SSA 2019 Meeting Features Joint Sessions with SSJ

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 »

Damaging Sichuan Earthquakes Linked to Fracking Operations

[讀中文] 5 April 2019–Two moderate-sized earthquakes that struck the southern Sichuan Province of China last December and January were probably caused by nearby fracking operations, according to a new study published in Seismological Research Letters. The December 2018 magnitude 5.7 and the January 2019 magnitude 5.3 earthquakes in the South … Continue Reading »

SRL Publishes Focus Section on Machine Learning

1 March 2019–With a growing wealth of seismic data and computing power at their disposal, seismologists are increasingly turning to a discipline called machine learning to better understand and predict complicated patterns in earthquake activity. In a focus section published in the journal Seismological Research Letters, researchers describe how they … Continue Reading »

Tide Gauges Capture Tremor Episodes in Cascadia

15 February 2019–Hourly water level records collected from tide gauges can be used to measure land uplift caused by episodic tremor and slip of slow earthquakes in the Cascadia Subduction Zone, according to a new report in the Bulletin of the Seismological Society of America. Global Positioning System (GPS) data … Continue Reading »

Toppled Train Offers Insight into 1906 Earthquake

By mathematically modeling the movements of a locomotive that toppled from the tracks north of San Francisco during the city’s infamous 1906 earthquake, researchers have calculated a lower limit on the earthquake ground motion at the spot of the tipped train. Their report in the journal Seismological Research Letters concludes … Continue Reading »

2019 SSA Board of Directors Election Results

The Seismological Society of America held its Board of Directors election on Friday, 4 January 2019. The following nominees for Director were elected to a three-year term beginning in April 2019 at the SSA Annual Meeting in Seattle: Heather DeShon, Associate Professor, Southern Methodist University Heather DeShon’s principal fields of … Continue Reading »

Yousef Bozorgnia Selected as 2019 Bruce Bolt Medal Recipient

The Consortium of Strong Motion Observation Systems (COSMOS), Earthquake Engineering Research Institute (EERI) and SSA have selected Yousef Bozorgnia as the 2019 recipient of the Bruce Bolt Medal. Bozorgnia, a professor at the University of California, Los Angeles in both the Department of Civil and Environmental Engineering and the John … Continue Reading »

SRL Focus Section Investigates 2018 Hualien Earthquake Sequence

28 December 2018–A low-cost earthquake early warning system provided a map of expected ground shaking around the epicenter of February’s magnitude 6.4 Hualien earthquake within two minutes of the mainshock’s start, according to a new study by seismologists at the National Taiwan University, which deployed the system. The predicted shake … Continue Reading »

Annual Meeting Travel Grant Recipients Announced

SSA announced 21 student and international members will receive travel grants to attend the Annual Meeting in Seattle, to be held 23–26 April 2019. These travel grants are made possible by member contributions to the Kanamori Fund, the General Fund and the Student Travel Fund. Grant recipients receive complimentary conference registration and a cash stipend for transportation, food and lodging. The 21 recipients of … Continue Reading »

Allison Bent Named Editor-in-Chief of SRL

SAN FRANCISCO (3 December 2018) – The Seismological Society of America (SSA) announced today the appointment of Allison Bent, a research seismologist with Natural Resources Canada, as editor-in-chief of Seismological Research Letters (SRL). Accessible by all SSA members and available in more than 1,300 academic, government and corporate institutions worldwide, … Continue Reading »

Explosion, Collapse, Earthquakes: Analysis of North Korea’s 2017 Nuclear Test

26 September 2018–The epicenter of the 3 September 2017 nuclear test explosion in North Korea occurred about 3.6 kilometers northwest of the country’s first nuclear test in October 2006, according to a new high-precision analysis of the explosion and its aftermath. The study published in Seismological Research Letters by Lian-Feng Zhao … Continue Reading »

Seasonal Reservoir Filling in India Deforms Rock, May Trigger Earthquakes

25 September 2018–The seasonal filling and emptying of reservoirs in India can cause measurable deformation of the surrounding rock, reducing the strength of nearby faults and potentially triggering earthquakes, according to two new papers published in the Bulletin of the Seismological Society of America. Researchers in India used global positioning … Continue Reading »

SSA Board of Directors Election 2019

SSA announces the candidates for the 2019 election to add four members to the Board of Directors. The nominating committee, chaired by Jim Mori, confirmed a slate of six individuals to run for office. The committee included: Jim Mori (Kyoto University) Rachel Abercrombie (Boston University) Gail Atkinson (Western University) Ken … Continue Reading »

Urban Geophone Array Offers New Look at Los Angeles Basin

1 August 2018–Using an array of coffee-can sized geophones deployed for about a month in backyards, golf courses and public parks, researchers collected enough data to allow them to map the depth and shape of the San Gabriel and San Bernardino sedimentary basins of Los Angeles, California. Seismologists think these … Continue Reading »

SSA Announces 2018 Award Recipients

reid medal in box; Credit: SSA

14 June 2018–SSA is pleased to announce the recipients of several of the Society’s awards for 2018. The Harry Fielding Reid Medal, the Charles F. Richter Early Career Award and the Frank Press Public Service Award are among the highest honors conferred by the Society. The Reid Medal recipient is David M. … Continue Reading »

How Often Do Cascadia’s Megaquakes Occur?

16 May 2018–Devastating magnitude 8.0 to 9.0 megathrust earthquakes and accompanying tsunamis appear to have hit the U.S. Pacific Northwest and Southwest Canada about every 500 years on average. But some scientists think the recurrence interval between some of these large earthquakes may be shorter—along the lines of every 300 … Continue Reading »

How Big Can a Tsunami Be in the Caribbean?

16 May 2018–The 2004 Indian Ocean tsunami has researchers reevaluating whether a magnitude 9.0 megathrust earthquake and resulting tsunami might also be a likely risk for the Caribbean region, seismologists reported at the SSA 2018 Annual Meeting. “Before 2004, we thought an earthquake of about 8.0 was about right for … Continue Reading »

Monitoring Lava Lake Levels in Congo Volcano

15 May 2018–Nyiragongo in the Democratic Republic of the Congo is among the world’s most active volcanoes, with a persistent lava lake as one of its defining features. In a talk at the 2018 SSA Annual Meeting, Adrien Oth of the European Center for Geodynamics and Seismology discussed how he … Continue Reading »

SSA Global Travel Grant Recipients Announced

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 »

四川盆地南部的破坏性地震与水力压裂作业有关

[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 »