Publications
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Probabilistic fault displacement hazard assessment (PFDHA) for nuclear installations according to IAEA safety standards Probabilistic fault displacement hazard assessment (PFDHA) for nuclear installations according to IAEA safety standards
In the last 10 yr, the International Atomic Energy Agency (IAEA) revised its safety standards for site evaluations of nuclear installations in response to emerging fault displacement hazard evaluation practices developed in Member States. New amendments in the revised safety guidance (DS507) explicitly recommend fault displacement hazard assessment, including separate approaches for...
Authors
Alessandro Valentini, Yoshimitsu Fukushima, Paolo Contri, Masato Ono, Toshiaki Sakai, Stephen Thompson, Emmanuel Viallet, Tadashi Annaka, Rui Chen, Robb E. S. Moss, Mark D. Petersen, Francesco Visini, Robert Youngs
A big problem for small earthquakes: Benchmarking routine magnitudes and conversion relationships with coda-envelope-derived Mw in southern Kansas and northern Oklahoma A big problem for small earthquakes: Benchmarking routine magnitudes and conversion relationships with coda-envelope-derived Mw in southern Kansas and northern Oklahoma
Earthquake magnitudes are widely relied upon measures of earthquake size. Although moment magnitude (MwMw) has become the established standard for moderate and large earthquakes, difficulty in reliably measuring seismic moments for small (generally MwMwMw. To assess this problem, we apply coda envelope analysis to reliably determine moment magnitudes for a case study of small...
Authors
David R. Shelly, Kevin Mayeda, Justin Barno, Katherine M. Whidden, Morgan P. Moschetti, Andrea L. Llenos, Justin Rubinstein, William L. Yeck, Paul S. Earle, Rengin Gok, William R. Walter
An efficient Bayesian framework for updating PAGER loss estimates An efficient Bayesian framework for updating PAGER loss estimates
We introduce a Bayesian framework for incorporating time-varying noisy reported data on damage and loss information to update near real-time loss estimates/alerts for the U.S. Geological Survey’s Prompt Assessment of Global Earthquakes for Response (PAGER) system. Initial loss estimation by PAGER immediately following an earthquake includes several uncertainties. Historically, the PAGER...
Authors
Hae Young Noh, Kishor S. Jaiswal, Davis T. Engler, David J. Wald
A ground motion model for GNSS peak ground displacement A ground motion model for GNSS peak ground displacement
We present an updated ground‐motion model (GMM) for MwMw 6–9 earthquakes using Global Navigation Satellite Systems (GNSS) observations of the peak ground displacement (PGD). Earthquake GMMs inform a range of Earth science and engineering applications, including source characterization, seismic hazard evaluations, loss estimates, and seismic design standards. A typical GMM is...
Authors
Dara Elyse Goldberg, Diego Melgar, Gavin P. Hayes, Valerie J. Sahakian, Brendan W. Crowell
Basin and site effects in the U.S. Pacific Northwest estimated from small‐magnitude earthquakes Basin and site effects in the U.S. Pacific Northwest estimated from small‐magnitude earthquakes
Earthquake hazards in the U.S. Pacific Northwest (PNW) are increased by the presence of deep sedimentary basins that amplify and prolong ground shaking. To better understand basin and site effects on ground motions, we compile a database of recordings from crustal and intraslab earthquakes. We process 8028 records with magnitudes from 3.5 to 6.8 and hypocentral depths up to 62 km to...
Authors
John Rekoske, Morgan P. Moschetti, Eric M. Thompson
Ten years on from the quake that shook the nation’s capital Ten years on from the quake that shook the nation’s capital
No abstract available.
Authors
Thomas L. Pratt, Martin C. Chapman, Anjana K. Shah, J. Wright Horton,, Oliver S. Boyd
The US Geological Survey ground failure product: Near-real-time estimates of earthquake-triggered landslides and liquefaction The US Geological Survey ground failure product: Near-real-time estimates of earthquake-triggered landslides and liquefaction
Since late 2018, the US Geological Survey (USGS) ground failure (GF) earthquake product has provided publicly available spatial estimates of earthquake-triggered landslide and liquefaction hazards, along with the qualitative hazard and population exposure-based alerts for M > 6 earthquakes worldwide and in near real time (within ∼30 min). Earthquake losses are oftentimes greatly...
Authors
Kate E. Allstadt, Eric M. Thompson, Randall W. Jibson, David J. Wald, Mike Hearne, Edward J. Hunter, Jeremy Fee, Heather Schovanec, Daniel Slosky, Kirstie Lafon Haynie
Quaternary reelfoot fault deformation in the Obion River Valley, Tennessee, USA Quaternary reelfoot fault deformation in the Obion River Valley, Tennessee, USA
Blind reverse faults are challenging to detect, and earthquake records can be elusive because deep fault slip does not break the surface along readily recognized scarps. The blind Reelfoot fault in the New Madrid seismic zone in the central United States has been the subject of extensive prior investigation; however, the extent of slip at the southern portion of the fault remains...
Authors
Jaime Delano, Richard W. Briggs, Jessica A. Thompson Jobe, Ryan D. Gold, Simon E. Engelhart
Geologic controls of slow-moving landslides near the U.S. West Coast Geologic controls of slow-moving landslides near the U.S. West Coast
Slow-moving landslides, often with nearly imperceptible creeping motion, are an important landscape shaper and a dangerous natural hazard across the globe, yet their spatial distribution and geologic controls are still poorly known owing to a paucity of detailed, large-area observations. Here, we use interferometry of L-band satellite radar images to reveal 617 spatially large (4 × 104...
Authors
Yuankun Xu, William H. Schulz, Zhong Lu, Jinwook Kim, Kelli Wadsworth Baxstrom
Why do my squiggles look funny? A gallery of compromised seismic signals Why do my squiggles look funny? A gallery of compromised seismic signals
Seismic instruments are highly sensitive and capable of recording a large range of different Earth signals. The high sensitivity of these instruments also makes them prone to various failures. Although many failures are very obvious, such as a dead channel, there are other more subtle failures that easily go unnoticed by both network operators and data users. This work documents several...
Authors
Adam T. Ringler, David B. Mason, G. Laske, Tyler Storm, M. Templeton
Spectral damping scaling factors for horizontal components of ground motions from subduction earthquakes using NGA-Subduction data Spectral damping scaling factors for horizontal components of ground motions from subduction earthquakes using NGA-Subduction data
This article develops global models of damping scaling factors (DSFs) for subduction zone earthquakes that are functions of the damping ratio, spectral period, earthquake magnitude, and distance. The Next Generation Attenuation for subduction earthquakes (NGA-Sub) project has developed the largest uniformly processed database of recorded ground motions to date from seven subduction...
Authors
Sanaz Rezaeian, L. Al Atik, N. M. Kuehn, N. A. Abrahamson, Y. Bozorgnia, S. Mazzoni, Kyle Withers, K. Campbell
Hazard analysis of landslides triggered by Typhoon Chata’an on July 2, 2002, in Chuuk State, Federated States of Micronesia Hazard analysis of landslides triggered by Typhoon Chata’an on July 2, 2002, in Chuuk State, Federated States of Micronesia
More than 250 landslides were triggered across the eastern volcanic islands of Chuuk State in the Federated States of Micronesia by torrential rainfall from tropical storm Chata’an on July 2, 2002. Landslides triggered during nearly 20 inches of rainfall in less than 24 hours caused 43 fatalities and the destruction or damage of 231 structures, including homes, schools, community centers...
Authors
Edwin L. Harp, Mark E. Reid, John A. Michael