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 »
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 »
25 August 2021–The Codex Telleriano Remensis, created in the 16th century in Mexico, depicts earthquakes in pictograms that are the first written evidence of earthquakes in the Americas in pre-Hispanic times, according to a pair of researchers who have systematically studied the country’s historical earthquakes. Gerardo Suárez of the Universidad … Continue Reading »
[Lire en français] 8 July 2021–Seismic waves passing through the ground near Longyearbyen in the Adventdalen valley, Svalbard, Norway have been slowing down steadily over the past three years, most likely due to permafrost warming in the Arctic valley. The trend, reported in a new study published in Seismological Research … Continue Reading »