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Sumatra

Map and 2 graphs form the paper
Posted inEditors' Highlights

Earthquakes Have Preparatory Stage Years Before Rupture

by Victor Tsai 29 September 202329 September 2023

Tidally induced seismicity increased locally before the 2019 Ridgecrest earthquake, suggesting that fault sensitivity to stress increases in the years immediately before large earthquakes.

Two people stand on the edge of a road, looking at a straight crack, representing the surface trace of a fault, the cuts across the road and offsets its painted centerline.
Posted inFeatures

Striking Out into the Field to Track Slip on the Sumatran Fault

by Karen Lythgoe, Umar Muksin, Arifullah, Andrean Simanjuntak and Shengji Wei 16 March 202223 June 2022

An international team overcame many challenges, including from the COVID-19 pandemic, to deploy a dense seismic network along an understudied fault system that poses hazards to millions in Indonesia.

An inlet of Lake Toba in Indonesia, surrounded by tropical vegetation
Posted inNews

La vida después de una super erupción

by Danielle Beurteaux 9 November 202116 March 2022

Una vez que una erupción volcánica masiva termina, el sistema subyacente puede mantenerse activo por miles de años. Una nueva investigación vislumbra cómo funcionan los ciclos de super erupciones.

An inlet of Lake Toba in Indonesia, surrounded by tropical vegetation
Posted inNews

Life After a Supereruption

by Danielle Beurteaux 27 October 202116 March 2022

Once a massive volcanic eruption is finished, the underlying system can remain active for thousands of years. New research illuminates how supereruption cycles work.

Smoldering peat fire emits a hazy smoke over a tropical forest
Posted inNews

Starting (and Stopping) a Fire to Study It

by Michael Allen 10 February 202016 March 2022

Fire experiments on peatlands in Southeast Asia have identified previously unknown emissions patterns and could point to ways to detect these smoldering fires before they become too big to fight.

Man sifts through a tray of pottery sherds.
Posted inNews

Ceramics Trace a 14th Century Indonesian Tsunami

Katherine Kornei, Science Writer by Katherine Kornei 17 June 201916 March 2022

Archaeological evidence suggests that communities on the northern coast of Sumatra devastated by a tsunami roughly 600 years ago opted to rebuild in the same area, a process repeated in 2004.

Researchers use a new method to uncover evidence for gravity tectonics after the great Sumatra quake
Posted inResearch Spotlights

Evidence for Gravity Tectonics After the Great Sumatra Quake

by Terri Cook 27 March 201816 March 2022

A new method that applies structural geology principles to aftershock analyses suggests that gravity-driven motion may occur during part of the seismic cycle.

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.

A view of a Washington, D.C., skyline from the Potomac River at night. The Lincoln Memorial (at left) and the Washington Monument (at right) are lit against a purple sky. Over the water of the Potomac appear the text “#AGU24 coverage from Eos.”

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Editors' Highlights

Inferring River Discharge from Google Earth Images

20 May 202515 May 2025
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Decoding Crop Evapotranspiration

6 May 20256 May 2025
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