A magnitude 8.2 earthquake was “hidden” within a magnitude 7.5 earthquake in 2021, sending a mysterious tsunami around the world, according to a new study in Geophysical Research Letters. Credit: Zhe Jia and AGU

Hidden magnitude-8.2 earthquake source of mysterious 2021 global tsunami

A series of earthquakes and aftershocks shook the Ridgecrest area in Southern California in 2019. Distributed acoustic sensing (DAS) using fiber-optic cables enables high-resolution subsurface imaging, which can explain the observed site amplification of earthquake shaking. Credit: Yang et al., 2022

Fiber-optic cables can produce high-resolution underground maps

The edges of Earth’s tectonic plates, centered over the Pacific Ocean. Colors indicate whether plates are scraping past (yellow), diving under (green), or pulling away (red) from one another. Study site near New Zealand marks the location of a newly forming subduction zone. Credit: Brandon Shuck/University of Texas Institute for Geophysics

How does a major subduction zone get started? It may begin...

Images of different fossil remains of Abditosaurus kuehnei at the Orcau-1 site (a), the excavation process (b and c) and the neck after fossil preparation (d).

Large new titanosaurian dinosaur from the Pyrenees

A view of the graben, which emerged near the Holuhraun lava field in Iceland. The western boundary of the graben is seen in the foreground, in the center-right portion of the image, where the land begins to dip down. Credit: Stephan Kolzenburg

As tectonic plates pull apart, what drives the formation of rifts?

True body shape of the ancient Megalodon remains a mystery. (Phillip Sternes/UCR/DePaul)

New research bites holes into theories about Megalodons

Traces of paleotsunami at the lowland of the Ube River, Noda Village. The Sanriku Coast has been hit by tsunamis throughout its history, leaving behind tsunami deposits. Credit: Tohoku University

New analysis of tsunami deposits paints a clearer picture of Sanriku’s...

Erratus Sperare - the new missing link fossil

New fossil reveals origin of arthropod breathing system

Clay soil sticks together. Photo by Lynn Ketchum.

Like diamonds, clay soils are forever

Rapid erosion of supermountains released large amounts of nutrients, which were eventually carried into the oceans. Photo: Peter Campbell

Supermountains controlled the evolution of life on Earth

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