Notice about 2020 Annual Meeting

Dear SSA Community: Thank you for your patience while SSA leadership has closely monitored the novel coronavirus (COVID-19) situation. After careful deliberation, the SSA Board of Directors has decided to not convene the 2020 Annual Meeting. The health and safety of our community is our paramount concern. Guidance from the … Continue Reading »

At Work: Carl Tape

16 March 2020–There are two main pillars of seismology, Carl Tape says. “One is studying the structure of the earth or any medium—it could be a rock sample in the laboratory, he notes. “The other is studying source processes—an earthquake, a volcanic event, an event within a glacier, a nuclear … Continue Reading »

At Work: Marlon Ramos

Marlon Ramos

14 February 2020–As he pursued his master’s degree at Boise State University, Marlon Ramos was doing what he calls “traditional, active-source seismology,” interpreting seismic pictures of tsunami-producing faults near the Kodiak Island segment of the Alaska-Aleutian megathrust zone. “I had an interest in subduction zones and the very large earthquakes … Continue Reading »

Catalog Shows Complex Rupturing During 2019 Ridgecrest Sequence

22 January 2020–The 2019 Ridgecrest earthquake sequence, which startled nearby California residents over the 4 July holiday with magnitude 6.4 and magnitude 7.1 earthquakes, included 34,091 earthquakes overall, detailed in a high-resolution catalog created for the sequence. The catalog, developed by David Shelly at the U.S. Geological Survey in Golden, … Continue Reading »