The California Earthquake Advisory Plan: A history
Evelyn A. Roeloffs, James D. Goltz
2017, Seismological Research Letters (88) 784-797
Since 1985, the California Office of Emergency Services (Cal OES) has issued advisory statements to local jurisdictions and the public following seismic activity that scientists on the California Earthquake Prediction Evaluation Council view as indicating elevated probability of a larger earthquake in the same area during the next several days....
Cascadia subduction tremor muted by crustal faults
Ray E. Wells, Richard J. Blakely, Aaron G. Wech, Patricia A. McCrory, Andrew Michael
2017, Geology (45) 515-518
Deep, episodic slow slip on the Cascadia subduction megathrust of western North America is accompanied by low-frequency tremor in a zone of high fluid pressure between 30 and 40 km depth. Tremor density (tremor epicenters per square kilometer) varies along strike, and lower tremor density statistically correlates with upper plate...
Global Positioning System data collection, processing, and analysis conducted by the U.S. Geological Survey Earthquake Hazards Program
Jessica R. Murray, Jerry L. Svarc
2017, Seismological Research Letters (88) 916-925
The U.S. Geological Survey Earthquake Science Center collects and processes Global Positioning System (GPS) data throughout the western United States to measure crustal deformation related to earthquakes and tectonic processes as part of a long‐term program of research and monitoring. Here, we outline data collection procedures and present the GPS...
Spatiotemporal variability of snow depletion curves derived from SNODAS for the conterminous United States, 2004-2013
Jessica M. Driscoll, Lauren E. Hay, Andrew R. Bock
2017, Journal of the American Water Resources Association (53) 655-666
Assessment of water resources at a national scale is critical for understanding their vulnerability to future change in policy and climate. Representation of the spatiotemporal variability in snowmelt processes in continental-scale hydrologic models is critical for assessment of water resource response to continued climate change. Continental-extent hydrologic models such as...
Long-term forest productivity
Bernard T. Bormann, Steven S. Perakis, Robyn Darbyshire, Jeff Hatten
Deanna H. Olson, Beatrice Van Horne, editor(s)
2017, Book chapter, People, forests, and change: Lessons from the Pacific Northwest
No abstract available....
Using variance structure to quantify responses to perturbation in fish catches
Tiffany E. Vidal, Brian J. Irwin, Tyler Wagner, Lars G. Rudstam, James R. Jackson, James R. Bence
2017, Transactions of the American Fisheries Society (146) 584-593
We present a case study evaluation of gill-net catches of Walleye Sander vitreus to assess potential effects of large-scale changes in Oneida Lake, New York, including the disruption of trophic interactions by double-crested cormorants Phalacrocorax auritus and invasive dreissenid mussels. We used the empirical long-term gill-net time series and a...
Microbial formation of labile organic carbon in Antarctic glacial environments
H.J. Smith, R. Foster, D.M. McKnight, John T. Lisle, S. Littmann, M.M.M. Kuypers, C.M. Foreman
2017, Nature Geoscience (10) 356-359
Roughly six petagrams of organic carbon are stored within ice worldwide. This organic carbon is thought to be of old age and highly bioavailable. Along with storage of ancient and new atmospherically deposited organic carbon, microorganisms may contribute substantially to the glacial organic carbon pool. Models of glacial microbial carbon...
Down to Earth with an electric hazard from space
Jeffrey J. Love, Paul A. Bedrosian, Adam Schultz
2017, Space Weather (15) 658-662
In reaching across traditional disciplinary boundaries, solid-Earth geophysicists and space physicists are forging new collaborations to map magnetic-storm hazards for electric-power grids. Future progress in evaluation storm time geoelectric hazards will come primarily through monitoring, surveys, and modeling of related data....
Neutron scattering measurements of carbon dioxide adsorption in pores within the Marcellus Shale: Implications for sequestration
Konstantinos L. Stefanopoulos, Tristan G. A. Youngs, Richard Sakurovs, Leslie F. Ruppert, Jitendra Bahadur, Yuri B. Melnichenko
2017, Environmental Science & Technology (51) 6515-6521
Shale is an increasingly viable source of natural gas and a potential candidate for geologic CO2sequestration. Understanding the gas adsorption behavior on shale is necessary for the design of optimal gas recovery and sequestration projects. In the present study neutron diffraction and small-angle neutron scattering measurements of adsorbed CO2 in Marcellus...
Low stress drops observed for aftershocks of the 2011 Mw 5.7 Prague, Oklahoma, earthquake
Danielle F. Sumy, Corrie J. Neighbors, Elizabeth S. Cochran, Katie M. Keranen
2017, Journal of Geophysical Research B: Solid Earth (122) 3813-3834
In November 2011, three Mw ≥ 4.8 earthquakes and thousands of aftershocks occurred along the structurally complex Wilzetta fault system near Prague, Oklahoma. Previous studies suggest that wastewater injection induced a Mw 4.8 foreshock, which subsequently triggered a Mw 5.7 mainshock. We examine source properties of aftershocks with a standard Brune-type spectral model and jointly solve for...
Identification of two novel reassortant avian influenza a (H5N6) viruses in whooper swans in Korea, 2016
Jipseol Jeong, Chanjin Woo, S. Ip, Injung An, Youngsik Kim, Kwanghee Lee, Seong-Deok Jo, Kidong Son, Saemi Lee, Jae-Ku Oem, Seung-Jun Wang, Yongkwan Kim, Jeonghwa Shin, Jonathan M. Sleeman, Weonhwa Jheong
2017, Virology Journal (14)
BackgroundOn November 20, 2016 two novel strains of H5N6 highly pathogenic avian influenza virus (HPAIVs) were isolated from three whooper swans (Cygnus cygnus) at Gangjin Bay in South Jeolla province, South Korea. Identification of HPAIVs in wild birds is significant as there is a...
Drawing a line in the sand: Effectiveness of off-highway vehicle management in California's Sonoran desert
Nathan Custer, Lesley A. Defalco, Kenneth E. Nussear, Todd C. Esque
2017, Journal of Environmental Management (193) 448-457
Public land policies manage multiple uses while striving to protect vulnerable plant and wildlife habitats from degradation; yet the effectiveness of such policies are infrequently evaluated, particularly for remote landscapes that are difficult to monitor. We assessed the use and impacts of recreational vehicles on Mojave Desert washes (intermittent streams)...
White-cheeked Pintail duckling and brood survival across wetland types at Humacao Nature Reserve, Puerto Rico
J. Brian Davis, Francisco Vilella, Joseph D. Lancaster, Marisel Lopez-Flores, Richard M. Kaminski, Jose A. Cruz-Burgos
2017, Condor (119) 308-320
Duckling survival is an important influence on recruitment in several North American Anas species. White-cheeked Pintail (Anas bahamensis) breeding in Puerto Rico encounter a variety of wetland types that may influence duckling survival. We monitored fates of 92 radio-tagged ducklings in 31 broods in 5 wetland habitat types at Humacao...
Matching watershed and otolith chemistry to establish natal origin of an endangered desert lake sucker
Deanna D. Strohm, Phaedra E. Budy, Todd A. Crowl
2017, Transactions of the American Fisheries Society (146) 732-743
Stream habitat restoration and supplemental stocking of hatchery-reared fish have increasingly become key components of recovery plans for imperiled freshwater fish; however, determining when to discontinue stocking efforts, prioritizing restoration areas, and evaluating restoration success present a conservation challenge. In this study, we demonstrate that otolith microchemistry is an effective...
Spatial variation in polycyclic aromatic hydrocarbon exposure in Barrow's goldeneye (Bucephala islandica) in coastal British Columbia
Megan Willie, Daniel Esler, W. Sean Boyd, Philip Molloy, Ronald C. Ydenberg
2017, Marine Pollution Bulletin (118) 167-179
Barrow's goldeneyes are sea ducks that winter throughout coastal British Columbia (BC). Their diet consists primarily of intertidal blue mussels, which can accumulate PAHs; accordingly, goldeneyes may be susceptible to exposure through contaminated prey. In 2014/15, we...
Fall and winter survival of brook trout and brown trout in a north-central Pennsylvania watershed
John A. Sweka, Lori A. Davis, Tyler Wagner
2017, Transactions of the American Fisheries Society (146) 744-752
Stream-dwelling salmonids that spawn in the fall generally experience their lowest survival during the fall and winter due to behavioral changes associated with spawning and energetic deficiencies during this time of year. We used data from Brook Trout Salvelinus fontinalis and Brown Trout Salmo trutta implanted with radio transmitters in...
Coal-tar-based pavement sealants—a potent source of PAHs
Barbara Mahler, Peter C. Van Metre
2017, Lakeline (37) 13-18
P avement sealants are applied to the asphalt pavement of many parking lots, driveways, and even playgrounds in North America (Figure 1), where, when first applied, they render the pavement glossy black and looking like new. Sealant products used commercially in the central, eastern, and northern United States typically are...
A paleoseismic transect across the northwestern Basin and Range Province, northwestern Nevada and northeastern California, USA
Stephen Personius, Richard W. Briggs, J. Zebulon Maharrey, Stephen J. Angster, Shannon A. Mahan
2017, Geosphere (13) 782-810
We use new and existing data to compile a record of ∼18 latest Quaternary large-magnitude surface-rupturing earthquakes on 7 fault zones in the northwestern Basin and Range Province of northwestern Nevada and northeastern California. The most recent earthquake on all faults postdates the ca. 18–15 ka last glacial highstand of...
A probabilistic approach to remote compositional analysis of planetary surfaces
Mathieu G.A. Lapotre, Bethany L. Ehlmann, Sarah E. Minson
2017, Journal of Geophysical Research E: Planets (122) 983-1009
Reflected light from planetary surfaces provides information, including mineral/ice compositions and grain sizes, by study of albedo and absorption features as a function of wavelength. However, deconvolving the compositional signal in spectra is complicated by the nonuniqueness of the inverse problem. Trade-offs between mineral abundances and grain sizes in setting...
Tropical river suspended sediment and solute dynamics in storms during an extreme drought
Kathryn E. Clark, James B. Shanley, Martha A. Scholl, Nicolas Perdrial, Julia N. Perdrial, Alain F. Plante, William H. McDowell
2017, Water Resources Research (53) 3695-3712
Droughts, which can strongly affect both hydrologic and biogeochemical systems, are projected to become more prevalent in the tropics in the future. We assessed the effects of an extreme drought during 2015 on stream water composition in the Luquillo Mountains of Puerto Rico. We demonstrated that drought base flow in...
Migratory behavior of adult sea lamprey and cumulative passage performance through four fishways
Theodore R. Castro-Santos, Xiaotao Shi, Alexander Haro
2017, Canadian Journal of Fisheries and Aquatic Sciences (5) 790-800
This article describes a study of PIT-tagged sea lamprey (Petromyzon marinus) ascending four fishways comprising three designs at two dams on the Connecticut River, USA. Migration between dams was rapid (median migration rate = 23 km·day−1). Movement through the fishways was much slower, however (median = 0.02–0.33 km·day−1). Overall delay...
Aquatic-riparian systems
Deanna H. Olson, Sherri L. Johnson, Paul D. Anderson, Brooke E. Penaluna, Jason B. Dunham
2017, Book chapter, People, forests, and change: Lessons from the Pacific Northwest
No abstract available....
Climate legacy and lag effects on dryland plant communities in the southwestern U.S.
Erin Bunting, Seth M. Munson, Miguel L. Villarreal
2017, Ecological Indicators (74) 216-229
Climate change effects on vegetation will likely be strong in the southwestern U.S., which is projected to experience large increases in temperature and changes in precipitation. Plant communities in the southwestern U.S. may be particularly vulnerable to climate change as the productivity of many plant species is strongly water-limited. This...
Geomorphology, denudation rates, and stream channel profiles reveal patterns of mountain building adjacent to the San Andreas fault in northern California, USA
Stephen B. DeLong, George E. Hilley, Carol S. Prentice, Christopher J. Crosby, Intan N. Yokelson
2017, GSA Bulletin (129) 732-749
Relative horizontal motion along strike-slip faults can build mountains when motion is oblique to the trend of the strike-slip boundary. The resulting contraction and uplift pose off-fault seismic hazards, which are often difficult to detect because of the poor vertical resolution of satellite geodesy and difficulty of locating offset datable...
Do we need demographic data to forecast plant population dynamics?
Andrew T. Tredennick, Mevin Hooten, Peter B. Adler
2017, Methods in Ecology and Evolution (8) 541-551
Rapid environmental change has generated growing interest in forecasts of future population trajectories. Traditional population models built with detailed demographic observations from one study site can address the impacts of environmental change at particular locations, but are difficult to scale up to the landscape and regional scales...
