iiinova — where your digital self keeps evolving

Seismological Society of America @seismosocam.bsky.social · 5h

A Robust Time‐Domain Approach for Measuring Moment Magnitudes Using Peak Displacement Amplitude #BSSA ⚒️ Check out this modified time-domain approach to determine earthquake moment magnitude! buff.ly/ufxGUI1

Spectral ratios of time‐domain three‐component S‐wave spectral amplitudes to time‐domain vertical amplitudes. Thick‐solid lines at each center frequency represent the medians, and the dashed line indicates their overall median.

000

Seismological Society of America @seismosocam.bsky.social · 17h

In a new #BSSA paper, a team of scientists developed a deep-learning model that detects earthquakes in GNSS data. They used the Ridgecrest, California earthquake sequence as a case study. ⚒️ 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.

010

Seismological Society of America @seismosocam.bsky.social · 23h

In a new #BSSA paper, scientists present an automatic high‐pass cutoff frequency selection method that helps with the denoising process — important for the use of strong-motion data. ⚒️ buff.ly/7E9Bv0M

Flowchart of the grey wolf optimizer–decision tree–recursive feature elimination with cross‐validation algorithm used for feature selection.

000

Seismological Society of America @seismosocam.bsky.social · 03/10/2026

🌟 OPEN ACCESS 🌟 Digitizer Suite: The Albuquerque Seismological Laboratory Digitizer Testing Suite #SRL ⚒️ A Java software package provides several algorithms to verify the performance of digitizers. buff.ly/gBftxRp

Example of a datalogger test interface box before final wiring.

011

Seismological Society of America @seismosocam.bsky.social · 03/10/2026

🌟 OPEN ACCESS 🌟 What can we learn about the link between avalanches and meteorology? A new #SRL study looks to distributed acoustic data to address this question, and more. ⚒️ buff.ly/9J7RQiZ

Map of distributed acoustic sensing deployment along Milford Road connecting Milford Sound (Piopiotahi) to Te Anau, in the South Island of Aotearoa New Zealand.

041

Seismological Society of America @seismosocam.bsky.social · 03/10/2026

In a new #SRL paper, scientists present an interactive visualization and processing tool based on the PyQt framework; the tool integrates classical seismic data processing workflows with functions specific to distributed acoustic sensing. ⚒️ buff.ly/RQGfZn1

010

Seismological Society of America @seismosocam.bsky.social · 02/10/2026

What’s the relationship between foreshocks and mainshock when it comes triggering? A new #SRL study looks at the 2022 Chihshang earthquake sequence to explore this question. ⚒️ buff.ly/xsD3531

Seismotectonic setting of the 2022 Chihshang earthquake sequence.

010

Seismological Society of America @seismosocam.bsky.social · 02/10/2026

🌟 OPEN ACCESS 🌟 How to Determine an Earthquake Rate Budget? A Comparison of Geodetic, Geologic, and Seismologic Moment Rates #BSSA ⚒️ Updated datasets help scientists tackle questions related to earthquake rates and seismic hazard analyses. buff.ly/SFVoI8R

Geologic data used in National Seismic Hazard Model (NSHM) across model years. Percentages plotted on the y axis are relative to the western United States portion of the 2023 U.S. NSHM.

000

Seismological Society of America @seismosocam.bsky.social · 02/10/2026

Sparse ground-motion data? No problem! A new #BSSA study demonstrates how combining geospatial data with site-specific information can result in a useful regional site term for the Basin and Range region. ⚒️ buff.ly/4oV8m5T

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.

100

Seismological Society of America @seismosocam.bsky.social · 02/10/2026

The Utah FORGE is an observatory for studying geothermal energy. A new #SRL study presents a distributed acoustic sensing dataset from Utah FORGE’s EGS stimulation operations in April of 2024. ⚒️ buff.ly/PTKmRaI

Rate of temperature change derived from distributed temperature sensing data showing the progressive damage experienced by the fiber optic cable in well 16B.

020

Seismological Society of America @seismosocam.bsky.social · 01/10/2026

🌟 OPEN ACCESS 🌟 In a new #SRL paper, scientists use extensive numerical simulations to evaluate the feasibility of earthquake early warning at the Northeastern Italy Thrust Faults Observatory, also called NITRO. ⚒️ buff.ly/UuO9aP2

Context map for Northeastern Italy Thrust Faults Observatory near‐fault observatory (NITRO‐NFO).

010

Seismological Society of America @seismosocam.bsky.social · 01/10/2026

TL‐BiRNN‐Pick: An End‐to‐End Automated Microseismic Monitoring Framework for Underground Mines via Transfer Learning #SRL ⚒️ Detecting small earthquakes can be difficult in mining environments. A new framework might help. buff.ly/meFr1Nl

Mine seismic monitoring system PAL monitoring flowchart.

000

Seismological Society of America @seismosocam.bsky.social · 01/10/2026

What could be better than PLUM? How about DATES? If you’re wondering what in the (seismology) world we’re talking about, check out this new #SRL paper about earthquake early warning! ⚒️ buff.ly/qIf2rUR

Comparison of three methods discussed in the paper.

000

Seismological Society of America @seismosocam.bsky.social · 01/10/2026

In a new #SRL paper, scientists propose Transformer for Earthquake Alert with Distance‐awareness (TREAD)—a Transformer‐based regional earthquake early warning model that incorporates regressing distances from seismic stations to target locations where ground motion is predicted. ⚒️ buff.ly/GxfHcpf

Architecture of the proposed Transformer for Earthquake Alert with Distance‐awareness (TREAD) framework.

020

Seismological Society of America @seismosocam.bsky.social · 30/09/2026

In a new #BSSA paper, scientists explored the upper-crustal seismic anisotropy of the southeastern Korean Peninsula using data from the Gyeongju Hi‐density Broadband Seismic Network. They address whether anisotropy reflects inherited fabrics or ongoing deformation. ⚒️ buff.ly/pt1YEpk

Ray path coverage (red lines) for measurements yielding reliable shear-wave splitting parameters.

000

Seismological Society of America @seismosocam.bsky.social · 30/09/2026

Foreshocks and Nucleation Process of the 2018 Ms 4.8 and 5.2 Chengduo Doublet, China #SRL ⚒️ Scientists found that a combination of aseismic slip and cascading stress-triggering likely influenced this sequence. buff.ly/Jzj9yrZ

Magnitude calibration of earthquakes detected in this study.

000

Seismological Society of America @seismosocam.bsky.social · 30/09/2026

Paleoseismic Records of the North Liuleng Shan Fault: Implications for Intraplate Seismic Hazard in the Northern Shanxi Graben, China #BSSA ⚒️ Trench excavations unearthed the two most recent surface-rupturing earthquakes. buff.ly/IjX4NmJ

Topographic and geomorphic features of the Gongjiawan road cut (GJW‐RC) site. Top panel shows a hillshade map overlain by a 2-meter interval topographic contour based on Structure‐from‐Motion‐derived digital elevation model showing fault traces (red triangles). Bottom panel shows an interpretive map with the offset landforms near the GJW‐RC.

021

Seismological Society of America @seismosocam.bsky.social · 30/09/2026

Multisite integrated chronologies, or MUSIC, is an open‐source toolbox for correlation assessment and combination of paleoseismic data. Find out more, including an example from the Altyn Tagh Fault, in #BSSA. ⚒️ buff.ly/TwVt5nb

012

Seismological Society of America @seismosocam.bsky.social · 29/09/2026

3D dynamic rupture simulations provide insights into the rupture process along the Dingmucuo Fault of the Southern Tibetan rift system. Find out more, in #SRL ⚒️ buff.ly/hVjH1BN

031

Seismological Society of America @seismosocam.bsky.social · 29/09/2026

In a new #SRL paper, scientists deployed 309 short-period nodal seismometers across the middle segment of the Longriba fault zone from April to May of 2024. This zone marks the transition from eastward extrusion to the rigid Yangtze block. For findings, check out the paper. ⚒️ buff.ly/xl0Ms7y

Examples of ambient noise cross‐correlation functions.

020

Seismological Society of America @seismosocam.bsky.social · 29/09/2026

Attn‐Loc: Deep Learning for Microseismic Event Location via Transformer Encoder #SRL ⚒️ Microseismic event location is important for seismic monitoring of hydraulic fracturing, geothermal development, geological CO2 storage, and mining activity. Attn-Loc could improve that task. buff.ly/MHtHbPF

Schematic diagram of the Attn‐Loc‐based localization workflow.

010

Seismological Society of America @seismosocam.bsky.social · 29/09/2026

🌟 OPEN ACCESS 🌟 In a new #SRL paper, scientists present the design, implementation and initial performance of a regional-scale distributed acoustic sensing monitoring network that’s integrated within the operational framework of the OGS Seismological Research Center in NE Italy. ⚒️ buff.ly/nz2Q7dz

Spatial distribution of manholes along the first segment of the Palmanova fiber‐optic route. Manholes provide access points for inspection and maintenance and host spare fiber coils used to accommodate installation and repair requirements.

000

Seismological Society of America @seismosocam.bsky.social · 29/09/2026

What are the potential advantages and limitations of using urban dark fiber distributed acoustic sensing for earthquake monitoring? A new #SRL paper explores this question with a DAS array and co-located broadband seismic array in Dallas, Texas. ⚒️ buff.ly/60RrfSL

010

Seismological Society of America @seismosocam.bsky.social · 28/09/2026

🌟 OPEN ACCESS 🌟 Tandem is an open-source volumetric software package that addresses challenges related to sequences of earthquake and aseismic slip. Find out more, in #SRL ⚒️ buff.ly/5KBvVFp

Weak scaling of an elastostatic solve, on Frontera (TACC, U.S.A.), using polynomial degree 4 with varying computational mesh sizes (annotated in red, in million elements).

000

Seismological Society of America @seismosocam.bsky.social · 28/09/2026

🌟 OPEN ACCESS 🌟 Multitimescale Anomalies of the Precursory Scale Increase (Ψ) Prior to the 1975 Ms 7.3 Haicheng Earthquake #BSSA ⚒️ What insights can the 1975 earthquake provide regarding statistically significant anomalies prior to the event? buff.ly/R2orBRM

001

Seismological Society of America @seismosocam.bsky.social · 28/09/2026

🌟 OPEN ACCESS 🌟 In a new #SRL paper, scientists investigate the applicability of mHVSR at a regional scale by analyzing the structure of the Guadalquivir River sedimentary basin in southern Spain. ⚒️ buff.ly/TJFLGWB

Interpretation of the mHVSR analysis results.

021

Seismological Society of America @seismosocam.bsky.social · 28/09/2026

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 ⚒️ buff.ly/lLUKU0t

Map showing the locations of the six earthquake sources and ground‐motion recording stations considered in this study.

060

Seismological Society of America @seismosocam.bsky.social · 27/09/2026

In a new #SRL paper, scientists use seismic data from five long-running stations with a recording period of 20 years or so to investigate Borneo’s layered anisotropic structure in the upper mantle. Their goal is to link anisotropy to past tectonic events. ⚒️ buff.ly/0Bue2RI

Event locations used in the teleseismic XKS (PKS, SKKS, and SKS, collectively referred to as XKS) splitting analysis. The color of each circle indicates the number of splitting measurements from events within that circle, with blue for one, yellow for two, and red for three.

010

Seismological Society of America @seismosocam.bsky.social · 27/09/2026

Preface to the Focus Section on Measuring and Monitoring Seismic Instrumentation #SRL ⚒️ This focus section presents papers that describe procedures, techniques and results related to calibration and performance of seismic instrumentation — both in the field, and in the laboratory. buff.ly/iypF4Sm

Front cover of journal SRL showing a measuring tape curling across an orange-yellow background.

110

Seismological Society of America @seismosocam.bsky.social · 27/09/2026

SIN‐Polarity: A Novel Algorithm for Automatic Identification of P‐Wave First‐Motion Polarity Based on a Sine‐Wave Template #SRL ⚒️ A new way to select P-wave first-motion polarity could be helpful for focal mechanism calculation. buff.ly/nC3IJDl

Logic flowchart and schematic illustration of SIN‐Polarity.

020

Seismological Society of America @seismosocam.bsky.social · 27/09/2026

🌟 OPEN ACCESS 🌟 New research in #SRL found focused on the 2024 magnitude 7.3 Hualien, Taiwan earthquake that structures off the shores of Hualien accommodate a substantial portion of plate convergence. ⚒️ buff.ly/5p6I4tp

Trade‐off curve (left panel) and coseismic slip model (right panel) of the 2024 event.

010

Seismological Society of America @seismosocam.bsky.social · 27/09/2026

In a new #SRL paper, scientists compiled a high-resolution catalog of 23,748 events recorded over three months. This catalog captures the evolution of the magnitude 7.3 Hualien earthquake sequence. ⚒️ buff.ly/Vnmgl9F

Tectonic setting and seismicity of eastern Taiwan.

020

Seismological Society of America @seismosocam.bsky.social · 26/09/2026

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. ⚒️ buff.ly/zVgvpB7

050

Seismological Society of America @seismosocam.bsky.social · 26/09/2026

Constructing a High‐Resolution Aftershock Catalog for the 2017 Mw 8.2 Tehuantepec Earthquake Sequence Using a Machine Learning–Based Workflow #SRL ⚒️ The resulting catalog contains 11,374 relocated earthquakes — the most comprehensive published dataset for this sequence. buff.ly/31RCdQD

Map of seismic station locations and relocated seismicity in the 2017 Tehuantepec aftershock region.

000

Seismological Society of America @seismosocam.bsky.social · 26/09/2026

🌟 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 ⚒️ 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.

011

Seismological Society of America @seismosocam.bsky.social · 25/09/2026

🌟 OPEN ACCESS 🌟 In a new #SRL paper, scientists transformed a “dark” (unused) telecommunication fiber cable running along Milford Road in Fiordland, Aotearoa New Zealand into a DAS array to monitor avalanches during the 2024 austral winter and spring season. ⚒️ buff.ly/9J7RQiZ

092

Seismological Society of America @seismosocam.bsky.social · 25/09/2026

Introducing the PyQt framework: a tool that integrates classical seismic data processing workflows with functions specific to distributed acoustic sensing. #SRL ⚒️ buff.ly/RQGfZn1

050

Seismological Society of America @seismosocam.bsky.social · 25/09/2026

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? buff.ly/7E9Bv0M

011

Seismological Society of America @seismosocam.bsky.social · 25/09/2026

Can real-time monitoring via seismic stations help scientists track when sustained winds turn to serious storm? A new #SRL paper considers how to delineate between storms, windy weather, and calm using microseismic noise. ⚒️ buff.ly/43DBDK6

Track of Tropical Storm Soulik and configuration of the seismic observation system. Top panel shows storm track and location of the microarray along Hainan Island. Circles along the track represent storm positions, with colors (blue to red) indicating temporal progression and circle sizes scaled to maximum wind speed near the center. The black box outlines the microarray area, with an upper‐right inset providing a zoomed view. The bottom left panel shows the initial cross‐shaped deployment of six short‐period seismometers (red triangles) from September 14, 2024 to October 5, 2024. The bottom right panel shows the reconfigured linear array parallel to the coastline from October 6-15, 2024 (red triangles: station locations).

010

Seismological Society of America @seismosocam.bsky.social · 24/09/2026

In a new #SRL paper, scientists present a distributed acoustic sensing dataset recorded during stimulation operations at Utah FORGE’s EGS site in April of 2024. ⚒️ buff.ly/PTKmRaI

020

Seismological Society of America @seismosocam.bsky.social · 24/09/2026

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. ⚒️ buff.ly/4oV8m5T

011

Seismological Society of America @seismosocam.bsky.social · 24/09/2026

Cascading Ruptures of the 2022 Chihshang Earthquake Sequence Constrained by Seismic and InSAR Data #SRL ⚒️ Multiple datasets help scientists explore the 2022 Taitung County, Taiwan earthquake sequence. buff.ly/xsD3531

010

Seismological Society of America @seismosocam.bsky.social · 24/09/2026

Catalina Morales-Yáñez, Javier Ojeda and Gonzalo Montalva used their SSA Community #Grant to support the #DAS Workshop Concepción 2026, a three-day training at Universidad de Concepción to build national DAS expertise. Learn more here! buff.ly/dngL7ab ⚒️

000

Seismological Society of America @seismosocam.bsky.social · 24/09/2026

#SRL introduces DoubleF — a fast and flexible phase association and earthquake location method based on adaptive Sobol sampling. ⚒️ buff.ly/wakZh5p

The iterative process of the DoubleF algorithm. The first five panels on the top row illustrate five iterations in the longitude–latitude plane, and next five panels on the bottom row show the corresponding convergence in the depth–time plane.

010

Seismological Society of America @seismosocam.bsky.social · 23/09/2026

In a new #SRL paper, scientists build on the PLUM method and present the Delaunay‐based adaptive technique for earthquake station selection, or DATES, method. DATES adaptively selects reference stations based on local station density and azimuthal coverage. ⚒️ buff.ly/FXf0Ddn

000

Seismological Society of America @seismosocam.bsky.social · 23/09/2026

How can you integrate distance awareness into the earthquake early warning modeling process? A new #SRL paper introduces TREAD — Transformer for Earthquake Alert with Distance‐awareness. ⚒️ buff.ly/GxfHcpf

000

Seismological Society of America @seismosocam.bsky.social · 23/09/2026

🌟 OPEN ACCESS 🌟 Assessing Earthquake Early Warning Feasibility at the NITRO Near‐Fault Observatory Using Numerical and Offline Simulations #SRL ⚒️ Earthquake early warning at the Northeastern Italy Thrust Faults Observatory? Maybe, suggests a new study. buff.ly/UuO9aP2

000

Seismological Society of America @seismosocam.bsky.social · 23/09/2026

SSA Community #Grants helped Patrick Chindandali and @djshillington.bsky.social Donna Shillington of Northern Arizona University provide a week of hands-on #seismic hazard training to scientists, students and technicians in southern #Malawi's active rift zone. Learn more here!: buff.ly/dngL7ab ⚒️

000

Seismological Society of America @seismosocam.bsky.social · 23/09/2026

🌟 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. ⚒️ buff.ly/1nibY6N

Stress drop plotted against local magnitude on the left panel and against the Brune moment magnitude on the right panel.

020