Publications
Educational Publications
Educational Publications
Selected publications about earthquakes In plain language.
Filter Total Items: 2785
Regional spectral analysis of moderate earthquakes in northeastern North America—Final Report to the Nuclear Regulatory Commission, Project V6240, Task 3 Regional spectral analysis of moderate earthquakes in northeastern North America—Final Report to the Nuclear Regulatory Commission, Project V6240, Task 3
We analyze the Fourier spectra of S+Lg+surface wave groups from the horizontal and vertical components of broadband and accelerogram recordings of 120 small and moderate (2< Mw
Authors
Jack Boatwright
Analysis of mean seismic ground motion and its uncertainty based on the UCERF3 geologic slip rate model with uncertainty for California Analysis of mean seismic ground motion and its uncertainty based on the UCERF3 geologic slip rate model with uncertainty for California
The Uniform California Earthquake Rupture Forecast v.3 (UCERF3) model (Field et al., 2014) considers epistemic uncertainty in fault‐slip rate via the inclusion of multiple rate models based on geologic and/or geodetic data. However, these slip rates are commonly clustered about their mean value and do not reflect the broader distribution of possible rates and associated probabilities...
Authors
Yuehua Zeng
Landslides triggered by the 14 November 2016 Mw 7.8 Kaikōura Earthquake, New Zealand Landslides triggered by the 14 November 2016 Mw 7.8 Kaikōura Earthquake, New Zealand
The 14 November 2016 MwMw 7.8 Kaikōura earthquake generated more than 10,000 landslides over a total area of about 10,000 km210,000 km2, with the majority concentrated in a smaller area of about 3600 km23600 km2. The largest landslide triggered by the earthquake had an approximate volume of 20(±2) M m320(±2) M m3, with a runout distance of about 2.7 km, forming a dam on the Hapuku...
Authors
C. Massey, D. Townsend, Ellen Rathje, Kate E. Allstadt, B. Lukovic, Yoshihiro Kaneko, Brendon A. Bradley, J. Wartman, Randall W. Jibson, D. N. Petley, Nick Horspool, I. Hamling, J. Carey, S. Cox, John Davidson, S. Dellow, Jonathan W. Godt, Christopher Holden, Katherine D. Jones, Anna E. Kaiser, M. Little, B. Lyndsell, S. McColl, R. Morgenstern, Francis K. Rengers, D. Rhoades, B. Rosser, D. Strong, C. Singeisen, M. Villeneuve
Preface to the Focus Section on the Collaboratory for the Study of Earthquake Predictability (CSEP): New results and future directions Preface to the Focus Section on the Collaboratory for the Study of Earthquake Predictability (CSEP): New results and future directions
The Collaboratory for the Study of Earthquake Predictability (CSEP; Jordan, 2006) carries out fully prospective tests of earthquake forecasts, using fixed and standardized statistical tests and authoritative data sets, to assess the predictive skill of forecast models and to make objective comparisons between models. CSEP conducts prospective experiments at four testing centers around...
Authors
Andrew J. Michael, Maximillian J. Werner
Ensemble smoothed seismicity models for the new Italian Probabilistic Seismic Hazard Map Ensemble smoothed seismicity models for the new Italian Probabilistic Seismic Hazard Map
We develop a long‐term (a few decades or longer) earthquake rate forecast for Italy based on smoothed seismicity for incorporation in the 2017–2018 Italian Probabilistic Seismic Hazard Maps (IPSHM). Because the earthquake rate models from previous IPSHM were computed using source zones that were drawn around seismicity and tectonic provinces, the present model will be the first...
Authors
Aybige Akinci, Morgan P. Moschetti, Matteo Taroni
Reexamination of the subsurface fault structure in the vicinity of the 1989 moment-magnitude-6.9 Loma Prieta earthquake, central California, using steep-reflection, earthquake, and magnetic data Reexamination of the subsurface fault structure in the vicinity of the 1989 moment-magnitude-6.9 Loma Prieta earthquake, central California, using steep-reflection, earthquake, and magnetic data
We reexamine the geometry of the causative fault structure of the 1989 moment-magnitude-6.9 Loma Prieta earthquake in central California, using seismic-reflection, earthquake-hypocenter, and magnetic data. Our study is prompted by recent interpretations of a two-part dip of the San Andreas Fault (SAF) accompanied by a flower-like structure in the Coachella Valley, in southern California...
Authors
Edward Zhang, Gary S. Fuis, Rufus D. Catchings, Daniel S. Scheirer, Mark Goldman, Klaus Bauer
Broadband ground‐motion simulation of the 2011 Mw 6.2 Christchurch, New Zealand, earthquake Broadband ground‐motion simulation of the 2011 Mw 6.2 Christchurch, New Zealand, earthquake
This study presents the details and results of hybrid broadband (0–10 Hz) ground‐motion simulations for the 2011 MwMw 6.2 Christchurch, New Zealand, earthquake. The simulations utilize a 3D velocity model and a kinematic source model with stochastic realizations of the slip amplitude, rise time, and rake angle. The resulting ground motions capture the salient basin amplification effects...
Authors
Hoby N. T. Razafindrakoto, Brendon A. Bradley, Robert Graves
Development of a United States community shear wave velocity profile database Development of a United States community shear wave velocity profile database
We present the details of a multi-institutional effort to develop an open-access shear-wave velocity (VS) profile database (PDB), which will include a public repository for VS profile data in the United States. VS profiles are an essential resource for ground motion modeling and other applications. The minimum requirements for a site to be included in the database are in situ geophysical...
Authors
Sean K. Ahdi, Shamsher Sadiq, Okan Ilhan, Yousef Bozorgnia, Youssef M. A. Hashash, Dong Youp Kwak, Duhee Park, Alan Yong, Jonathan P. Stewart
Injection-induced moment release can also be aseismic Injection-induced moment release can also be aseismic
The cumulative seismic moment is a robust measure of the earthquake response to fluid injection for injection volumes ranging from 3100 to about 12 million m3. Over this range, the moment release is limited to twice the product of the shear modulus and the volume of injected fluid. This relation also applies at the much smaller injection volumes of the field experiment in France reported...
Authors
Arthur McGarr, Andrew J. Barbour
The limits of earthquake early warning: Timeliness of ground motion estimates The limits of earthquake early warning: Timeliness of ground motion estimates
The basic physics of earthquakes is such that strong ground motion cannot be expected from an earthquake unless the earthquake itself is very close or has grown to be very large. We use simple seismological relationships to calculate the minimum time that must elapse before such ground motion can be expected at a distance from the earthquake, assuming that the earthquake magnitude is not
Authors
Sarah E. Minson, Men-Andrin Meier, Annemarie S. Baltay Sundstrom, Thomas C. Hanks, Elizabeth S. Cochran
An updated stress map of the continental U.S. reveals heterogeneous intraplate stress An updated stress map of the continental U.S. reveals heterogeneous intraplate stress
Knowledge of the state of stress in the Earth’s crust is key to understanding the forces and processes responsible for earthquakes. Historically, low rates of natural seismicity in the central and eastern United States have complicated efforts to understand intraplate stress, but recent improvements in seismic networks and the spread of human-induced seismicity have greatly improved data...
Authors
Will Levandowski, Robert B Hermann, Richard W. Briggs, Oliver S. Boyd, Ryan D. Gold
Seismicity in the Challis, Idaho region, January 2014 - May 2017: Late aftershocks of the 1983 Ms 7.3 Borah Peak earthquake Seismicity in the Challis, Idaho region, January 2014 - May 2017: Late aftershocks of the 1983 Ms 7.3 Borah Peak earthquake
In April 2014, after about 20 yrs of relatively low seismicity, an energetic earthquake sequence (maximum ML 4.8) began 25–30 km northwest of the 1983 Ms 7.3 Borah Peak earthquake rupture area near the town of Challis, Idaho. This sequence ended in the fall of 2014, but in January 2015, a second energetic sequence (maximum ML 5.0) began about 20 km to the southeast. Modest seismicity has...
Authors
Guanning Pang, Keith D. Koper, Michael C. Stickney, James C. Pechmann, Relu Burlacu, Kristine L. Pankow, Suzette Payne, Harley M. Benz