine strong typhoons in the northwestern Pacific Ocean since 2015, providing high-resolution data and reducing the uncertainty of numerical model forecasts.

Posted inEditors' Vox

Neotectonics and Earthquake Forecasting

by I. Çemen and Y. Yilmaz 23 March 20176 October 2021

The editors of a new book describe the evolution of major earthquake producing fault zones in the eastern Mediterranean region and explore how earthquake forecasting could improve.

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Features from AGU Publications

Research Spotlights

How Tides and River Water Combine to Amplify Floods

14 July 202614 July 2026
Editors' Highlights

A Satellite-Based Global Carbon Flux Product is Sensitive to Droughts 

8 July 20266 July 2026
Editors' Vox

Small-Scale Indian Ocean Dynamics Underpin Marine Ecology and Climate

4 June 20263 June 2026
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