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seismology

World map showing topography as well as bathymetry, or the depth of landforms below sea level
Posted inNews

A New, Underground Atlas of Subduction Zones

by J. Besl 28 August 202331 August 2023

Submap merges graphic design with geodynamics, providing a fast, free, and user-friendly resource to map subduction zones.

A fault segment offset an agricultural field during the Kahramanmaraş earthquake sequence.
Posted inFeatures

The 2023 Türkiye-Syria Earthquakes Shifted Stress in the Crust

by Erin Martin-Jones 24 August 202329 August 2023

In February, a devastating magnitude 7.8 earthquake struck the eastern Mediterranean, triggering a second major jolt and a cascade of aftershocks.

Photo taken from a helicopter of a broken road in a desert landscape
Posted inNews

Global Earthquake Analysis Seeks Elusive Foreshock Signal

by Nathaniel Scharping 15 August 202315 August 2023

Spotting foreshocks for what they are could help seismologists forecast large earthquakes.

Una imagen de satélite de una masa continental con parches cafés y verdes. Al centro hay una nube de humo con una línea naranja brillante.
Posted inNews

La tercera es la vencida para el Fagradalsfjall de Islandia

Katherine Kornei, Science Writer by Katherine Kornei 28 July 20234 August 2023

La región volcánica que hizo erupción en 2021 y 2022 después de más de 7 siglos de estar dormida, lo está haciendo de nuevo.

Illustration of the Earth's internal structure.
Posted inEditors' Vox

Digging Deep into Interactions Between the Core and Mantle

by Takashi Nakagawa, Taku Tsuchiya, Madhusoodhan Satish-Kumar and George Helffrich 24 July 20234 August 2023

A new book presents major advances in our understanding of core-mantle interaction and co-evolution, and showcases technological developments improving our insights into deep Earth processes.

A satellite image of a light brown landmass with patches of green. In the center is a cloud of smoke with a bright orange streak.
Posted inNews

Third Time’s the Charm for Iceland’s Fagradalsfjall

Katherine Kornei, Science Writer by Katherine Kornei 19 July 202331 July 2023

The volcanic region, which erupted in both 2021 and 2022 after more than 7 centuries of dormancy, is at it again.

Diagram from the paper.
Posted inEditors' Highlights

A New Workflow to Image the 3D Structure of Active Faults

by Patricia Martínez-Garzón 22 June 202322 June 2023

A new approach to illuminate 3D fault structures using earthquake hypocenters may improve our understanding of earthquake propagation and arrest across step overs.

Three-dimensional wireframe representation of Earth with a red spotted sphere in the center. The continents are shown in turquoise, and yellow lines radiate from a point on the bottom left continent.
Posted inNews

Mounds of Ancient Ocean Floor May Be Hiding Deep in Earth

Tim Hornyak, Science Writer by Tim Hornyak 13 June 20234 August 2023

A mysterious seismic feature at the bottom of Earth’s mantle is more widespread than previously thought.

Drawing of a magma reservoir and conduits below Kīlauea volcano
Posted inScience Updates

Earth Is Noisy. Why Should Its Data Be Silent?

by Leif Karlstrom, Ben Holtzman, Anna Barth, Josh Crozier and Arthur Paté 9 June 20236 June 2024

Combining visual and sonic representations of data can make science more accessible and help reveal subtle details. The recent decade-long eruption of Hawaii’s Kīlauea Volcano offers a prime example.

Diagram from the paper.
Posted inEditors' Highlights

Are Low-Frequency Earthquakes Just Slow Slip?

by Marcos Moreno 5 June 202331 May 2023

Tests of seismic attenuation show fluid saturation and high pressure near a seismic source reduce high-frequency content, challenging the idea of slow slip as the cause of low-frequency earthquakes.

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A view of a bridge, with the New Orleans skyline visible in the distance between the bridge and the water. A purple tint, a teal curved line representing a river, and the text “#AGU25 coverage from Eos” overlie the photo.

Features from AGU Publications

Research Spotlights

Watershed Sustainability Project Centers Place-Based Research

4 December 20254 December 2025
Editors' Highlights

Changes in Slab Dip Cause Rapid Changes in Plate Motion

4 December 20252 December 2025
Editors' Vox

Hydrothermal Circulation and Its Impact on the Earth System

3 December 20253 December 2025
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