Page 3 - Solid Earth News Today

The study was published in the Journal of Geophysical Research: Solid Earth, AGU’s journal dedicated to research on the planet.

Aftershocks follow large earthquakes — sometimes for weeks, other times for decades. But in the U.S., some areas may be experiencing shocks from centuries-old events.

An estimated 30 percent of earthquakes in these U.S. states may result from seismic activity from before the American Civil War.

Earthquakes today in the U.S. could be left over from seismic activity in the 1800s, scientists have found. In a new study, published in the Journal of…

AGU is excited to welcome new Editors-in-Chief for seven of our journals in 2024, including the founding Editor of JGR: Machine Learning and Computation.

Seismic images of Earth’s interior have revealed two continent-sized anomalies with low seismic velocities, known as the large low-velocity provinces (LLVPs), in the lowermost mantle1. The LLVPs are often interpreted as intrinsically dense heterogeneities that are compositionally distinct from the surrounding mantle2. Here we show that LLVPs may represent buried relics of Theia mantle material (TMM) that was preserved in proto-Earth’s mantle after the Moon-forming giant impact3. Our ...

Neptune-sized planets exhibit a wide range of compositions and densities, depending on factors related to their formation and evolution history, such as the distance from their host stars and atmospheric escape processes. They can vary from relatively low-density planets with thick hydrogen–helium atmospheres1,2 to higher-density planets with a substantial amount of water or a rocky interior with a thinner atmosphere, such as HD 95338 b (ref. 3), TOI-849 b (ref.&#82...

Planets grow in rotating disks of dust and gas around forming stars, some of which can subsequently collide in giant impacts after the gas component is removed from the disk1–3. Monitoring programmes with the warm Spitzer mission have recorded substantial and rapid changes in mid-infrared output for several stars, interpreted as variations in the surface area of warm, dusty material ejected by planetary-scale collisions and heated by the central star: for example, NGC 2354–ID8 (refs....

Oregon State University researchers will play key roles in a new multi-institution earthquake research center dedicated to the study of the Pacific Northwest’s Cascadia Subduction...

It has been nearly a week since the devastating 6.8 earthquake shook Morocco to its core killing more than 2,900 people and leaving more than 3,000 others injured, as rescuers are continuing to...