By accounting for magnitude uncertainties and variability in completeness, scientists improved estimates of seismic parameters. #BSSA ⚒️

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A new #BSSA focuses on the age and fragility of 13 precariously balanced rocks in Massachusetts, New Hampshire, and southwestern Maine. These fragile features are mostly erratic boulders left behind as the Laurentide ice sheet retreated between 13,000 and 18,000 years ago. (2/3)

🌟OPEN ACCESS🌟Ground Motions from Finite Faults with Unknown Geometry #BSSA ⚒️

In the minutes and hours after an earthquake, ground-motion intensity metrics are critical for emergency response. How can these metrics' calculations be improved?

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🌟OPEN ACCESS🌟If you deal with the “mode-kissing” phenomenon in your surface-wave dispersion curve computations (thanks, low velocity layers!) then check out this new #BSSA paper. ⚒️

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In a new #BSSA paper, scientists use a Bayesian framework to estimate b-value and seismic rate while accounting for magnitude uncertainties. ⚒️

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Use of Precariously Balanced Rocks to Constrain Postglacial Earthquake Magnitudes in New England, United States #BSSA ⚒️

Fragile geologic features help scientists evaluate the USGS National Seismic Hazard Model.

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In a new #BSSA paper, a scientist uses more than 2,400 profiles of shear wave velocity to see if that helps with using shallow S-wave velocity to estimate time-averaged shear-wave velocity over 30 meters, Vs30. ⚒️

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🌟OPEN ACCESS🌟 In a new #BSSA paper, scientists release an open-source tool called QEDispInv for work with dispersion curves. ⚒️

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Long‐Term b Value and Seismic Rate from Earthquake Catalogs with Time‐Varying Completeness and Uncertain Magnitudes #BSSA ⚒️

Can seismologists account for magnitude uncertainties when calculating b-value and seismic rate? (Yes)

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🌟OPEN ACCESS🌟In a new #BSSA paper, scientists present a retrospective looking at the 50 years since the 1976 magnitude 7.5 Motagua earthquake in Guatemala that killed about 23,000 people. ⚒️

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What happens when expanding the original dataset used in the Boore (2004) method for estimating Vs30 from shallow velocity? Find out, in #BSSA ⚒️

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🌟OPEN ACCESS🌟Surface‐Wave Dispersion Curve Computation and Inversion: A Framework Integrating Quadratic Extrema Interpolation and Randomized Layering with Multiple Initial Models #BSSA ⚒️

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On the Southern Korean Peninsula, at what depth do earthquakes nucleated? A new #BSSA study found event focal depths to be bimodally distributed, with clusters between 5-12 kilometers and 12-22 kilometers.⚒️

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🌟OPEN ACCESS🌟In 1976, the magnitude 7.5 Motagua earthquake in Guatemala killed about 23,000 people. What have we learned in the 50 years since? A new #BSSA retrospective considers this question. ⚒️

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Vs30 Estimation from Shallow Vs Profiles #BSSA ⚒️

A scientist revises the original Boore (2004) method for using shallow velocity to estimate Vs30 (time averaged shear wave velocity over 30 meters).

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A new #BSSA paper explores ground-motion models produced in different ways for the San Francisco Bay Area. ⚒️

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In a new #BSSA paper, scientists found that the Southern Korean Peninsula features a bimodal focal depth distribution of earthquakes — 5-12 kilometers and 12-22 kilometers. ⚒️

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🌟OPEN ACCESS🌟A Fiftieth Year Retrospective on the 1976 Mw 7.5 Motagua Earthquake in Guatemala #BSSA ⚒️

This earthquake resulted in about 23,000 deaths and highlighted a major plate boundary. What have we learned in the 50 years since?

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🌟OPEN ACCESS🌟EQS-denoiser is a new deep-learning based model trained on earthquake and noise from Switzerland. Find out how it compares to other models in #BSSA. ⚒️

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In a new #BSSA paper, scientists create an empirical nonergodic ground-motion model for earthquakes in the San Francisco Bay Area, based on about 5,000 recordings from earthquakes less than or equal to magnitude 4.0. ⚒️

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Please join us in welcoming Stefano Parolai as the next Editor-in-Chief for the Bulletin of the #Seismological Society of America #BSSA! Learn more about Stefano and his goals for the journal buff.ly/1asx5kv

Constraining the Earthquake Focal Depth Distribution in the Southern Korean Peninsula #BSSA ⚒️

At what depth do earthquakes tend to nucleate in the Southern Korean Peninsula? Scientists find a bimodal depth distribution.

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How do you account for site-effects without Vs30? There are a few ways, and a new #BSSA paper presents a ground-motion model based on geospatial site terms in the Central and Eastern U.S. ⚒️

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📢CALL FOR PAPERS📢 #BSSA is soliciting manuscripts for a Special Issue on Quantifying the Long-term Prehistoric Earthquake Record: Advances and Applications ⚒️

Deadline for Submission: 1 June 2026

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🌟OPEN ACCESS🌟In a new #BSSA paper, scientists present a new deep-learning based denoising model trained on earthquake and noise signals from Switzerland. They call it: EQS-denoiser. ⚒️

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A Nonergodic Ground‐Motion Model for the San Francisco Bay Area for Small‐Magnitude Earthquakes #BSSA ⚒️

Scientists create a ground-motion model for the San Francisco Bay Area to help test the extrapolation of AI-based models.

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In a new #BSSA paper, scientists study rotational ground motions associated with the 2023 magnitude 7.8 Kahramanmaraş–Pazarcık earthquake. What do their findings mean for design code? ⚒️

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In a new #BSSA paper, scientists developed a new site term for ground motion models in the Central and Eastern U.S. by looking at a geospatial dataset of potential predictor variables. ⚒️

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The vertical component of earthquakes can damage structures like bridges on highways, dams, and nuclear power plants. A #BSSA paper presents a model for estimating vertical ground-motion in central and eastern North America. ⚒️

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🌟OPEN ACCESS🌟Toward Operational Earthquake Seismogram Denoising #BSSA ⚒️

A new denoising deep learning model outperforms deep learning pickers in signal detection and improves phase picking.

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