Publications
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A near-real-time model for estimating probability of road obstruction due to earthquake-triggered landslides
Coseismic landslides are a major source of transportation disruption in mountainous areas, but few approaches exist for rapidly estimating impacts to road networks. We develop a model that links the U.S. Geological Survey (USGS) near-real-time earthquake-triggered landslide hazard model with Open Street Map (OSM) road network data to rapidly estimate segment-level obstruction risk following major
Authors
B.H. Wilson, Kate E. Allstadt, Eric M. Thompson
Evidence for latent crustal fluid injection transients in southern California from long-duration earthquake swarms
Earthquake swarms are manifestations of aseismic driving processes deep in the crust. We examine the spatiotemporal distribution of aseismic processes in Southern California using a 12-years catalog of swarms derived with deep learning algorithms. In a core portion of the plate boundary region, which is not associated with elevated heat flow, we identify 92 long-duration swarms ranging from 6 mont
Authors
Zachary E. Ross, Elizabeth S. Cochran
NGA-East ground-motion characterization model Part II: Implementation and hazard implications
As a companion article to Goulet et al., we describe implementation of the NGA-East ground motion characterization (GMC) model in probabilistic seismic hazard analysis (PSHA) for sites in the Central and Eastern United States (CEUS). We present extensions to the EPRI/DOE/NRC seismic source characterization (SSC) model for the CEUS needed for full implementation of NGA-East. Comparisons are present
Authors
Robert Youngs, Christine A. Goulet, Yousef Bozorgnia, Nicolas Kuehn, Linda Al Atik, Robert Graves, Gail M. Atkinson
Online-coupling of widely-ranged timescales to model coral reef development
The increasing pressure on Earth's ecosystems due to climate change is becoming more and more evident and the impacts of climate change are especially visible on coral reefs. Understanding how climate change interacts with the physical environment of reefs to impact coral growth and reef development is critically important to predicting the persistence of reefs into the future. In this study, a bi
Authors
Gijs Hendrickx, Peter M. J. Herman, Jasper T. Dijkstra, Curt Storlazzi, Lauren Toth
Impacts of sediment removal from and placement in coastal barrier island systems
Executive SummaryOn June 24, 2019, Congressman Raul Grijalva of Arizona, Chair of the House Committee on Natural Resources, sent a letter to the directors of the U.S. Fish and Wildlife Service and the U.S. Geological Survey to request their assistance in answering questions regarding coastal sediment resource management within the Coastal Barrier Resources System as defined by the Coastal Barrier
Authors
Jennifer L. Miselis, James G. Flocks, Sara Zeigler, Davina Passeri, David R. Smith, Jill Bourque, Christopher R. Sherwood, Christopher G. Smith, Daniel J. Ciarletta, Kathryn Smith, Kristen Hart, David C. Kazyak, Alicia Berlin, Bianca Prohaska, Teresa Calleson, Kristi Yanchis
Short‐period surface‐wave tomography in the continental United States— A resource for research
The variation of phase and group velocity dispersion of Love and Rayleigh waves was determined for the continental United States and adjacent Canada. By processing ambient noise from the broadband channels of the Transportable Array (TA) of USArray and several Program for the Array Seismic Studies of the Continental Lithosphere experiments and using some earthquake recordings, the effort was focus
Authors
R. B. Herrmann, C. J. Ammon, Harley M. Benz, A. Aziz-Zanjani, J. Boschelli
A roadmap for planetary caves science and exploration
While researchers have pondered the possibility of extraterrestrial caves for more than 50 years, we have now entered the incipient phase of planetary caves exploration. Our knowledge of planetary caves varies from body to body. Earth represents the most advanced level of exploration, but many unanswered questions remain. Beyond Earth, identification of possible caves is most advanced for the Moon
Authors
Timothy N. Titus, J. Judson Wynne, Michael J. Malaska, Ali-akbar Agha-Mohammadi, Peter Buhler, E. Calvin Alexander, James W. Ashley, Armando Azua-Bustos, Penelope J. Boston, Debra L. Buczkowski, Leroy Chiao, Glen E. Cushing, John DeDecker, Pablo de León, Cansu Demirel-Floyd, Jo de Waele, Alberto G. Fairén, Amos Frumkin, Gary L. Harris, Heather Jones, Laura H. Kerber, Erin J. Leonard, Richard J. Léveillé, Kavya Manyapu, Matteo Massironi, Ana Z. Miller, John E. Mylroie, Bogdan P. Onac, Scott E. Parazynski, Cynthia B. Phillips, Charity M. Phillips-Lander, Thomas H. Prettyman, Haley M. Sapers, Francesco Sauro, Norbert Schorghofer, Dirk Schulze-Makuch, Jennifer Scully, Kyle Uckert, Robert V. Wagner, William L. Whittaker, Kaj E. Williams, Uland Y. Wong
A framework for evaluating earthquake early warning for an infrastructure network: An idealized case study of a northern California rail system
Earthquake early warning (EEW) systems provide a few to tens of seconds of warning before shaking hits a site. Despite the recent rapid developments of EEW systems around the world, the optimal alert response strategy and the practical benefit of using EEW are still open-ended questions, especially in areas where EEW systems are new or have not yet been deployed. Here, we use a case study of a rai
Authors
Sarah E. Minson, Elizabeth S. Cochran, Stephen Wu, Shunta Noda
A survey of storm-induced seaward-transport features observed during the 2019 and 2020 hurricane seasons
Hurricanes are known to play a critical role in reshaping coastlines, but often only impacts on the open ocean coast are considered, ignoring seaward-directed forces and responses. The identification of subaerial evidence for storm-induced seaward transport is a critical step towards understanding its impact on coastal resiliency. The visual features, found in the National Oceanic and Atmospheric
Authors
Jin-Si R. Over, Jenna A. Brown, Christopher R. Sherwood, Christie Hegermiller, Phillipe Alan Wernette, Andrew C. Ritchie, Jonathan Warrick
Material properties and triggering mechanisms of an andesitic lava dome collapse at Shiveluch Volcano, Kamchatka, Russia, revealed using the finite element method
Shiveluch volcano (Kamchatka, Russia) is an active andesitic volcano with a history of explosive activity, dome extrusion, and structural collapse during the Holocene. The most recent major (> 1 km3) dome collapse occurred in November 1964, producing a ~ 1.5 km3 debris avalanche that traveled over 15 km from the vent and triggered a phreatic explosion followed by a voluminous (~ 0.8 km3) eruption
Authors
Cory S Wallace, Lauren N. Schaefer, Marlène C. Villeneuve
Quantification of manganese for ChemCam Mars and laboratory spectra using a multivariate model
We report a new calibration model for manganese using the laser-induced breakdown spectroscopy instrument that is part of the ChemCam instrument suite onboard the NASA Curiosity rover. The model has been trained using an expanded set of 523 manganese-bearing rock, mineral, metal ore, and synthetic standards. The optimal calibration model uses the Partial Least Squares (PLS) and Least Absolute Shri
Authors
Patrick J. Gasda, Ryan Anderson, A. Cousin, O. Forni, S. M. Clegg, A. Ollila, Nina L. Lanza, S Lamm, Roger C. Wiens, Sylvestre Maurice, Olivier Gasnault, R. Beal, A. Reyes-Newell, D. Delapp
Introduction: Does water flow on Martian slopes?
No abstract available.
Authors
Colin M. Dundas, Susan J. Conway, David E Stillman