“Beach Ball” Representations Calculated for U.S. Underground Nuclear Tests Can Aid Monitoring

Nevada National Security Site

21 September 2021–Researchers at Lawrence Livermore National Laboratory have calculated moment tensors for 130 underground nuclear and 10 chemical test explosions that took place at the Nevada National Security test site. Often represented graphically to resemble a striped “beach ball,” moment tensors “are essentially a mathematical concept that’s used to … Continue Reading »

At Work: Songqiao “Shawn” Wei

Shawn Wei

20 September 2021–Growing up in the mountains in China, Songqiao “Shawn” Wei never saw the ocean until he was 23, flying over the Pacific from Beijing to San Francisco for an American Geophysical Union meeting. “But when I was a kid I liked the sea, from books and movies, and … Continue Reading »

SSA Receives $1.6 Million: Largest Gift in Society History

The generosity of Clarence Allen (1925-2021), SSA’s 41st president, will bring career-changing opportunities to countless scientists in our community. The Seismological Society of America (SSA) announced today that it has received a gift of nearly $1.6 million, a bequest from the estate of renowned seismologist Clarence Allen. The gift from … Continue Reading »

Pictograms Are First Written Accounts of Earthquakes in Pre-Hispanic Mexico

T-R codex Mexico 16th century 640x358px

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 »

Global Travel Grant Recipients Announced

SSA logo teal graphic

SSA awarded Shanna Chu, Danielle Lindsay and Christina Tsarsitalidou with travel grants to present their research at technical conferences later this Fall. The grants are part of the Global Travel Grant program, which was established to support the careers of student and early-career members. Two student recipients are heading to … Continue Reading »