Advancing earthquake science worldwide
13 November 2024–Wastewater injection resulting from oil and gas production in Oklahoma caused a dramatic rise in seismic activity in the state between 2009 and 2015. But regulatory efforts to backfill some injection wells with cement and reduce injection volumes have been effective in lowering the state’s induced earthquake rate, … Continue Reading »
1 October 2024–The magnitude 4.8 Tewksbury earthquake surprised millions of people on the U.S. East Coast who felt the shaking from this largest instrumentally recorded earthquake in New Jersey since 1900. But researchers noted something else unusual about the earthquake: why did so many people 40 miles away in New … Continue Reading »
25 September 2024–The five largest continental transform earthquakes since 2000 all originated on a branch of the main fault—and two researchers predict that the next great earthquake of this type will also get its start on a branch or splay fault. Last year’s magnitude 7.8 Pazarcık earthquake in Türkiye was … Continue Reading »
10 September 2024–Five boulders, delivered by glacier and balancing delicately on rocky pedestals in northern New York and Vermont, can help define long-term maximum shaking intensity of earthquakes in the region. Seismologists examine the fragility of precariously balanced rocks, or PBRs, to determine the intensity of shaking would be needed … Continue Reading »
29 August 2024–About 21 million years ago the Yap Trench collided with a thick piece of ocean crust called the Caroline Plateau. But is the Yap Trench still an active subduction zone? And why does the Yap Trench look a little different from its subduction zone neighbors in the western … Continue Reading »
15 August 2024–Data recorded by seismic instrumentation in buildings where ground motion is weak to moderate can help engineers better understand structural responses to earthquakes, according to a new paper published in the Bulletin of the Seismological Society of America. Philippe Guéguen and Ariana Astorga at Université Grenoble Alpes – … Continue Reading »