• About
  • Special Reports
  • Topics
    • Climate
    • Earth Science
    • Oceans
    • Space & Planets
    • Health & Ecosystems
    • Culture & Policy
    • Education & Careers
    • Opinions
  • Projects
    • ENGAGE
    • Third Pod from the Sun
    • Eos en Español
    • Eos 简体中文版
    • Print Archive
  • Newsletter
  • Submit to Eos
  • AGU.org
  • AGU Publications
    • AGU Journals
    • Editors’ Highlights
    • Editors’ Vox
  • Career Center
  • AGU Blogs
  • Join AGU
  • Give to AGU
  • About
  • Special Reports
  • Topics
    • Climate
    • Earth Science
    • Oceans
    • Space & Planets
    • Health & Ecosystems
    • Culture & Policy
    • Education & Careers
    • Opinions
  • Projects
    • ENGAGE
    • Third Pod from the Sun
    • Eos en Español
    • Eos 简体中文版
    • Print Archive
  • Newsletter
  • Submit to Eos
Skip to content
Eos

Eos

Science News by AGU

Sign Up for Newsletter

Earth's interior

Two maps showing locations of seismic arrays.
Posted inEditors' Highlights

Can Anelastic Attenuation of Oceanic Mantle be Reliably Measured?

by Fan-Chi Lin 26 October 202227 January 2023

A new study demonstrates that robust anelastic attenuation measurements can be made across ocean bottom seismic arrays at different locations using surface wave array analysis.

Three globes showing deep mantle structures in shades of red (hot structures) and blue (cold structures), with shading in each color family indicating depth. The first globe represents the mantle at 200 million years ago. The second shows the mantle at 100 million years ago. The third shows the present-day mantle. Superimposed atop the mantle structures are gray outlines of where a new model shows the continents were at each time. These globes show Asia and Australia on the left and the Pacific Ocean on the right.
Posted inNews

Billion-Year Rewind Tracks Supercontinents and Mantle Structures

by Alka Tripathy-Lang 12 October 202228 October 2022

Scientists have traced past pathways of tectonic plates back a billion years using computer models, with intriguing results. Incorporating geologic data as a check on model output, however, has proven tricky.

A wave washes ashore on a beach in Bali, Indonesia.
Posted inAGU News

Making Waves

by Caryl-Sue Micalizio 26 September 202227 September 2022

Sources of tsunamis are undersea, underground, and under the microscope in our October issue.

Photograph of a Global Seismographic Network station with mountains in the background.
Posted inEditors' Vox

Global Seismic Networks: Recording the Heartbeat of the Earth

by Adam T. Ringler 9 September 20229 September 2022

Global broadband seismographic networks have provided the science community with 30 years of data which is being used to understand the Earth.

Posted inResearch Spotlights

New Map of Proposed Mantle-Driven Topography Stirs the Pot

by Rebecca Dzombak 8 September 20228 September 2022

The role the deep Earth plays in creating topography is hotly debated. A new study uses subtle elevation changes around the globe as evidence that the mantle plays a key role in building topography.

Photo of Cerro Aconcagua, the highest mountain in the Americas
Posted inEditors' Vox

Old Igneous Rocks Hold the Key to Crustal Thickness Evolution

by Peter Luffi and Mihai Ducea 7 September 202229 September 2022

The chemical composition of orogenic igneous rocks and their zircons is sensitive to crustal thickness and can be used to quantify the evolution of Moho depths beneath continents back in time.

Red hot magma flows from within Earth to the surface at Hawaii’s Kīlauea volcano.
Posted inNews

Earth’s Lower Mantle Is Drier Than Previously Thought

by Saima May Sidik 11 August 202211 August 2022

Scientists have long known that the two layers of Earth’s mantle have different chemical compositions. Now, modeling shows that different water concentrations may keep them from mixing.

A map and 3 graphs showing the waveform fits for an earthquake.
Posted inEditors' Highlights

Western US Adjoint Tomography Reproduces Waveform Complexity

by Michael Bostock 22 July 202222 December 2022

Adjoint tomography employing 3D wavefield simulations for 72 well recorded regional earthquakes in the western U.S. yields spectacular improvements to waveform fits.

Close-up of an outcrop of an eclogite from the Monviso area of Italy showing a vug, or hole, containing red garnet crystals and green pyroxene crystals.
Posted inNews

Holey Eclogite!

by Alka Tripathy-Lang 1 July 202215 November 2022

Scientists have found holes filled with minerals that indicate fluid-filled pores exist many tens of kilometers below Earth’s surface. But no, The Core fans, you still can’t get amethyst-laden geodes in the mantle.

Image of a thin section of peridotite, taken under a microscope, with the pinks, greens, purples, and blues of olivine crystals of various sizes mixed with other, less brightly colored minerals
Posted inNews

Million or Billion? Narrowing Down the Age of Mantle Processes in New Guinea

by Alka Tripathy-Lang 16 May 202216 May 2022

Mantle rocks in Papua New Guinea contain curious geochemical signatures that scientists have traditionally interpreted as evidence of billions-year-old melting. New evidence suggests otherwise.

Posts navigation

1 2 3 … 11 Older posts

Features from AGU Journals

RESEARCH SPOTLIGHTS
JGR: Solid Earth
“New Tectonic Plate Model Could Improve Earthquake Risk Assessment”
By Morgan Rehnberg

EDITORS' HIGHLIGHTS
AGU Advances
“Eminently Complex – Climate Science and the 2021 Nobel Prize”
By Ana Barros

EDITORS' VOX
Perspectives of Earth and Space Scientists
“New Directions for Perspectives of Earth and Space Scientists”
By Michael Wysession


About Eos
Contact
Advertise

Submit
Career Center
Sitemap

© 2023 American Geophysical Union. All rights reserved. Proudly powered by Newspack by Automattic