Scientific drilling into the San Andreas Fault Zone - an overview of SAFOD's first five years
Mark Zoback, Stephen Hickman, William Ellsworth, SAFOD Science Team
2011, Scientific Drilling (11) 14-28
The San Andreas Fault Observatory at Depth (SAFOD) was drilled to study the physical and chemical processes controlling faulting and earthquake generation along an active, plate-bounding fault at depth. SAFOD is located near Parkfield, California and penetrates a section of the fault that is moving due to a combination of...
Estimating unknown input parameters when implementing the NGA ground-motion prediction equations in engineering practice
James Kaklamanos, Laurie G. Baise, David M. Boore
2011, Earthquake Spectra (27) 1219-1235
The ground-motion prediction equations (GMPEs) developed as part of the Next Generation Attenuation of Ground Motions (NGA-West) project in 2008 are becoming widely used in seismic hazard analyses. However, these new models are considerably more complicated than previous GMPEs, and they require several more input parameters. When employing the NGA...
Liquefaction probability curves for surficial geologic deposits
Thomas L. Holzer, Thomas E. Noce, Michael J. Bennett
2011, Environmental & Engineering Geoscience (17) 1-21
Liquefaction probability curves that predict the probability of surface manifestations of earthquake-induced liquefaction are developed for 14 different types of surficial geologic units. The units consist of alluvial fan, beach ridge, river delta topset and foreset beds, eolian dune, point bar, flood basin, natural river and alluvial fan levees, abandoned...
Estimating groundwater recharge
David A. Stonestrom
2011, Eos, Transactions, American Geophysical Union (92) 269-269
Groundwater recharge is the entry of fresh water into the saturated portion of the subsurface part of the hydrologic cycle, the modifier “saturated” indicating that the pressure of the pore water is greater than atmospheric. Briefly stated, recharge is downward flux across the water table. The term “groundwater recharge” can...
Pelagic Piscivory Under Shifting Environmental Gradients: Application of A Visual Foraging Model To Diel and Seasonal Sonic Telemetry of Cutthroat Trout In Strawberry Reservoir
David A. Beauchamp, Adam G. Hansen, Casey M. Baldwin
2011, Conference Paper, Abstracts from the 2011 Joint Annual Meeting of the Society for Northwestern Vertebrate Biology and Washington Chapter of the Wildlife Society, Held at the Wesley Inn, Gig Harbor, Washington, March 23�25, 2011, Northwestern Naturalist, v.92, no.2, p. 136�166
Nearshore biological communities prior to the removal of the Elwha River dams: Chapter 6 in Coastal habitats of the Elwha River, Washington--biological and physical patterns and processes prior to dam removal
Stephen P. Rubin, Ian M. Miller, Nancy Elder, Reginald R. Reisenbichler, Jeffrey J. Duda
Jeffrey J. Duda, Jonathan A. Warrick, Christopher S. Magirl, editor(s)
2011, Scientific Investigations Report 2011-5120-6
Increases in sediment delivery to coastal waters are expected following removal of dams on the Elwha River, Washington, potentially increasing sediment deposition on the seafloor and suspended sediment in the water column. Biological communities inhabiting shallow, subtidal depths (3–18 m) near the mouth of the Elwha River, between the west end...
Selectivity evaluation for two experimental gill-net configurations used to sample Lake Erie walleyes
Christopher S. Vandergoot, Patrick M. Kocovsky, Travis O. Brenden, Weihai Liu
2011, North American Journal of Fisheries Management (31) 832-842
We used length frequencies of captured walleyes Sander vitreus to indirectly estimate and compare selectivity between two experimental gill-net configurations used to sample fish in Lake Erie: (1) a multifilament configuration currently used by the Ohio Department of Natural Resources (ODNR) with stretched-measure mesh sizes ranging from 51 to 127...
Testing long-period ground-motion simulations of scenario earthquakes using the Mw 7.2 El Mayor-Cucapah mainshock: Evaluation of finite-fault rupture characterization and 3D seismic velocity models
Robert W. Graves, Brad T. Aagaard
2011, Bulletin of the Seismological Society of America (101) 895-907
Using a suite of five hypothetical finite-fault rupture models, we test the ability of long-period (T>2.0 s) ground-motion simulations of scenario earthquakes to produce waveforms throughout southern California consistent with those recorded during the 4 April 2010 Mw 7.2 El Mayor-Cucapah earthquake. The hypothetical ruptures are generated using the methodology proposed by <a...
Using the 2011 Mw9.0 Tohoku earthquake to test the Coulomb stress triggering hypothesis and to calculate faults brought closer to failure
Shinji Toda, Jian Lin, Ross S. Stein
2011, Earth, Planets and Space (63) 725-730
The 11 March 2011 Tohoku Earthquake provides an unprecedented test of the extent to which Coulomb stress transfer governs the triggering of aftershocks. During 11-31 March, there were 177 aftershocks with focal mechanisms, and so the Coulomb stress change imparted by the rupture can be resolved on the aftershock nodal...
Seasonal productivity in a population of migratory songbirds: why nest data are not enough
Henry M. Streby, David E. Andersen
2011, Ecosphere (2) 1-15
Population models for many animals are limited by a lack of information regarding juvenile survival. In particular, studies of songbird reproductive output typically terminate with the success or failure of nests, despite the fact that adults spend the rest of the reproductive season rearing dependent fledglings. Unless fledgling survival does...
Quantifying home range habitat requirements for bobcats (Lynx rufus) in Vermont, USA
Therese Donovan, Mark Freeman, Hanem Abouelezz, Kim Royar, Alan D. Howard, R. Mickey
2011, Biological Conservation (144) 2799-2809
We demonstrate how home range and habitat use analysis can inform landscape-scale conservation planning for the bobcat, Lynx rufus, in Vermont USA. From 2005 to 2008, we outfitted fourteen bobcats with GPS collars that collected spatially explicit locations from individuals every 4 h for 3–4 months. Kernel home range techniques were used to...
Seasonally dynamic diel vertical migrations of Mysis diluviana, coregonine fishes, and siscowet lake trout in the pelagia of western Lake Superior
Tyler D. Ahrenstorff, Thomas R. Hrabik, Jason D. Stockwell, Daniel L. Yule, Greg G. Sass
2011, Transactions of the American Fisheries Society (140) 1504-1520
Diel vertical migrations are common among many aquatic species and are often associated with changing light levels. The underlying mechanisms are generally attributed to optimizing foraging efficiency or growth rates and avoiding predation risk (μ). The objectives of this study were to (1) assess seasonal and interannual changes in vertical...
Representation of bidirectional ground motions for design spectra in building codes
Jonathan P. Stewart, Norman A. Abrahamson, Gail M. Atkinson, Jack W. Beker, David M. Boore, Yousef Bozorgnia, Kenneth W. Campbell, Craig D. Comartin, I.M. Idriss, Marshall Lew, Michael Mehrain, Jack P. Moehle, Farzad Naeim, Thomas A. Sabol
2011, Earthquake Spectra (27) 927-937
The 2009 NEHRP Provisions modified the definition of horizontal ground motion from the geometric mean of spectral accelerations for two components to the peak response of a single lumped mass oscillator regardless of direction. These maximum-direction (MD) ground motions operate under the assumption that the dynamic properties of the structure...
The role of backbarrier infilling in the formation of barrier island systems
Christopher J. Hein, Duncan M. FitzGerald, Emily A. Carruthers, Byron D. Stone, Allen M. Gontz
2011, Conference Paper, The Proceedings of the Coastal Sediments 2011
Barrier islands develop through a variety of processes, including spit accretion, barrier elongation, and inlet filling. New geophysical and sedimentological data provide a means of documenting the presence of a paleoinlet within a barrier lithosome in the western Gulf of Maine, illuminating the process of backbarrier infilling and its effect...
Simulations of historical and future trends in snowfall and groundwater recharge for basins draining to Long Island Sound
David M. Bjerklie, Roland J. Viger, Thomas J. Trombley
2011, Earth Interactions (15) 1-35
A regional watershed model was developed for watersheds contributing to Long Island Sound, including the Connecticut River basin. The study region covers approximately 40 900 km2, extending from a moderate coastal climate zone in the south to a mountainous northern New England climate zone dominated by snowmelt in the north....
Using regional-scale pre- and post Hurricane Katrina lidar for monitoring and modeling: Chapter 30
Jason M. Stoker, D. Phil Turnipseed, Kenneth V. Wilson
2011, Book chapter, Recent Hurricane Research - Climate, Dynamics, and Societal Impacts
Hurricane Katrina was one of the largest natural disasters in U.S. history. Due to the sheer size of the affected areas, an unprecedented regional analysis at very high resolution and accuracy was needed to properly quantify and understand the effects of the hurricane and the storm tide. Many disparate sources of lidar data...
Bias-adjusted satellite-based rainfall estimates for predicting floods: Narayani Basin
Guleid A. Artan, S.A. Tokar, D.K. Gautam, S.R. Bajracharya, M.S. Shrestha
2011, Journal of Flood Risk Management (4) 360-373
In Nepal, as the spatial distribution of rain gauges is not sufficient to provide detailed perspective on the highly varied spatial nature of rainfall, satellite-based rainfall estimates provides the opportunity for timely estimation. This paper presents the flood prediction of Narayani Basin at the Devghat hydrometric station (32 000 km2) using bias-adjusted...
Sparrow modeling to understand water quality conditions in major regions of the United States: A featured collection introduction
Stephen D. Preston, Richard B. Alexander, David M. Wolock
2011, Journal of the American Water Resources Association (47) 887-890
No abstract available....
Water and heat transport in boreal soils: Implications for soil response to climate change
Zhaosheng Fan, Jennifer W. Harden, G.C. Winston, Jonathan A. O’Donnell, Jason C. Neff, Tingjun Zhang, Hugo Veldhuis, C.I. Czimczik
2011, Science of the Total Environment (409) 1836-1842
Soil water content strongly affects permafrost dynamics by changing the soil thermal properties. However, the movement of liquid water, which plays an important role in the heat transport of temperate soils, has been under-represented in boreal studies. Two different heat transport models with and without convective heat transport were compared...
Postwildfire preliminary debris flow hazard assessment for the area burned by the 2011 Las Conchas Fire in north-central New Mexico
Anne C. Tillery, Michael J. Darr, Susan H. Cannon, John A. Michael
2011, Open-File Report 2011-1308
The Las Conchas Fire during the summer of 2011 was the largest in recorded history for the state of New Mexico, burning 634 square kilometers in the Jemez Mountains of north-central New Mexico. The burned landscape is now at risk of damage from postwildfire erosion, such as that caused by...
Geologic map of the Cochiti Dam quadrangle, Sandoval County, New Mexico
David P. Dethier, Ren A. Thompson, Mark R. Hudson, Scott A. Minor, David A. Sawyer
2011, Scientific Investigations Map 3194
The Cochiti Dam quadrangle is located in the southern part of the Española Basin and contains sedimentary and volcanic deposits that record alluvial, colluvial, eolian, tectonic and volcanic processes over the past seventeen million years. The geology was mapped from 1997 to 1999 and modified in 2004 to 2008. The...
Geologic map of the Suquamish 7.5' quadrangle and part of the Seattle North 7.5' x 15' quadrangle, Kitsap County, Washington
Ralph A. Haugerud, Kathy Goetz Troost
2011, Scientific Investigations Map 3181
The Suquamish 7.5' quadrangle is in the center of the Puget Lowland, Washington. The quadrangle contains the northern two-thirds of Bainbridge Island and adjacent parts of the Kitsap Peninsula. Puget Sound and contiguous waterways form 35 percent of the map area. Maximum elevation is 137 m in the northwest corner...
Lidar-revised geologic map of the Wildcat Lake 7.5' quadrangle, Kitsap and Mason Counties, Washington
Rowland W. Tabor, Ralph A. Haugerud, Peter J. Haeussler, Kenneth P. Clark
2011, Scientific Investigations Map 3187
This map is an interpretation of a 6-ft-resolution (2-m-resolution) lidar (light detection and ranging) digital elevation model combined with the geology depicted on the Geologic Map of the Wildcat Lake 7.5' quadrangle, Kitsap and Mason Counties, Washington (Haeussler and Clark, 2000). Haeussler and Clark described, interpreted, and located the geology...
Development of a pan-Arctic monitoring plan for polar bears: Background paper
Dag Vongraven, Elizabeth L. Peacock
2011, Report
Polar bears (Ursus maritimus), by their very nature, and the extreme, remote environment in which they live, are inherently difficult to study and monitor. Monitoring polar bear populations is both arduous and costly and, to be effective, must be a long-term commitment. There are few jurisdictional governments and management...
Summary of November 2010 meeting to evaluate turbidite data for constraining the recurrence parameters of great Cascadia earthquakes for the update of national seismic hazard maps
Arthur D. Frankel
2011, Open-File Report 2011-1310
This report summarizes a meeting of geologists, marine sedimentologists, geophysicists, and seismologists that was held on November 18–19, 2010 at Oregon State University in Corvallis, Oregon. The overall goal of the meeting was to evaluate observations of turbidite deposits to provide constraints on the recurrence time and rupture extent of...
