Advancing earthquake science worldwide
24 April 2019–Using ground motions generated for a range of simulated magnitude 9 earthquakes in the Pacific Northwest, researchers are testing how well reinforced concrete walls might stand up under such seismic events. The walls may not fare so well, especially within the city of Seattle, said University of Washington … Continue Reading »
23 April 2019–NASA’s InSight mission has detected its first likely “quake” on Mars. At the opening of the 2019 SSA Annual Meeting, InSight Principal Investigator Bruce Banerdt of NASA’s Jet Propulsion Laboratory described the finding by the lander and discussed the hopeful future of Martian seismology. Watch the video of … Continue Reading »
22 April 2019–This year’s SSA Annual Meeting includes three joint sessions with the Seismological Society of Japan, continuing a long-standing partnership with SSJ and SSA members. The three session topics—Machine Learning in Seismology, Next Generation Earthquake Early Warning Systems: Advances, Innovations and Applications and The Science of Slow Earthquakes from … Continue Reading »
Earlier this year, Los Angeles became one of the first cities in the country to roll out ShakeAlert – a dedicated earthquake early warning system. Advanced warning of an earthquake has long been a goal for everyone from seismologists to local governments. Especially in cities like Los Angeles, located along … Continue Reading »
Five SSA student members have received Global Travel Grants to attend workshops or small meetings around the world. Farnaz Kamranzad (University of Tehran) will use the grant to attend the 11th International Workshop on Statistical Seismology in Hakone, Japan. Angela G. Marusiak (University of Maryland, College Park) will be traveling … Continue Reading »
[Read in English] 据地震研究快报(Seismological Research Letters, SRL)发表的一项最新研究 表明，去年 12 月和今年 1 月在中国四川省南部发生的两次中等强度地震 可能是由附近的水力压裂作业诱发的。 在 2018 年 12 月发生的 5.7 级和 2019 年 1 月发生的 5.3 级地震对四川盆地 南部地区的农家和其他建筑㐀成了严重破坏。尤其是 12 月份的地震，㐀 成 17 人受伤，导致直接经济损失约 5000 万人民币（约 750 万美元）。 位于四川盆地南部的长宁页岩气示范区块，自 2010 年启动评估性质的水 力压裂作业，并于 2014 年开始工厂化水平压裂。与此同时，该区地震频 度出现急剧上升趋势。 在美国，科学家们普遍认为石油和天然气产业的废水回注（油气提取过程 中伴生的水被注入深部岩层）是该区特别是俄克拉荷马州诱发地震的主要 原因。然而，越来越多的证据表明，在油气开采过程中通过高压注入水来 破碎岩层的水力压裂可能在俄亥俄州，俄克拉荷马州和加拿大西部的某些 地区诱发了中等规模的地震。 日本地质调查所 Xinglin … Continue Reading »