Lake Deposits Reveal Directional Shaking During Devastating 1976 Guatemala Earthquake

17 April 2025— Sediment cores drawn from four lakes in Guatemala record the distinct direction that ground shaking traveled during a 1976 magnitude 7.5 earthquake that devastated the country, according to researchers at the Seismological Society of America’s Annual Meeting. The earthquake, which killed more than 23,000 people and left … Continue Reading »

How Well Do Mapped Tectonic Faults Predict the Location of Surface Rupture in the Next Earthquake?

zoom image of fault mapping class

16 April 2025—In places where earthquakes rupture the Earth’s surface, scientists often try to predict the location of these future fault ruptures based on the geological fault traces created in past earthquakes. But how accurate are these fault traces in predicting the next rupture location? At the Seismological Society of … Continue Reading »