Ground motion in the presence of complex topography: Earthquake and ambient noise sources
Stephen H. Hartzell, Mark Meremonte, Leonardo Ramírez-Guzmán, Daniel McNamara
2014, Bulletin of the Seismological Society of America (104) 451-466
To study the influence of topography on ground motion, eight seismic recorders were deployed for a period of one year over Poverty Ridge on the east side of the San Francisco Bay Area, California. This location is desirable because of its proximity to local earthquake sources and the significant topographic...
Responses of predatory invertebrates to seeding density and plant species richness in experimental tallgrass prairie restorations
Kristine T. Nemec, Craig R. Allen, Stephen D. Danielson, Christopher J. Helzer
2014, Agriculture, Ecosystems and Environment (183) 11-20
In recent decades, agricultural producers and non-governmental organizations have restored thousands of hectares of former cropland in the central United States with native grasses and forbs. However, the ability of these grassland restorations to attract predatory invertebrates has not been well documented, even though predators provide an important ecosystem service...
The lifecycle of silver in the United States in 2009
Thomas G. Goonan
2014, Scientific Investigations Report 2013-5178
Because silver is highly sought after for its properties, which make it eminently suitable for new technology applications, a clear understanding of the flow of materials in the economy, the historical context, and trends for the future can help project the future of silver in the economy of the United...
Seabed fluid expulsion along the upper slope and outer shelf of the U.S. Atlantic continental margin
D.S. Brothers, C. Ruppel, J.W. Kluesner, Uri S. ten Brink, J.D. Chaytor, J. C. Hill, B.D. Andrews, C. Flores
2014, Geophysical Research Letters (41) 96-101
Identifying the spatial distribution of seabed fluid expulsion features is crucial for understanding the substrate plumbing system of any continental margin. A 1100 km stretch of the U.S. Atlantic margin contains more than 5000 pockmarks at water depths of 120 m (shelf edge) to 700 m (upper slope), mostly updip of the contemporary...
Investigation of off-site airborne transport of lead from a superfund removal action site using lead isotope ratios and concentrations
Michael J. Pribil, Mark A. Maddaloni, Kimberly Staiger, Eric Wilson, Nick Magriples, Mustafa Ali, Dennis Santella
2014, Applied Geochemistry (41) 89-94
Lead (Pb) concentration and Pb isotopic composition of surface and subsurface soil samples were used to investigate the potential for off-site air transport of Pb from a former white Pb processing facility to neighboring residential homes in a six block area on Staten Island, NY. Surface and subsurface soil samples...
The 3D Elevation Program: summary for South Dakota
William J. Carswell Jr.
2014, Fact Sheet 2013-3084
Elevation data are essential to a broad range of applications, including forest resources management, wildlife and habitat management, national security, recreation, and many others. For the State of South Dakota, elevation data are critical for agriculture and precision farming, natural resources conservation, water supply and quality, infrastructure and construction management,...
Histological assessment of organs in sexually mature and post-spawning steelhead trout and insights into iteroparity
Zachary L. Penney, Christine M. Moffitt
2014, Reviews in Fish Biology and Fisheries (24) 781-801
Steelhead trout (Oncorhynchus mykiss) are anadromous and iteroparous, but repeat-spawning rates are generally low. Like other anadromous salmonids, steelhead trout fast during freshwater spawning migrations, but little is known about the changes that occur in vital organs and tissues. We hypothesized that fish capable of repeat-spawning would not undergo the...
Natural heat storage in a brine-filled solar pond in the Tully Valley of central New York
Brett Hayhurst, William M. Kappel
2014, Open-File Report 2013-1266
The Tully Valley, located in southern Onondaga County, New York, has a long history of unusual natural hydrogeologic phenomena including mudboils (Kappel, 2009), landslides (Tamulonis and others, 2009; Pair and others, 2000), landsurface subsidence (Hackett and others, 2009; Kappel, 2009), and a brine-filled sinkhole or “Solar pond” (fig. 1), which...
A GIS-based vulnerability assessment of brine contamination to aquatic resources from oil and gas development in eastern Sheridan County, Montana
Todd M. Preston, Tara L. Chesley-Preston, Joanna N. Thamke
2014, Science of the Total Environment (472) 1152-1162
Water (brine) co-produced with oil in the Williston Basin is some of the most saline in the nation. The Prairie Pothole Region (PPR), characterized by glacial sediments and numerous wetlands, covers the northern and eastern portion of the Williston Basin. Sheridan County, Montana, lies within the PPR and has a...
Using SPMDs for monitoring hydrophobic organic compounds in urban river water in Korea compared with using conventional water grab samples
Un-Jung Kim, Hee Young Kim, David A. Alvarez, In-Seok Lee, Jeong-Eun Oh
2014, Science of the Total Environment (470-471) 1537-1544
We aimed to verify the effectiveness of semi-permeablemembrane devices (SPMDs) formonitoring hydrophobic organic compounds, such as polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs), that are not easy to detect using conventional grab samples (because of their low concentrations), in water.We used SPMDs and grab samples to monitor PCBs and...
What do data used to develop ground-motion prediction equations tell us about motions near faults?
David M. Boore
2014, Pure and Applied Geophysics (171) 3023-3043
A large database of ground motions from shallow earthquakes occurring in active tectonic regions around the world, recently developed in the Pacific Earthquake Engineering Center’s NGA-West2 project, has been used to investigate what such a database can say about the properties and processes of crustal fault zones. There are a...
Prey availability, consumption, and quality contribute to variation in growth of subyearling Chinook Salmon rearing in riverine and reservoir habitats
Kenneth F. Tiffan, John M. Erhardt, Scott J. St. John
2014, Transactions of the American Fisheries Society (143) 219-229
We examined prey availability, prey consumed, and diet energy content as sources of variation in growth of natural fall Chinook Salmon Oncorhynchus tshawytscha subyearlings rearing in riverine and reservoir habitats in the Snake River. Subyearlings in riverine habitat primarily consumed aquatic insects (e.g., Diptera, Ephemeroptera, Trichoptera), of which a high proportion was...
Utilizing thin-film solid-phase extraction to assess the effect of organic carbon amendments on the bioavailability of DDT and dieldrin to earthworms
Natasha A. Andrade, Tiziana Centofanti, Laura L. McConnell, Cathleen J. Hapeman, Alba Torrents, Nguyen Anh, W. Nelson Beyer, Rufus L. Chaney, Jeffrey M. Novak, Marya O. Anderson, Keri B. Cantrell
2014, Environmental Pollution (185) 307-313
Improved approaches are needed to assess bioavailability of hydrophobic organic compounds in contaminated soils. Performance of thin-film solid-phase extraction (TF-SPE) using vials coated with ethylene vinyl acetate was compared to earthworm bioassay (Lumbricus terrestris). A DDT and dieldrin contaminated soil was amended with four organic carbon materials to assess the...
Mangrove expansion and saltmarsh decline at mangrove poleward limits
Neil Saintilan, Nicholas C. Wilson, Kerrylee Rogers, Anusha Rajkaran, Ken W. Krauss
2014, Global Ecology and Biogeography (20) 147-157
Mangroves are species of halophytic intertidal trees and shrubs derived from tropical genera and are likely delimited in latitudinal range by varying sensitivity to cold. There is now sufficient evidence that mangrove species have proliferated at or near their poleward limits on at least five continents over the past half...
Comparative recruitment dynamics of Alewife and Bloater in Lakes Michigan and Huron
Paris D. Collingsworth, David B. Bunnell, Charles P. Madenjian, Stephen C. Riley
2014, Transactions of the American Fisheries Society (143) 294-309
The predictive power of recruitment models often relies on the identification and quantification of external variables, in addition to stock size. In theory, the identification of climatic, biotic, or demographic influences on reproductive success assists fisheries management by identifying factors that have a direct and reproducible influence on the population...
The integration of social-ecological resilience and law
Ahjond S. Garmestani, Craig R. Allen, J.B. Ruhl, Crawford S. Holling
Ahjond S. Garmestani, Craig R. Allen, editor(s)
2014, Book chapter, Social-ecological resilience and law
No abstract available....
Thresholds for conservation and management: structured decision making as a conceptual framework
James D. Nichols, Mitchell J. Eaton, Julien Martin
Glenn R. Guntenspergen, editor(s)
2014, Book, Application of threshold concepts in natural resource decision making
A conceptual framework is provided for considering the threshold concept in natural resource management and conservation. We define three kinds of thresholds relevant to management and conservation. Ecological thresholds are values of system state variables at which small changes bring about substantial or specified changes in system dynamics. They are frequently incorporated...
11.12 - Volatile hydrocarbons and fuel oxygenates
Isabelle M. Cozzarelli
2014, Book chapter, Treatise on Geochemistry
Petroleum hydrocarbons and fuel oxygenates are among the most commonly occurring and widely distributed contaminants in the environment. This chapter presents a summary of the sources, transport, fate, and remediation of volatile fuel hydrocarbons and fuel additives in the environment. Much research has focused on the transport and transformation processes...
Tick control: Trapping, bio-control, host management and other alternative strategies
Howard S. Ginsberg
Daniel E. Sonenshine, R. Michael Roe, editor(s)
2014, Book chapter, Biology of ticks
Biology of Ticks is the most comprehensive work on tick biology and tick-borne diseases. This second edition is a multi-authored work, featuring the research and analyses of renowned experts across the globe. Spanning two volumes, the book examines the systematics, biology, structure, ecological adaptations, evolution, genomics and the molecular processes...
Alternative waste residue materials for passive in situ prevention of sulfide-mine tailings oxidation: A field evaluation
Peter Nason, Raymond H. Johnson, Clara Neuschutz, Lena Alakangas, Bjorn Ohlander
2014, Journal of Hazardous Materials (267) 245-254
Novel solutions for sulfide-mine tailings remediation were evaluated in field-scale experiments on a former tailings repository in northern Sweden. Uncovered sulfide-tailings were compared to sewage-sludge biosolid amended tailings over 2 years. An application of a 0.2 m single-layer sewage-sludge amendment was unsuccessful at preventing oxygen ingress to underlying tailings. It merely...
Sustainability of water-supply at military installations, Kabul Basin, Afghanistan
Thomas J. Mack, Michael P. Chornack, Ingrid M. Verstraeten
Igor Linkov, editor(s)
2014, Book chapter, Sustainable cities and military installations
The Kabul Basin, including the city of Kabul, Afghanistan, is host to several military installations of Afghanistan, the United States, and other nations that depend on groundwater resources for water supply. These installations are within or close to the city of Kabul. Groundwater also is the potable supply for the...
Use of natural and applied tracers to guide targeted remediation efforts in an acid mine drainage system, Colorado Rockies, USA
Rory Cowie, Mark W. Williams, Mike Wireman, Robert L. Runkel
2014, Water (6) 745-777
Stream water quality in areas of the western United States continues to be degraded by acid mine drainage (AMD), a legacy of hard-rock mining. The Rico-Argentine Mine in southwestern Colorado consists of complex multiple-level mine workings connected to a drainage tunnel discharging AMD to passive treatment ponds that discharge to...
“Our vanishing glaciers”: One hundred years of glacier retreat in Three Sisters Area, Oregon Cascade Range
James E. O’Connor
2014, Oregon Historical Society Quarterly (114) 402-427
In August 1910, thirty-nine members of the Mazamas Mountaineering Club ascended the peaks of the Three Sisters in central Oregon. While climbing, geologist Ira A. Williams photographed the surrounding scenery, including images of Collier Glacier. One hundred years later, U.S. Geological Survey research hydrologist Jim E. O’Connor matched those documented...
Debris flows: Behavior and hazard assessment
Richard M. Iverson
2014, Geology Today (30) 15-20
Debris flows are water-laden masses of soil and fragmented rock that rush down mountainsides, funnel into stream channels, entrain objects in their paths, and form lobate deposits when they spill onto valley floors. Because they have volumetric sediment concentrations that exceed 40 percent, maximum speeds that surpass 10 m/s, and...
Ecological and evolutionary consequences of benthic community stasis in the very deep sea (>1500 m)
Martin A. Buzas, Lee-Ann C. Hayek, Stephen J. Culver, Bruce W. Hayward, Lisa E. Osterman
2014, Paleobiology (40) 102-112
An enigma of deep-sea biodiversity research is that the abyss with its low productivity and densities appears to have a biodiversity similar to that of shallower depths. This conceptualization of similarity is based mainly on per-sample estimates (point diversity, within-habitat, or α-diversity). Here, we use a measure of between-sample within-community...
