Publications
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A decade of shaking in the Garden City: The dynamics of preparedness, perceptions, and beliefs in Canterbury, New Zealand, and implications for earthquake information A decade of shaking in the Garden City: The dynamics of preparedness, perceptions, and beliefs in Canterbury, New Zealand, and implications for earthquake information
This study explored earthquake preparedness over time - before, during, and 10 years after the Canterbury Earthquake Sequence (CES) in Aotearoa New Zealand (NZ). Surveys of Canterbury residents were conducted in 2009, 2013 and again in 2021, using variables derived from Community Engagement Theory (CET). The surveys measured earthquake perceptions and beliefs, participation and...
Authors
Julia S. Becker, Emma E. Hudson-Doyle, Lauren Vinnell, Sara K. McBride, Douglas Paton, David A. Johnston
Evaluating the impact of uncertainty in ground motion forecasts for post-earthquake impact modeling applications Evaluating the impact of uncertainty in ground motion forecasts for post-earthquake impact modeling applications
The US Geological Survey’s (USGS) ShakeMap system provides a rapid characterization of strong ground shaking in areas directly affected by an earthquake. This study focuses on studying the aggregate effects of macroseismic shaking estimates from ShakeMap, expressed in terms of modified Mercalli intensity (MMI), when accounting for the uncertainty in forecasted ground motions. We use a...
Authors
Davis T. Engler, Kishor S. Jaiswal, Mahadevan Ganesh
The solar cycle, geology, and geoelectric hazards for power grids The solar cycle, geology, and geoelectric hazards for power grids
When sunspots are large and numerous, intense magnetic storms are likely to occur on the Earth. Magnetic storms can generate electric fields in the Earth, and these fields can, in turn, interfere with electric power transmission grids that are grounded at the Earth’s surface. Across the contiguous United States, geoelectric hazards are highest in the Upper Midwest and in the East. These...
Authors
Jeffrey J. Love, Steven Sobieszczyk, E. Joshua Rigler, Anna Kelbert, Kristen A. Lewis
A rockslide-generated tsunami in a Greenland fjord rang Earth for 9 days A rockslide-generated tsunami in a Greenland fjord rang Earth for 9 days
Climate change is increasingly predisposing polar regions to large landslides. Tsunamigenic landslides have occurred recently in Greenland (Kalaallit Nunaat), but none have been reported from the eastern fjords. In September 2023, we detected the start of a 9-day-long, global 10.88-millihertz (92-second) monochromatic very-long-period (VLP) seismic signal, originating from East Greenland...
Authors
Kristian Svennevig, Steven P. Hicks, Thomas Forbriger, Thomas Lecocq, Ruedi Widmer-Schnidrig, Anne Mangeney, Clément Hibert, Niels J. Korsgaard, Antoine S. Lucas, Claudio Satriano, Robert Anthony, Aurélien Mordret, Sven Schippkus, Søren Rysgaard, Wieter Boone, Steven Gibbons, Kristen L. Cook, Sylfest Glimsdal, Finn Løvholt, Koen Van Noten, Jelle D. Assink, Alexis Marboeuf, Anthony Lomax, Kris Vanneste, Taka’aki Taira, Matteo Spagnolo, Raphael de Plaen, Paula Koelemeijer, Carl Ebeling, Andrea Cannata, William D. Hardcourt, David G. Cornwell, Corentin Caudron, Piero Poli, Pascal Bernard, Eric Larose, Eleonore Stutzmann, Peter H. Voss, Bjorn Lund, Flavio Cannavo, Manuel J. Castro-Díaz, Esteban J. Chaves, Trine Dahl-Jensen, Nicolas De Pinho Dias, Aline Deprez, Roeland Develter, Douglas Dreger, Laslo G. Evers, Enrique D. Fernández-Nieto, Ana M.G. Ferreira, Gareth J. Funning, Alice-Agnes Gabriel, Marc Hendrickx, Alan L. Kafka, Marie Keiding, Jeffrey T. Kerby, Shfaqat A. Khan, Andreas Kjær Dideriksen, Oliver D. Lamb, Tine B. Larsen, Bradley Lipovsky, Ikha Magdalena, Jean-Philippe Malet, Mikkel Myrup, Luis Rivera, Eugenio Ruiz-Castillo, Selina Wetter, Bastien Wirtz
Geologic input databases for the 2025 Puerto Rico – U.S. Virgin Islands National Seismic Hazard Model update: Crustal faults component Geologic input databases for the 2025 Puerto Rico – U.S. Virgin Islands National Seismic Hazard Model update: Crustal faults component
The last National Seismic Hazard Model (NSHM) for Puerto Rico and the U.S. Virgin Islands (PRVI) was published in 2003. In advance of the 2025 PRVI NSHM update, we created three geologic input databases to summarize new onshore and offshore fault source information in the northern Caribbean region between 62°–70° W and 16°–21° N. These databases, of fault sections, fault‐zone polygons...
Authors
Jessica A. Thompson Jobe, Richard W. Briggs, Uri S. ten Brink, Thomas L. Pratt, K. Stephen Hughes, Alexandra Elise Hatem, Christopher B. DuRoss, Nadine G. Reitman, Julie A. Herrick, Sylvia R. Nicovich, Camille Collett, Katherine M. Scharer, Stephen B. DeLong
Evaluation of an open earthquake early warning system in Mexico, and laboratory tests of their sensors Evaluation of an open earthquake early warning system in Mexico, and laboratory tests of their sensors
Microelectromechanical system (MEMS) accelerometers are useful for seismological and engineering applications because of their ability to record unsaturated large seismic signals. Recent advances in MEMS technologies enable the design of instruments with improved capabilities that also allow the recording of small signals. As a result, MEMS can be useful across a broad dynamic range and...
Authors
Vaclav Kuna, Adam T. Ringler, Diego Melgar
Preliminary observations of the April 5th, 2024, Mw4.8 New Jersey earthquake Preliminary observations of the April 5th, 2024, Mw4.8 New Jersey earthquake
On 5 April 2024, 10:23 a.m. local time, a moment magnitude 4.8 earthquake struck Tewksbury Township, New Jersey, about 65 km west of New York City. Millions of people from Virginia to Maine and beyond felt the ground shaking, resulting in the largest number (>180,000) of U.S. Geological Survey (USGS) “Did You Feel It?” reports of any earthquake. A team deployed by the Geotechnical...
Authors
Oliver S. Boyd, William D. Barnhart, James Bourke, Martin C. Chapman, Paul S. Earle, Guo-chin Dino Huang, Jessica A. Thompson Jobe, Won-Young Kim, Frederick Link, Mairi Maclean Litherland, Andrew Lloyd, Maureen Long, Sara K. McBride, Andrew J. Michael, Walter D. Mooney, Gregory Moutain, Sissy Nikolaou, Alexandros Savvaidas, Felix Waldhauser, Cecily J. Wolfe, Clara Yoon
Framework for mapping liquefaction hazard–Targeted design ground motions Framework for mapping liquefaction hazard–Targeted design ground motions
Liquefaction-induced ground failure poses substantial challenges to geotechnical earthquake engineering design. Current approaches for designing against liquefaction hazards, as specified in most seismic provisions, focus on estimating a liquefaction factor of safety (𝐹𝑆𝐿) and typically characterize earthquake loading using design parameters based on probabilistic or deterministic...
Authors
Andrew James Makdisi, Steven L. Kramer
The value of hyperparameter optimization in phase-picking neural networks The value of hyperparameter optimization in phase-picking neural networks
The effectiveness of using neural networks for picking seismic phase arrival times has been demonstrated through several case studies, and seismic monitoring programs are starting to adopt the technology into their workflows. However, published models were designed and trained using rather arbitrary choices of hyperparameters, limiting their performance. In this study, we use phase picks...
Authors
Yongsoo Park, David R. Shelly
A benchmark dataset and workflow for landslide susceptibility zonation A benchmark dataset and workflow for landslide susceptibility zonation
Landslide susceptibility shows the spatial likelihood of landslide occurrence in a specific geographical area and is a relevant tool for mitigating the impact of landslides worldwide. As such, it is the subject of countless scientific studies. Many methods exist for generating a susceptibility map, mostly falling under the definition of statistical or machine learning. These models try...
Authors
Massimiliano Alvioli, Marco Loche, Liesbet Jacobs, Carlos H. Grohmann, Minu Treesa Abraham, Kunal Gupta, Neelima Satyam, Gianvito Scaringi, Txomin Bornaetxea, Mauro Rossi, Ivan Marchesini, Luigi Lombardo, Mateo Moreno, Stefan Steger, Corrado Camera, Greta Bajni, Guruh Samodra, Erwin Eko Wahyudi, Nanang Susyanto, Marko Sincic, Sanja Bernat Gazibara, Flavius Sirbu, Jewgenij Torizin, Nick Schussler, Benjamin B. Mirus, Jacob Bryson Woodard, Hector Aguilera, Jhonatan Steven Rivera-Rivera
Neotectonic mapping of Puerto Rico Neotectonic mapping of Puerto Rico
Puerto Rico is part of the Puerto Rico-Virgin Islands microplate, along the Caribbean–North American plate boundary between the Puerto Rico trench subduction zone and the Muertos Trough incipient subduction zone. Despite recent seismicity and geodetically constrained deformation of ~3 mm/yr of left-lateral shear across the island, Quaternary fault locations remain largely uncertain...
Authors
Jessica A. Thompson Jobe, Richard W. Briggs, K. Stephen Hughes, J. Joyce, Ryan D. Gold, Shannon A. Mahan, Harrison J. Gray, Laura E. Strickland
Parsimonious high-resolution landslide susceptibility modeling at continental scales Parsimonious high-resolution landslide susceptibility modeling at continental scales
Landslide susceptibility maps are fundamental tools for risk reduction, but the coarse resolution of current continental-scale models is insufficient for local application. Complex relations between topographic and environmental attributes characterizing landslide susceptibility at local scales are not transferrable across areas without landslide data. Existing maps with multiple...
Authors
Benjamin B. Mirus, Gina Marie Belair, Nathan J. Wood, Jeanne M. Jones, Sabrina N. Martinez