Advancing earthquake science worldwide
11 June 2019–A comprehensive catalog of earthquake sequences in Texas’s Fort Worth Basin, from 2008 to 2018, provides a closer look at how wastewater disposal from oil and gas exploration has changed the seismic landscape in the basin. In their report published in the Bulletin of the Seismological Society of … Continue Reading »
11 June 2019–New mechanical modeling of a network of active strike-slip faults in California’s Imperial Valley suggests the faults are continuously linked, from the southern San Andreas Fault through the Imperial Fault to the Cerro Prieto fault further to the south of the valley. Although more studies are needed to … Continue Reading »
26 April 2019–A day after the 30 November 2018 magnitude 7 earthquake in Anchorage, Alaska, U.S. Geological Survey scientists Robert Witter and Adrian Bender had taken to the skies. The researchers were surveying the region from a helicopter, looking for signs of ground failure from landslides to liquefaction. As Witter … Continue Reading »
26 April 2019–Using a dense sensor network that scanned the United States between 2003 and 2014, researchers have identified areas within the country marked by a persistent seismic signal caused by industrial processes. At the 2019 SSA Annual Meeting, Omar Marcillo of Los Alamos National Laboratory said that he and … Continue Reading »
26 April 2019–About 16.7 million years ago, the Columbia River flood basalt event covered much of eastern Oregon, parts of western Idaho and southern Washington state. The massive outpouring of basalt lava, covering about 63,000 square miles of the Pacific Northwest, is thought to have originated from the Yellowstone volcanic … Continue Reading »
26 April 2019–In the past decade scientists have been experimenting with metamaterials, artificial materials designed with periodic internal structures to give them properties not found in natural materials. Depending on their internal geometry and composition, researchers have found that they can control waves propagating through some of these materials, filtering … Continue Reading »