Advancing earthquake science worldwide
5 September 2019–The eastern Pacific Ocean margin stretching from Mexico to southern Chile offers seismologists a “natural laboratory” in which to study and test ideas about the processes of subduction zones, which are associated with some of the world’s largest recorded earthquakes in the region, as well as phenomena such … Continue Reading »
18 June 2019–The unusual appearance of deep-sea fish like the oarfish or slender ribbonfish in Japanese shallow waters does not mean that an earthquake is about to occur, according to a new statistical analysis. The study published in the Bulletin of the Seismological Society of America contradicts long-held Japanese folklore … Continue Reading »
12 June 2019–Researchers who took a closer look at a 1995 tsunami in the Gulf of Elat-Aqaba, at the northeastern tip of the Red Sea, say that the gulf’s surrounding countries should prepare for future tsunami hazards in the economically developing vital region. A team of scientists led by Amos … Continue Reading »
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 »
[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 »