Advancing earthquake science worldwide
7 January 2020–The magnitude of the Great Lisbon Earthquake event, a historic and devastating earthquake and tsunami that struck Portugal on All Saints’ Day in 1755, may not be as high as previously estimated. In his study published in the Bulletin of the Seismological Society of America, Joao F. B. … Continue Reading »
3 December 2019–Each hair-thin glass fiber in a buried fiber optic cable contains tiny internal flaws—and that’s a good thing for scientists looking for new ways to collect seismic data in places from a busy urban downtown to a remote glacier. In Seismological Research Letters, California Institute of Technology seismologist … Continue Reading »
19 November 2019–Hand-dug trenches around Leigh Lake in Grand Teton National Park in Wyoming reveal evidence for a previously unknown surface-faulting earthquake in along the Teton Fault—one occurring about 10,000 years ago. Together with evidence from the site of a second earthquake that ruptured around 5,900 years ago, the findings … Continue Reading »
6 November 2019–The season that an earthquake occurs could affect the extent of ground failure and destruction that the event brings, according to a new look at two historical earthquakes that occurred about 100 years ago near Almaty, Kazakhstan. In a paper published in Seismological Research Letters, researchers conclude that … Continue Reading »
29 October 2019–By combining models of magnitude 9 to 9.2 earthquakes on the Cascadia Subduction Zone with geological evidence of past coastal changes, researchers have a better idea of what kind of megathrust seismic activity was behind the 1700 Cascadia earthquake. The analysis by Erin Wirth and Arthur Frankel of … Continue Reading »
22 October 2019–Major landslides triggered by the 1964 magnitude 9.2 Great Alaska earthquake responded to, but were not reactivated by, the magnitude 7.1 Anchorage earthquake that took place 30 November 2018, researchers concluded in a new study published in Seismological Research Letters. The shaking that accompanied the 2018 earthquake was … Continue Reading »