Publications
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A kinematic model for the formation of the Siletz-Crescent forearc terrane by capture of coherent fragments of the Farallon and Resurrection plates
The volcanic basement of the Oregon and Washington Coast ranges has been proposed to represent a pair of tracks of the Yellowstone hotspot formed at a mid-ocean ridge during the early Cenozoic. This interpretation has been questioned on many grounds, especially that the range of ages does not match the offshore spreading rates and that the presence of continental coarse clastic sediments is diffic
Authors
Patricia A. McCrory, Douglas S. Wilson
Modeling crustal deformation near active faults and volcanic centers: a catalog of deformation models and modeling approaches
This manual provides the physical and mathematical concepts for selected models used to interpret deformation measurements near active faults and volcanic centers. The emphasis is on analytical models of deformation that can be compared with data from the Global Positioning System (GPS) receivers, Interferometric synthetic aperture radar (InSAR), leveling surveys, tiltmeters and strainmeters. Sour
Authors
Maurizio Battaglia, Peter F. Cervelli, Jessica R. Murray
Seismic hazard analysis using simulated ground motions
No abstract available.
Authors
M. Dabaghi, A. Der Kiureghian, S. Rezaeian, N. Luco
Ambient response of a unique performance-based design tall building with dynamic response modification features
A 64-story, performance-based design building with reinforced concrete core shear walls and unique dynamic response modification features (tuned liquid sloshing dampers and buckling-restrained braces) has been instrumented with a monitoring array of 72 channels of accelerometers. The responses of the building to ambient motions from ground or wind were recorded and analyzed to identify modes and a
Authors
Mehmet Çelebi, Moh Huang, Anthony Shakal, John Hooper, Ron Klemencic
Seismicity around Parkfield correlates with static shear stress changes following the 2003 Mw6.5 San Simeon earthquake
Earthquakes trigger other earthquakes, but the physical mechanism of the triggering is currently debated. Most studies of earthquake triggering rely on earthquakes listed in catalogs, which are known to be incomplete around the origin times of large earthquakes and therefore missing potentially triggered events. Here we apply a waveform matched-filter technique to systematically detect earthquakes
Authors
Xiaoteng Meng, Zhigang Peng, Jeanne L. Hardebeck
Holocene tectonics and fault reactivation in the foothills of the north Cascade Mountains, Washington
We use LiDAR imagery to identify two fault scarps on latest Pleistocene glacial outwash deposits along the North Fork Nooksack River in Whatcom County, Washington (United States). Mapping and paleoseismic investigation of these previously unknown scarps provide constraints on the earthquake history and seismic hazard in the northern Puget Lowland. The Kendall scarp lies along the mapped trace of t
Authors
Brian L. Sherrod, Elizabeth Barnett, Elizabeth Schermer, Harvey M. Kelsey, Jonathan Hughes, Franklin F. Foit, Craig S. Weaver, Ralph Haugerud, Tim Hyatt
National assessment of hurricane-induced coastal erosion hazards: Southeast Atlantic Coast
Beaches serve as a natural barrier between the ocean and inland communities, ecosystems, and natural resources. However, these dynamic environments move and change in response to winds, waves, and currents. During extreme storms, changes to beaches can be large, and the results are sometimes catastrophic. Lives may be lost, communities destroyed, and millions of dollars spent on rebuilding.
Durin
Authors
Hilary F. Stockdon, Kara S. Doran, David M. Thompson, Kristin L. Sopkin, Nathaniel G. Plant
ARRA-funded VS30 measurements using multi-technique approach at strong-motion stations in California and central-eastern United States
Funded by the 2009 American Recovery and Reinvestment Act (ARRA), we conducted geophysical site characterizations at 191 strong-motion stations: 187 in California and 4 in the Central-Eastern United States (CEUS). The geophysical methods used at each site included passive and active surface-wave and body-wave techniques. Multiple techniques were used at most sites, with the goal of robustly determ
Authors
Alan Yong, Antony Martin, Kenneth Stokoe, John Diehl
Finite-fault source inversion using teleseismic P waves: Simple parameterization and rapid analysis
We examine the ability of teleseismic P waves to provide a timely image of the rupture history for large earthquakes using a simple, 2D finite‐fault source parameterization. We analyze the broadband displacement waveforms recorded for the 2010 Mw∼7 Darfield (New Zealand) and El Mayor‐Cucapah (Baja California) earthquakes using a single planar fault with a fixed rake. Both of these earthquakes were
Authors
C. Mendoza, S. Hartzell
Circulation exchange patterns in Sinclair Inlet, Washington
In 1994, the U.S. Geological Survey (USGS), in cooperation with the U.S. Navy, deployed three sets of moorings in Sinclair Inlet, which is a relatively small embayment on the western side of Puget Sound (fig. 1). This inlet is home to the Puget Sound Naval Shipyard. One purpose of the measurement program was to determine the transport pathways and fate of contaminants known to be present in Sincla
Authors
Marlene A. Noble, Kurt J. Rosenberger, Anthony J. Paulson, Anne L. Gartner
Inferring fault rheology from low-frequency earthquakes on the San Andreas
Families of recurring low-frequency earthquakes (LFEs) within nonvolcanic tremor (NVT) on the San Andreas fault in central California show strong sensitivity to shear stress induced by the daily tidal cycle. LFEs occur at all levels of the tidal shear stress and are in phase with the very small, ~400 Pa, stress amplitude. To quantitatively explain the correlation, we use a model from the existing
Authors
Nicholas M. Beeler, Amanda Thomas, Roland Bürgmann, David R. Shelly
A domain decomposition approach to implementing fault slip in finite-element models of quasi-static and dynamic crustal deformation
We employ a domain decomposition approach with Lagrange multipliers to implement fault slip in a finite-element code, PyLith, for use in both quasi-static and dynamic crustal deformation applications. This integrated approach to solving both quasi-static and dynamic simulations leverages common finite-element data structures and implementations of various boundary conditions, discretization scheme
Authors
Brad T. Aagaard, M.G. Knepley, C.A. Williams