Researchers analyzed infrasound signals from the Blue Origin explosion to confirm the time and location of the event and estimate its yield. The study demonstrates the potential of infrasound analysis in monitoring launch anomalies and provides valuable information on liquid methane rocket fuel.
Researchers found that sustained supershear earthquake ruptures produce stronger ground motion amplitudes and higher peak ground velocity up to 20 kilometers away from the fault. The duration of shaking also varies between subshear and supershear ruptures, with longer shaking near the fault due to a 'double punch' effect.
The Seismological Society of America's new journal, The Seismic Record, has achieved an exceptional impact factor of 5.3, ranking 6th globally. Its gold open-access model has expanded its international audience, with over 485,000 downloads to date.
Researchers reconstructed the 2025 Kamchatka earthquake's rupture evolution using two methods, finding it extended about 500 km from its epicenter. The rupture overlap with the 1952 magnitude 9.0 event suggests local structural features control megathrust margin ruptures.
Researchers used an AI model to detect Bryde's whale calls in seismic data collected in the South China Sea. The model achieved high accuracy, detecting calls over 96% of the time and identifying seasonal variations in whale behavior.
The study reveals a 250-kilometer-long linear cluster of about 1750 earthquakes marking the edge of the Yakutat microplate as it subducts beneath the North America plate. The new extent places it directly below the apex of curvature of the Alaska range and the Denali fault.
Researchers found that incorporating data from ocean bottom seismometers could improve ShakeAlert's detection time by 5-9 seconds. This technology has the potential to increase warning times for regional offshore earthquakes by up to 40 seconds.
The study demonstrates the potential for rapid deployment of fiber optic cable and Distributed Acoustic Sensing in environments where burying the cable isn't feasible, capturing aircraft speed and maneuvering.
A unique machine learning study identified over 60,000 earthquakes during the 2025 Santorini seismic crisis. The researchers found six times more earthquakes in the first 30 days compared to traditional monitoring, providing insights into fault networks and magma movement.
Researchers use global seismic networks and satellite observations to detect calving tidewater glaciers in Greenland. Large ice loss events are becoming more frequent, making it essential to understand their frequency, location, and factors leading to calving.
A new study suggests that a shallower Juan de Fuca slab beneath northern Oregon could increase estimated peak ground acceleration by 9-17% during Cascadia megathrust earthquakes. The research also identified a deep sedimentary basin beneath Tillamook, Oregon, which could amplify ground shaking and have been well-studied in other parts ...
The underground laboratory in Nevada has extensive faulting, with signs of rock displacement and slickensides observed throughout the facility. The faults' age is unknown, and their potential impact on seismic safety designs is unclear.
A new study has confirmed that much of the deep mantle deformation occurs where researchers suspect there may be deeply subducted tectonic slabs. The research used an unprecedented database of over 16 million seismograms to analyze seismic anisotropy and provide a global map of the phenomenon.
A magnitude 6.9 earthquake on the Island of Hawaiʻi in 2018 may have stalled episodes of periodic slow slip along a major fault underlying the volcano, according to scientists. The resulting 'stress shadow' could keep these events from happening again for decades.
A critically stressed fault has been identified in the Karoo Basin, which could be perturbed by potential shale gas exploration. The researchers used data from geophones and previously collected geophysical data to characterize and interpret the seismicity in the area.
Eduardo Miranda, a Stanford University professor, has been recognized for his pioneering work in developing new ground motion models and intensity measures. His research has significantly shaped seismic design provisions and emphasized the use of strong-motion data in both research and teaching.
Researchers previously estimated a powerful earthquake on Chalke Island in 1843 caused up to 600 deaths and a tsunami. However, a new study finds the event was likely a magnitude 5.93 earthquake with no deaths or tsunami reported at the time.
Ruth Harris has made outstanding contributions to the Seismological Society of America through her drive to create student presentation awards and support open access options. Her active participation in numerous committees has benefited nearly every SSA committee.
Kevin Milner, a research geophysicist at the USGS Geologic Hazards Science Center, has been awarded the Seismological Society of America's Charles F. Richter Early Career Award for his innovative work in seismic hazard analysis modeling and earthquake forecasting.
Lisa Wald, a renowned USGS scientist, has been honored by the Seismological Society of America for creating the Earthquake Hazards Program's information hub. Her groundbreaking work made a wealth of earthquake information accessible to everyone, from the general public to seismologists and governments.
The SSA will hold its annual meeting in Pasadena, California, featuring 53 technical sessions on topics such as earthquake early warning, seismic swarms, and nuclear explosion forensics. Working journalists can register to attend at no charge, gaining full access to presentations, poster sessions, and plenary talks.
Researchers studying seismic signals from Alaska's Prince William Sound have identified unusual impulsive events that increase in rate from summer to winter, before coming to an abrupt halt. These events may be linked to water freezing and thawing within rock cracks beneath nearby Cascade Glacier.
Sánz-Sesma's work on seismic wave propagation has made a significant impact on seismic hazard assessment and earthquake engineering. His research integrates theoretical rigor, numerical modeling, and empirical observation to advance our understanding of seismic wave phenomena.
A satellite deployed to measure ocean surface heights captured the first high-resolution track of a great subduction zone tsunami. The track shows an unexpectedly complex pattern of waves dispersing and scattering across the ocean basin.
Researchers used seismic sensors to identify the type of aircraft flying over Alaska, determining flight parameters and source frequencies. The study collected data from hundreds of flights, distinguishing between piston, turboprop, jet, and helicopter aircraft.
Hongfeng Yang has been appointed as the first deputy editor-in-chief of Seismological Research Letters (SRL), a journal published by the Seismological Society of America. Yang brings over a decade of editorial experience and fresh ideas to promote SRL's growth.
A new study in the Bulletin of the Seismological Society of America identifies 13 attributes of resilience in disaster response and preparedness. Agility and diversity are found to be crucial in both phases, while creativity and connectivity become vital during the response phase.
A new study reveals that a 1954 magnitude 6.5 earthquake in Northern California was likely triggered by the Cascadia subduction interface, challenging previous assumptions about its source.
A new report estimates that an earthquake early warning (EEW) system could provide at least 10 seconds of warning time for hazardous shaking in Alaska. Increasing the density and spacing of seismic stations can add up to 15 seconds, according to researchers. The study aims to help expand the US ShakeAlert system to Alaska.
Researchers successfully used seismic signals to detect the re-entry of a Hayabusa2 sample capsule and compare it with signals from natural meteoroids. The study found that intact objects had a distinct seismic signature compared to fragmented ones, providing valuable information on planetary defense strategies.
A recent large earthquake in Myanmar was recorded on CCTV camera footage, capturing the first direct visual evidence of curved fault slip. The video analysis revealed that the fault slipped 2.5 meters over 1.3 seconds, with a peak velocity of 3.2 meters per second, confirming previous inferences made from seismic waveforms.
Researchers analyzed seismic data to conclude that the 2025 Myanmar earthquake ruptured at supershear velocity, reaching speeds of up to 6 kilometers per second. The rupture occurred along a 480-kilometer stretch of the Sagaing Fault, causing significant damage and loss of life in Myanmar and neighboring countries.
A new analysis reveals that the Çöpler Gold Mine site had been slowly moving for at least four years prior to the fatal landslide, highlighting the need for continuous monitoring. The study suggests integrating infrastructure management with monitoring and rapid response mechanisms to avoid future disasters.
Advanced signal detectors have a low success rate detecting underground nuclear tests when seismic signals from nearby earthquakes overlap. Researchers found that even sophisticated multi-channel correlation detectors can only identify explosions with a 37% success rate, contrasting with a 97% success rate without earthquake interference.
Researchers analyzed sediment cores from four lakes in Guatemala, revealing the distinct direction of ground shaking during a magnitude 7.5 earthquake that devastated the country in 1976. The unusual pattern showed thicker deposits at the end of the fault rupture, indicating directional shaking.
A study by Christie Rowe and Alex Hatem found that faults are typically branching networks of fault strands, making them hundreds of meters wide. This suggests that significant parts of the broad array of fractures can be activated in a single earthquake.
Researchers are extending the earthquake history of northeastern North America by analyzing Native American place names and languages, revealing regular seismic activity and past large earthquakes. The study found that words for earthquake exist in several tribes' languages, suggesting a repetitive phenomenon.
Researchers analyzed data from Waze and police crash reports to study the effect of earthquakes on car crashes. While they found some slight increases in specific cases, most earthquakes had no significant impact on crash frequencies.
The March 28 magnitude 7.7 Myanmar earthquake ruptured over 400 kilometers of the Sagaing fault, causing severe ground shaking and infrastructure damage. Seismologists shared early analyses of the event's fault properties, highlighting a supershear rupture and widespread triggering by dynamic stresses.
Researchers deployed fiber optics to detect seismic signals of crevasses opening on a Swiss glacier, confirming the technology's potential in monitoring glacier stability. The team detected 951 icequakes with strong oscillations after the arrival of seismic surface waves.
Researchers found that strong ground acceleration within a stepover geometry can launch boulder-sized rocks briefly defying gravity. The study suggests stronger shaking in the area nearest to the fault around stepovers and complex fault geometries should be accounted for in ground motion predictions.
Researchers used hydroacoustic data to detect a possible submarine landslide in Trou Sans Fond Canyon offshore of Ivory Coast, which may have broken communications cables and disrupted internet traffic in March 2024. The detection could help identify threats to undersea infrastructure and inform engineering standards.
Researchers forecast shaking damage from crustal earthquake scenarios in Mexico City, with varying levels of damage depending on the region's underlying geology. The study modeled earthquakes up to magnitude 5.5 and found that one- to two-story buildings received the most damage, particularly in areas with soft lakebed sediments.
A new seismic study of Singapore reveals areas with increased risk of ground shaking, guiding urban growth and renewable energy development. The research identifies potential reservoirs for geothermal energy production and provides insights into the city-state's tectonic history.
Researchers used a remote seismic station to detect and characterize an earthquake swarm in American Samoa, producing a new catalog of events. The technique employed, combining single-station data with deep-learning models, can be useful in sparse monitoring regions.
If the Summerville phenomenon is an earthquake light, it might be that shallow earthquakes in the area released water-soluble gases like radon or methane, which were then ignited by static electricity or rock movement. Gas detectors could potentially test this hypothesis.
A team of researchers re-examined the aftershock sequence of the 2015 Bonin Islands earthquake and found no evidence for a record-breaking deep aftershock in the lower mantle. Instead, they discovered a distribution of aftershocks compatible with a 12-kilometer olivine sliver that sheds light on how deep earthquakes can occur.
Jeffrey Given received the 2025 Frank Press Public Service Award from the Seismological Society of America (SSA) for his work in developing seismic monitoring tools and supporting the Comprehensive Test Ban Treaty Organization. His expertise spanned fundamental seismology to software development and data management.
Mori received the award at the 2025 SSA Annual Meeting for his efforts in promoting SSA's international outreach, including a successful joint meeting with LACSC. He also supported the SSA Kanamori Fund to mentor and network early-career seismologists.
Zhu has made groundbreaking contributions to earthquake monitoring using deep-learning models like PhaseNet, DeepDenoiser, and GaMMA. His work has led to breakthroughs in seismic phase picking, denoising, and phase association.