Publications
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PRISM Software: Processing and Review Interface for Strong‐Motion Data PRISM Software: Processing and Review Interface for Strong‐Motion Data
A continually increasing number of high‐quality digital strong‐motion records from stations of the National Strong Motion Project (NSMP) of the U.S. Geological Survey, as well as data from regional seismic networks within the United States, calls for automated processing of strong‐motion records with human review limited to selected significant or flagged records. The NSMP has developed...
Authors
Jeanne M. Jones, Erol Kalkan, Christopher D. Stephens, Peter Ng
Global Positioning System data collection, processing, and analysis conducted by the U.S. Geological Survey Earthquake Hazards Program Global Positioning System data collection, processing, and analysis conducted by the U.S. Geological Survey Earthquake Hazards Program
The U.S. Geological Survey Earthquake Science Center collects and processes Global Positioning System (GPS) data throughout the western United States to measure crustal deformation related to earthquakes and tectonic processes as part of a long‐term program of research and monitoring. Here, we outline data collection procedures and present the GPS dataset built through repeated temporary
Authors
Jessica R. Murray, Jerry L. Svarc
A paleoseismic transect across the northwestern Basin and Range Province, northwestern Nevada and northeastern California, USA A paleoseismic transect across the northwestern Basin and Range Province, northwestern Nevada and northeastern California, USA
We use new and existing data to compile a record of ∼18 latest Quaternary large-magnitude surface-rupturing earthquakes on 7 fault zones in the northwestern Basin and Range Province of northwestern Nevada and northeastern California. The most recent earthquake on all faults postdates the ca. 18–15 ka last glacial highstand of pluvial Lake Lahontan and other pluvial lakes in the region...
Authors
Stephen Personius, Richard W. Briggs, J. Zebulon Maharrey, Stephen J. Angster, Shannon A. Mahan
The California Earthquake Advisory Plan: A history The California Earthquake Advisory Plan: A history
Since 1985, the California Office of Emergency Services (Cal OES) has issued advisory statements to local jurisdictions and the public following seismic activity that scientists on the California Earthquake Prediction Evaluation Council view as indicating elevated probability of a larger earthquake in the same area during the next several days. These advisory statements are motivated by
Authors
Evelyn A. Roeloffs, James D. Goltz
Down to Earth with an electric hazard from space Down to Earth with an electric hazard from space
In reaching across traditional disciplinary boundaries, solid-Earth geophysicists and space physicists are forging new collaborations to map magnetic-storm hazards for electric-power grids. Future progress in evaluation storm time geoelectric hazards will come primarily through monitoring, surveys, and modeling of related data.
Authors
Jeffrey J. Love, Paul A. Bedrosian, Adam Schultz
Diagenetic silica enrichment and late-stage groundwater activity in Gale crater, Mars Diagenetic silica enrichment and late-stage groundwater activity in Gale crater, Mars
Diagenetic silica enrichment in fracture-associated halos that crosscut lacustrine and unconformably overlying aeolian sedimentary bedrock is observed on the lower north slope of Aeolis Mons in Gale crater, Mars. The diagenetic silica enrichment is colocated with detrital silica enrichment observed in the lacustrine bedrock yet extends into a considerably younger, unconformably draping...
Authors
Jens Frydenvang, Patrick J. Gasda, Joel A. Hurowitz, John P. Grotzinger, Roger C. Wiens, Horton E. Newsom, Ken S. Edgett, Jessica Watkins, John C. Bridges, Sylvestre Maurice, Martin R. Fisk, Jeffrey R. Johnson, William Rapin, Nathan Stein, Sam M. Clegg, S. P. Schwenzer, C. Bedford, P. Edwards, Nicolas Mangold, Agnes Cousin, Ryan B. Anderson, Valerie Payre, David Vaniman, David Blake, Nina L. Lanza, Sanjeev Gupta, Jason K. Van Beek, Violaine Sautter, Pierre-Yves Meslin, Melissa Rice, Ralf Milliken, Ralf Gellert, Lucy Thompson, Ben C. Clark, Dawn Y. Sumner, Abigail A. Fraeman, Kjartan M Kinch, Morten B. Madsen, Igor Mitofranov, Insoo Jun, Fred J. Calef, Ashwin R. Vasavada
Low stress drops observed for aftershocks of the 2011 Mw 5.7 Prague, Oklahoma, earthquake Low stress drops observed for aftershocks of the 2011 Mw 5.7 Prague, Oklahoma, earthquake
In November 2011, three Mw ≥ 4.8 earthquakes and thousands of aftershocks occurred along the structurally complex Wilzetta fault system near Prague, Oklahoma. Previous studies suggest that wastewater injection induced a Mw 4.8 foreshock, which subsequently triggered a Mw 5.7 mainshock. We examine source properties of aftershocks with a standard Brune-type spectral model and jointly solve...
Authors
Danielle F. Sumy, Corrie J. Neighbors, Elizabeth S. Cochran, Katie M. Keranen
Precipitation thresholds for landslide occurrence near Seattle, Mukilteo, and Everett, Washington Precipitation thresholds for landslide occurrence near Seattle, Mukilteo, and Everett, Washington
Shallow landslides along coastal bluffs frequently occur in the railway corridor between Seattle and Everett, Washington. These slides disrupt passenger rail service, both because of required track maintenance and because the railroad owner, Burlington Northern Santa Fe Railway, does not allow passenger travel for 48 hours after a disruptive landslide. Sound Transit, which operates...
Authors
Caroline R. Scheevel, Rex L. Baum, Benjamin B. Mirus, Joel B. Smith
Time-causal decomposition of geomagnetic time series into secular variation, solar quiet, and disturbance signals Time-causal decomposition of geomagnetic time series into secular variation, solar quiet, and disturbance signals
A theoretical basis and prototype numerical algorithm are provided that decompose regular time series of geomagnetic observations into three components: secular variation; solar quiet, and disturbance. Respectively, these three components correspond roughly to slow changes in the Earth’s internal magnetic field, periodic daily variations caused by quasi-stationary (with respect to the...
Authors
E. Joshua Rigler
Effect of hydraulic hysteresis on the stability of infinite slopes under steady infiltration Effect of hydraulic hysteresis on the stability of infinite slopes under steady infiltration
Hydraulic hysteresis, including capillary soil water retention (SWR), air entrapment SWR, and hydraulic conductivity, is a common phenomenon in unsaturated soils. However, the influence of hydraulic hysteresis on suction stress, and subsequently slope stability, is generally ignored. This paper examines the influence of each of these three types of hysteresis on slope stability using an...
Authors
Pan Chen, Benjamin B. Mirus, Ning Lu, Jonathan W. Godt
The HayWired earthquake scenario—Earthquake hazards The HayWired earthquake scenario—Earthquake hazards
The HayWired scenario is a hypothetical earthquake sequence that is being used to better understand hazards for the San Francisco Bay region during and after an earthquake of magnitude 7 on the Hayward Fault. The 2014 Working Group on California Earthquake Probabilities calculated that there is a 33-percent likelihood of a large (magnitude 6.7 or greater) earthquake occurring on the...
Feasibility study for the quantitative assessment of mineral resources in asteroids Feasibility study for the quantitative assessment of mineral resources in asteroids
This study was undertaken to determine if the U.S. Geological Survey’s process for conducting mineral resource assessments on Earth can be applied to asteroids. Successful completion of the assessment, using water and iron resources to test the workflow, has resulted in identification of the minimal adjustments required to conduct full resource assessments beyond Earth. We also identify...
Authors
Laszlo P. Keszthelyi, Justin Hagerty, Amanda Bowers, Karl J. Ellefsen, Trude King, Ian Ridley, David Trilling, Nicholas Moskovitz, Will Grundy