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@seismosocam.bsky.socialSep 28, 2026, 3:00 AM

Wellington, New Zealand’s central business district experiences site amplification during earthquakes because it is built on a sedimentary basin. Scientists explore site amplification via 3D ground-motion simulations. Find out more, in #BSSA ⚒️

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Map showing the locations of the six earthquake sources and ground‐motion recording stations considered in this study. 
@seismosocam.bsky.socialSep 28, 2026, 12:00 AM

Erratum to Detailed Seismic Structure Beneath the Opak Fault Zone, Yogyakarta, Indonesia: Evidence for an Interconnected Fault System and Implications for Seismic Hazard #BSSA ⚒️

Erratum: buff.ly/pfP4s3S

Original paper: buff.ly/jMoqnKZ

@seismosocam.bsky.socialSep 26, 2026, 9:01 PM

Can GNSS-based early warning algorithms accurately estimate earthquake magnitudes? A new #BSSA paper presents a deep-learning model that detects earthquakes in GNSS data, allowing the waveforms to be identified. ⚒️

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Example of the rupture pattern for one of the FakeQuakes ruptures used to generate synthetic displacement waveforms for the training dataset. The triangular shapes represent individual subfaults. 
@seismosocam.bsky.socialSep 26, 2026, 3:00 AM

🌟 OPEN ACCESS 🌟 Scientists studying a newly published, high-resolution earthquake catalog for Nevada found that dynamic triggering can provide valuable insight into identifying critically stressed regions. #BSSA ⚒️

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The left panel shows teleseismic earthquakes (greater than or equal to magnitude 7.0) from January 1, 2008 to December 31, 2023 are represented by circles. The size of each circle corresponds to earthquake magnitude, whereas the fill color indicates the earthquake’s depth range. The study area in Nevada is highlighted by the green square, and the asterisks mark the nine teleseismic triggering events. The right panel shows local earthquakes (less than or equal to magnitude 5.0) in the study area that occurred within the same duration of teleseismic event mapped in left panel.
@seismosocam.bsky.socialSep 25, 2026, 3:03 PM

An Improved Random Forest‐Based Method for Automatically Selecting the High‐Pass Filter Cutoff Frequency of Strong‐Motion Records #BSSA ⚒️

What’s the best way to select a high-pass cutoff frequency so you can filter strong-motion data?

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Flowchart of the grey wolf optimizer–decision tree–recursive feature elimination with cross‐validation algorithm used for feature selection.
@seismosocam.bsky.socialSep 24, 2026, 9:01 PM

In a new #BSSA paper, scientists combine geospatial data with site-specific information to propose a regional site term for the Basin and Range province. ⚒️

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For the dataset in this study, the left panel shows the number of ground‐motion recordings by period and the right panel shows the number of stations by period after removing the unusable frequencies.
@seismosocam.bsky.socialSep 23, 2026, 3:00 AM

🌟 OPEN ACCESS 🌟 In a new #BSSA paper, a scientist explored the impact of stress drop on the relativity between local magnitude and moment magnitude for Australian earthquakes. ⚒️

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Stress drop plotted against local magnitude on the left panel and against the Brune moment magnitude on the right panel.
@seismosocam.bsky.socialSep 22, 2026, 9:01 PM

In a new #BSSA paper, scientists introduce a new framework for integrating event‐age probability density functions from multiple sites into a unified earthquake chronology. ⚒️

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MUSIC workflow for paleoseismic data integration.
@seismosocam.bsky.socialSep 22, 2026, 3:03 PM

Upper‐Crustal Seismic Anisotropy and Its Geological Controls in Southeastern Korea from Local Earthquake Data #BSSA ⚒️

Ongoing deformation or inherited fabric? A new study looks at this question in the upper crust of southeastern Korea.

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Ray path coverage (red lines) for measurements yielding reliable shear-wave splitting parameters.
@seismosocam.bsky.socialSep 20, 2026, 9:01 PM

In a new #BSSA paper, scientists present a study on Wellington, New Zealand’s site amplification, as predicted by 3D physics-based ground-motion simulations. ⚒️

buff.ly/lLUKU0t

Map showing the locations of the six earthquake sources and ground‐motion recording stations considered in this study. 
@seismosocam.bsky.socialSep 20, 2026, 3:00 AM

In a new #BSSA paper, scientists eveloped a new 3D crustal velocity model for the northwestern Himalaya and Siwalik basin. Scenario simulations of the 1905 Kangra earthquake reveal ground-motion amplification for the Siwalik basin. ⚒️

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Seismotectonic map for the study region, the northwestern Indian Himalaya and Siwalik basin (75.5°–79.5° E to 29.5°–33.5° N). The red lines mark primary faults. The blue represents the region of the Siwalik basin, the Siwalik Himalayas by the light‐green color, the Lesser Himalayas by the yellow color, and the Higher Himalayas by the gray color. The stars represent epicenters of past earthquakes from the India Meteorological Department catalog. The epicenter locations of the 1905 Kangra and 1975 Kinnaur earthquakes are shown as red stars. The inset globe on the top left shows the study region.
@seismosocam.bsky.socialSep 18, 2026, 9:01 PM

🌟 OPEN ACCESS 🌟 In a new #BSSA paper, scientists analyzed a newly published, high-resolution earthquake catalog for Nevada to identify local seismicity that was dynamically triggered by teleseismic events. ⚒️

buff.ly/Lin6X8Q

The left panel shows teleseismic earthquakes (greater than or equal to magnitude 7.0) from January 1, 2008 to December 31, 2023 are represented by circles. The size of each circle corresponds to earthquake magnitude, whereas the fill color indicates the earthquake’s depth range. The study area in Nevada is highlighted by the green square, and the asterisks mark the nine teleseismic triggering events. The right panel shows local earthquakes (less than or equal to magnitude 5.0) in the study area that occurred within the same duration of teleseismic event mapped in left panel.
@seismosocam.bsky.socialSep 18, 2026, 3:02 PM

Detecting Earthquakes in Noisy Real‐Time GNSS Data With Deep Learning for Improved PGD Magnitude Estimation #BSSA ⚒️

A deep-learning method that uses GNSS and seismic data may help scientists quickly find earthquakes.

buff.ly/zVgvpB7

Example of the rupture pattern for one of the FakeQuakes ruptures used to generate synthetic displacement waveforms for the training dataset. The triangular shapes represent individual subfaults. 
@seismosocam.bsky.socialSep 16, 2026, 5:03 PM

📣CALL FOR PAPERS📣#BSSA is soliciting papers for aSpecial Issue on Advances in Optical Seismology: Methods and Technologies 👀

Deadline for Submission: 01 February 2027 ⚒️

buff.ly/oDOASJB

@seismosocam.bsky.socialSep 16, 2026, 3:02 PM

Geospatial Site Amplification Model with Geotechnical Adjustments for the Basin and Range Province of the Western United States #BSSA ⚒️

A new model provides a linear geospatial site term for the Basin and Range.

buff.ly/7HYVmFN

For the dataset in this study, the left panel shows the number of ground‐motion recordings by period and the right panel shows the number of stations by period after removing the unusable frequencies.
@seismosocam.bsky.socialSep 16, 2026, 3:01 AM

🌟 OPEN ACCESS 🌟 Earthquake Point‐Source Integrated Code, or EPIC, is an algorithm used in earthquake early warning. A new study shows that it is robust enough to be applied in Alaska, although it can be improved with respect to deep earthquakes. #BSSA ⚒️

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Initial magnitude error as a function of station density for all matched Alaska test suite events. 
@seismosocam.bsky.socialSep 15, 2026, 9:01 PM

🌟 OPEN ACCESS 🌟 What’s the relationship between local magnitude, moment magnitude, and stress drop for Australian earthquakes? Find out, in #BSSA. ⚒️

buff.ly/1nibY6N

Stress drop plotted against local magnitude on the left panel and against the Brune moment magnitude on the right panel.
@seismosocam.bsky.socialSep 15, 2026, 1:03 PM

SSA's volunteer #reviewers help us further our mission of advancing #earthquake science worldwide. Thanks for sharing your time and expertise with our journals! #PeerReview #PRW2026
#BSSA #SRL #TSR ⚒️

@seismosocam.bsky.socialSep 14, 2026, 3:02 PM

A Probabilistic Framework for Correlation Assessment and Combination of Multisite Paleoseismic Data: Evidence for Accelerated Strain Release Along the Altyn Tagh Fault #BSSA ⚒️

MUSIC to our ears — check out this new open-source toolbox!

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MUSIC workflow for paleoseismic data integration.
@seismosocam.bsky.socialSep 13, 2026, 3:00 AM

In a new #BSSA paper, scientists apply a spectral amplitude decomposition technique to discriminate small earthquakes from explosions and mining-induced seismicity in Utah. ⚒️

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Overview map of the Utah region, with events and stations used in this study. 
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