Animation In a new study, published in the journal Nature, an international team of scientists provides the first conclusive evidence directly linking deep Earth’s water cycle and its expressions with magmatic productivity and earthquake activity. Water (H2O) and other volatiles (e.g. CO2 and sulfur) that are cycled through the deep Earth […]

Illustration of the natural fluid injection process that triggered the Cahuilla swarm. Credit: CalTech Natural Fluid Injections Triggered Cahuilla Earthquake Swarm Machine-learning algorithm helps geoscientists create a 3-D picture of a fault zone, generating new insight into seismic processes. A naturally occurring injection of underground fluids drove a four-year-long earthquake […]

Earthquakes that occur more than 300 kilometers below the Earth are poorly understood. UC Davis geophysicist Magali Billen modeled stresses in a sinking tectonic plate at a subduction zone. In this video, yellow regions on the sinking plate show where deep earthquakes are most likely to occur, because the plate […]

A new study of Earth’s inner core used seismic data from repeating earthquakes, called doublets, to find that refracted waves, blue, rather than reflected waves, purple, change over time — providing the best evidence yet that Earth’s inner core is rotating. Credit: Michael Vincent Exhaustive seismic data from repeating earthquakes […]

At the regional level and worldwide, the occurrence of large shallow earthquakes appears to follow a mathematical pattern called the Devil’s Staircase, where clusters of earthquake events are separated by long but irregular intervals of seismic quiet. The finding published in the Bulletin of the Seismological Society of America differs from the […]

No casualties or infrastructure damage were reported after a 6.3-magnitude earthquake struck Indonesia’s island of Bali (pictured February 2019) A strong earthquake jolted Indonesia’s holiday island of Bali early on Thursday, but no tsunami warning was issued. The quake struck at 1:45 am (1745 GMT) with an epicenter 255 kilometeres […]

MIT researchers have used a neural network to identify low-frequency seismic waves hidden in earthquake data. The technique may help scientists more accurately map the Earth’s interior. Credit: Christine Daniloff, MIT Machine learning technique may help scientists more accurately map vast underground geologic structures. Over the last century, scientists have […]