An artist’s rendering of undersea earthquake waves. Credit: Caltech Using soundwaves cast from seafloor earthquakes, researchers demonstrate a new take on a largely abandoned way to measure ocean warming worldwide — seismic ocean thermometry. The method, which they tested in the East Indian Ocean and where they uncovered a decadal […]

A swarm of 91 earthquakes rattled the Yellowstone National Park region in just 24 hours on Thursday, according to the United States Geological Survey. The quakes trembled southwest of Yellowstone Lake between Heart Lake and West Thumb. Although the area is one of the most seismically active regions in the […]

Rock-melting forces occurring much deeper in the Earth than previously understood appear to drive tremors along a notorious segment of California’s San Andreas Fault, according to new USC research that helps explain how quakes happen. The study from the emergent field of earthquake physics looks at temblor mechanics from the bottom up, […]

Franz Josef Glacier in New Zealand. Credit: Vaido Otsar Running through the heart of New Zealand’s glacier country is the infamous Alpine Fault. The 600 kilometer-long (370 mile) faultline on the boundary of the Eurasian and Pacific tectonic plates beneath the country’s South Island produces infrequent but significant earthquakes. In the line […]

Reconstructed image of the fracture zone. Credit: Hicks et al. Scientists observed a ‘boomerang’ earthquake along Atlantic Ocean fault line, providing clues about how they could cause devastation on land. Earthquakes occur when rocks suddenly break on a fault – a boundary between two blocks or plates. During large earthquakes, […]

Credit: CC0 Public Domain A new study suggests that last year’s Ridgecrest earthquakes increased the chance of a large earthquake on California’s San Andreas fault. The study, published in the Bulletin of the Seismological Society of America on Monday, says there is now a 2.3% chance of an earthquake of magnitude 7.5 […]

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 […]