Advancing earthquake science worldwide
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 »
2 March 2022–Researchers were able to observe stress changes before and during an earthquake induced by hydraulic fracturing in Alberta, Canada, with the help of a phenomenon called seismic anisotropy. Seismic anisotropy refers to changes in the velocity of seismic waves dependent on the “fabric” of the rocks that the … Continue Reading »
9 February 2022–Field surveys conducted in the days after the 7 January 2020 Puerto Rico earthquake documented more than 300 landslides and severe liquefaction in southern coastal regions, according to a new study by U.S. Geological Survey and University of Puerto Rico Mayagüez researchers. The ground failure that resulted from … Continue Reading »
28 January 2022–Stress transferred through the crust and upper mantle after the 1964 Great Alaska Earthquake may have been enough to trigger the 2018 Gulf of Alaska earthquake, according to a new study published in the Bulletin of the Seismological Society of America. The model developed by Luyuan Huang at … Continue Reading »
15 December 2021–Just days after a 2020 magnitude 5.1 earthquake in Tangshan, China, researchers turned nearly 8 kilometers of unused telecom fiber optic cable into a seismic array that detected dozens of aftershocks that were missed by permanent seismic stations. The rapid deployment of the distributed acoustic sensing (DAS) technology … Continue Reading »
3 December 2021–Three-dimensional fault models are generally more accurate than two-dimensional line models at sending ground shaking alerts to the correct areas as part of an earthquake early warning system, according to a new study. The benefits of 3D fault models vary depending on the fault style (a strike slip … Continue Reading »