Publications
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Extreme ground motions and Yucca Mountain Extreme ground motions and Yucca Mountain
Yucca Mountain is the designated site of the underground repository for the United States' high-level radioactive waste (HLW), consisting of commercial and military spent nuclear fuel, HLW derived from reprocessing of uranium and plutonium, surplus plutonium, and other nuclear-weapons materials. Yucca Mountain straddles the western boundary of the Nevada Test Site, where the United...
Authors
Thomas C. Hanks, Norman A. Abrahamson, Jack W. Baker, David M. Boore, Mark Board, James N. Brune, C. Allin Cornell, John W. Whitney
Mechanical properties of simulated Mars materials: gypsum-rich sandstones and lapilli tuff Mechanical properties of simulated Mars materials: gypsum-rich sandstones and lapilli tuff
Observations by the Mars Exploration Rover (MER) Opportunity, and other recent studies on diagenesis in the extensive equatorial layered deposits on Mars, suggest that the likely lithologies of these deposits are gypsum-rich sandstones and tuffaceous sediments (for example, Murchie and others, 2009; Squyres and others, 2012; Zimbelman and Scheidt, 2012). Of particular interest is how the
Authors
Carolyn Morrow, David Lockner, Chris Okubo
Borehole-explosion and air-gun data acquired in the 2011 Salton Seismic Imaging Project (SSIP), southern California: description of the survey Borehole-explosion and air-gun data acquired in the 2011 Salton Seismic Imaging Project (SSIP), southern California: description of the survey
The Imperial and Coachella Valleys are being formed by active plate-tectonic processes. From the Imperial Valley southward into the Gulf of California, plate motions are rifting the continent apart. In the Coachella Valley, the plates are sliding past one another along the San Andreas and related faults (fig. 1). These processes build the stunning landscapes of the region, but also...
Authors
Elizabeth J. Rose, Gary S. Fuis, Joann M. Stock, John A. Hole, Annie M. Kell, Graham Kent, Neal W. Driscoll, Mark Goldman, Angela M. Reusch, Liang Han, Robert R. Sickler, Rufus D. Catchings, Michael J. Rymer, Coyn J. Criley, Daniel S. Scheirer, Steven M. Skinner, Coye J. Slayday-Criley, Janice M. Murphy, Edward G. Jensen, Robert McClearn, Alex J. Ferguson, Lesley A. Butcher, Max A. Gardner, Iain D. Emmons, Caleb L. Loughran, Joseph R. Svitek, Patrick C. Bastien, Joseph A. Cotton, David S. Croker, Alistair J. Harding, Jeffrey M. Babcock, Steven H. Harder, Carla M. Rosa
Uniform California earthquake rupture forecast, version 3 (UCERF3): the time-independent model Uniform California earthquake rupture forecast, version 3 (UCERF3): the time-independent model
In this report we present the time-independent component of the Uniform California Earthquake Rupture Forecast, Version 3 (UCERF3), which provides authoritative estimates of the magnitude, location, and time-averaged frequency of potentially damaging earthquakes in California. The primary achievements have been to relax fault segmentation assumptions and to include multifault ruptures...
Authors
Edward H. Field, Glenn P. Biasi, Peter Bird, Timothy E. Dawson, Karen R. Felzer, David D. Jackson, Kaj M. Johnson, Thomas H. Jordan, Christopher Madden, Andrew J. Michael, Kevin R. Milner, Morgan T. Page, Thomas Parsons, Peter M. Powers, Bruce E. Shaw, Wayne R. Thatcher, Ray J. Weldon, Yuehua Zeng
The music of earthquakes and Earthquake Quartet #1 The music of earthquakes and Earthquake Quartet #1
Earthquake Quartet #1, my composition for voice, trombone, cello, and seismograms, is the intersection of listening to earthquakes as a seismologist and performing music as a trombonist. Along the way, I realized there is a close relationship between what I do as a scientist and what I do as a musician. A musician controls the source of the sound and the path it travels through their...
Authors
Andrew J. Michael
Identifying the dynamic characteristics of a dual core-wall and frame building in Chile using aftershocks of the 27 February 2010 (Mw=8.8) Maule, Chile, earthquake Identifying the dynamic characteristics of a dual core-wall and frame building in Chile using aftershocks of the 27 February 2010 (Mw=8.8) Maule, Chile, earthquake
Following the 27 February 2010 (Mw = 8.8) Offshore Maule, Chile earthquake, a temporary, 16-channel, real-time data streaming array was installed in a recently constructed building in Viña del Mar to capture its responses to aftershocks. The cast-in-place, reinforced concrete building is 16 stories high, with 3 additional basement levels, and has dual system comprising multiple...
Authors
Mehmet Çelebi, Mark Sereci, Ruben Boroschek, Rodrigo Carreno, Patricio Bonelli
Calibration of semi-stochastic procedure for simulating high-frequency ground motions Calibration of semi-stochastic procedure for simulating high-frequency ground motions
Broadband ground motion simulation procedures typically utilize physics-based modeling at low frequencies, coupled with semi-stochastic procedures at high frequencies. The high-frequency procedure considered here combines deterministic Fourier amplitude spectra (dependent on source, path, and site models) with random phase. Previous work showed that high-frequency intensity measures from...
Authors
Emel Seyhan, Jonathan P. Stewart, Robert Graves
Injection-induced earthquakes Injection-induced earthquakes
Earthquakes in unusual locations have become an important topic of discussion in both North America and Europe, owing to the concern that industrial activity could cause damaging earthquakes. It has long been understood that earthquakes can be induced by impoundment of reservoirs, surface and underground mining, withdrawal of fluids and gas from the subsurface, and injection of fluids...
Authors
William L. Ellsworth
Crustal structure and fault geometry of the 2010 Haiti earthquake from temporary seismometer deployments Crustal structure and fault geometry of the 2010 Haiti earthquake from temporary seismometer deployments
Haiti has been the locus of a number of large and damaging historical earthquakes. The recent 12 January 2010 Mw 7.0 earthquake affected cities that were largely unprepared, which resulted in tremendous losses. It was initially assumed that the earthquake ruptured the Enriquillo Plantain Garden fault (EPGF), a major active structure in southern Haiti, known from geodetic measurements and...
Authors
Roby Douilly, Jennifer S. Haase, William L. Ellsworth, Marie-Paule Bouin, Eric Calais, Steeve J. Symithe, John G. Armbruster, Bernard Mercier de Lepinay, Anne Deschamps, Saint‐Louis Mildor, Mark E. Meremonte, Susan E. Hough
InSAR Evidence for an active shallow thrust fault beneath the city of Spokane Washington, USA InSAR Evidence for an active shallow thrust fault beneath the city of Spokane Washington, USA
In 2001, a nearly five month long sequence of shallow, mostly small magnitude earthquakes occurred beneath the city of Spokane, a city with a population of about 200,000, in the state of Washington. During most of the sequence, the earthquakes were not well located because seismic instrumentation was sparse. Despite poor-quality locations, the earthquake hypocenters were likely very...
Authors
Charles W. Wicks, Craig S. Weaver, Paul Bodin, Brian Sherrod
Foreshocks during the nucleation of stick-slip instability Foreshocks during the nucleation of stick-slip instability
We report on laboratory experiments which investigate interactions between aseismic slip, stress changes, and seismicity on a critically stressed fault during the nucleation of stick-slip instability. We monitor quasi-static and dynamic changes in local shear stress and fault slip with arrays of gages deployed along a simulated strike-slip fault (2 m long and 0.4 m deep) in a saw cut...
Authors
Gregory C. McLaskey, Brian D. Kilgore
Spatial variability of "Did You Feel It?" intensity data: insights into sampling biases in historical earthquake intensity distributions Spatial variability of "Did You Feel It?" intensity data: insights into sampling biases in historical earthquake intensity distributions
Recent parallel development of improved quantitative methods to analyze intensity distributions for historical earthquakes and of web‐based systems for collecting intensity data for modern earthquakes provides an opportunity to reconsider not only important individual historical earthquakes but also the overall characterization of intensity distributions for historical events. The focus...
Authors
Susan E. Hough