Advancing earthquake science worldwide
11 November 2022–Caltech Hall, a 55-year-old nine-story reinforced concrete building on the Caltech campus, has been getting structurally stiffer over the past 20 years, according to a new report published in The Seismic Record. Previous work by seismologists and engineers had documented the building softening—that is, decreasing in stiffness—from its … Continue Reading »
26 August 2022–Using machine learning to sift through a decade’s worth of seismic data, researchers have identified hundreds of thousands of microearthquakes along some previously unknown fault structures in Oklahoma and Kansas. The newly identified microearthquakes allowed the seismologists to map and measure earthquake clusters in the region, which has … Continue Reading »
6 July 2022–Researchers used a fiber optic cable on the ice cap of an Icelandic subglacial volcano to detect low-frequency volcanic tremor, suggesting this technology could be useful in monitoring other ice-covered volcano systems. Their research published in The Seismic Record indicates that the floating ice cap, part of the … Continue Reading »
22 April 2022–The seismometer placed on Mars by NASA’s InSight lander has recorded its two largest seismic events to date: a magnitude 4.2 and a magnitude 4.1 marsquake. The pair are the first recorded events to occur on the planet’s far side from the lander and are five times stronger … Continue Reading »
14 March 2022–Christopher DuRoss of the U.S. Geological Survey, Golden, Adam Ringler of the U.S. Geological Survey, Albuquerque, and Vaclav Vavrycuk of the Institute of Geophysics in the Czech Republic, are the recipients of SSA’s 2021 Outstanding Reviewer awards. In recent interviews, the recipients agreed that reviewing is an essential … Continue Reading »
9 March 2022–Papers on distributed acoustic sensing (DAS) and machine learning techniques were among the topics covered by the top 20 most-downloaded papers published by the SSA family of journals in 2021. The ranking of all papers noted below reflect download numbers through 31 December 2021: Y.J. Tan et al., … Continue Reading »