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
Post-fire debris-flow hazard assessment of the area burned by the 2013 Beaver Creek Fire near Hailey, central Idaho Post-fire debris-flow hazard assessment of the area burned by the 2013 Beaver Creek Fire near Hailey, central Idaho
A preliminary hazard assessment was developed for debris-flow hazards in the 465 square-kilometer (115,000 acres) area burned by the 2013 Beaver Creek fire near Hailey in central Idaho. The burn area covers all or part of six watersheds and selected basins draining to the Big Wood River and is at risk of substantial post-fire erosion, such as that caused by debris flows. Empirical models...
Authors
Kenneth D. Skinner
Rupture model of the 2011 Mineral, Virginia, earthquake from teleseismic and regional waveforms Rupture model of the 2011 Mineral, Virginia, earthquake from teleseismic and regional waveforms
We independently invert teleseismic P waveforms and regional crustal phases to examine the finite fault slip model for the 2011 Mw 5.8 Mineral, Virginia, earthquake. Theoretical and empirical Green's functions are used for the teleseismic and regional models, respectively. Both solutions show two distinct sources each about 2 km across and separated by 2.5 km. The source at the...
Authors
Stephen H. Hartzell, Carlos Mendoza, Yuehua Zeng
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
Neutron absorption constraints on the composition of 4 Vesta Neutron absorption constraints on the composition of 4 Vesta
Global maps of the macroscopic thermal neutron absorption cross section of Vesta's regolith by the Gamma Ray and Neutron Detector (GRaND) on board the NASA Dawn spacecraft provide constraints on the abundance and distribution of Fe, Ca, Al, Mg, and other rock-forming elements. From a circular, polar low-altitude mapping orbit, GRaND sampled the regolith to decimeter depths with a spatial
Authors
Thomas H. Prettyman, David W. Mittlefehldt, Naoyuki Yamashita, Andrew W. Beck, William C. Feldman, John S. Hendricks, David J. Lawrence, Timothy J. McCoy, Harry Y. McSween, Patrick N. Paplowski, Robert C. Reedy, Michael J. Toplis, Lucille Le Corre, Hugau Mizzon, Vishnu Reddy, Timothy N. Titus, Carol A. Raymond, Christopher T. Russell
Heavy mineral analysis for assessing the provenance of sandy sediment in the San Francisco Bay Coastal System Heavy mineral analysis for assessing the provenance of sandy sediment in the San Francisco Bay Coastal System
Heavy or high-specific gravity minerals make up a small but diagnostic component of sediment that is well suited for determining the provenance and distribution of sediment transported through estuarine and coastal systems worldwide. By this means, we see that surficial sand-sized sediment in the San Francisco Bay Coastal System comes primarily from the Sierra Nevada and associated...
Authors
Florence L. Wong, Donald L. Woodrow, Mary McGann
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
Damping scaling factors for elastic response spectra for shallow crustal earthquakes in active tectonic regions: "average" horizontal component Damping scaling factors for elastic response spectra for shallow crustal earthquakes in active tectonic regions: "average" horizontal component
Ground motion prediction equations (GMPEs) for elastic response spectra are typically developed at a 5% viscous damping ratio. In reality, however, structural and nonstructural systems can have other damping ratios. This paper develops a new model for a damping scaling factor (DSF) that can be used to adjust the 5% damped spectral ordinates predicted by a GMPE for damping ratios between...
Authors
Sanaz Rezaeian, Yousef Bozorgnia, I.M. Idriss, Norman Abrahamson, Kenneth Campbell, Walter Silva