The nation’s top 25 construction aggregates producers
Jason C. Willett
2014, Aggregates Manager
U.S. production of construction aggregates in 2012 was 2.18 billion short tons valued at $17.6 billion, free on board (f.o.b.) at plant. In 2012, construction aggregates production remained virtually unchanged from the levels of the last two years because of a very slight increase compared with that of 2011 in...
40Ar/39Ar geochronology, paleomagnetism, and evolution of the Boring volcanic field, Oregon and Washington, USA
Robert J. Fleck, Jonathan T. Hagstrum, Andrew T. Calvert, Russell C. Evarts, Richard M. Conrey
2014, Geosphere (10) 1283-1314
The 40Ar/39Ar investigations of a large suite of fine-grained basaltic rocks of the Boring volcanic field (BVF), Oregon and Washington (USA), yielded two primary results. (1) Using age control from paleomagnetic polarity, stratigraphy, and available plateau ages, 40Ar/39Ar recoil model ages are defined that provide reliable age results in the absence of...
2014 update of the U.S. national seismic hazard maps
Mark D. Petersen, Morgan P. Moschetti, Peter M. Powers, Charles S. Mueller, Kathleen M. Haller, Arthur D. Frankel, Yuehua Zeng, Sanaz Rezaeian, Stephen C. Harmsen, Oliver S. Boyd, Edward H. Field, R Chen, Kenneth S. Rukstales, Nicolas Luco, Russell L. Wheeler, Anna H. Olsen
2014, Book
We held 8 regional and topical workshops across the U.S. to gather information for these maps. The maps were available to the public for comment during a 60-day period. A Steering Committee (9 experts) was assembled to review the inputs and results and provide additional insights. The maps have been...
A global assessment of the conservation status of the American Oystercatcher Haematopus palliatus
Rob Clay, Arne J. Lesterhuis, Shiloh A. Schulte, Stephen Brown, Debra Reynolds, Theodore R. Simons
2014, International Wader Studies (20) 62-82
The American Oystercatcher Haematopus palliatus is the most widely distributed of the four oystercatcher species in the Western Hemisphere. Its range covers almost the entire Atlantic Coast from northeastern United States to southern Argentina; on the Pacific Coast it is found from northern Mexico to central Chile. This assessment covers the entire range of the...
Magma supply, storage, and transport at shield-stage Hawaiian volcanoes
Michael P. Poland, Asta Miklius, Emily K. Montgomery-Brown
Michael P. Poland, T. Jane Takahashi, Claire M. Landowski, editor(s)
2014, Professional Paper 1801-5
The characteristics of magma supply, storage, and transport are among the most critical parameters governing volcanic activity, yet they remain largely unconstrained because all three processes are hidden beneath the surface. Hawaiian volcanoes, particularly Kīlauea and Mauna Loa, offer excellent prospects for studying subsurface magmatic processes, owing to their accessibility...
Natural hazards and risk reduction in Hawaii
James P. Kauahikaua, Robert I. Tilling
Michael P. Poland, T. Jane Takahashi, Claire M. Landowski, editor(s)
2014, Professional Paper 1801-10
Significant progress has been made over the past century in understanding, characterizing, and communicating the societal risks posed by volcanic, earthquake, and tsunami hazards in Hawai‘i. The work of the Hawaiian Volcano Observatory (HVO), with a century-long commitment to serving the public with credible hazards information, contributed substantially to this...
Fishes and amphibians as laboratory model organisms for toxicological research
Sandeep Mukhi, Leticia Torres, Bibek Sharma, Madhavi Billam, Reynaldo Patino
Jitendra Kumar Sundaray, Rajeeb Kumar Mohanty, Munilkumar Sukham, Subhendu Kumar Otta, editor(s)
2014, Book chapter, Frontiers in aquaculture
No abstract available....
The Hawaiian Volcano Observatory: A natural laboratory for studying basaltic volcanism
Robert I. Tilling, James P. Kauahikaua, Steven R. Brantley, Christina A. Neal
Michael P. Poland, T. Jane Takahashi, Claire M. Landowski, editor(s)
2014, Professional Paper 1801-1
In the beginning of the 20th century, geologist Thomas A. Jaggar, Jr., argued that, to fully understand volcanic and associated hazards, the expeditionary mode of studying eruptions only after they occurred was inadequate. Instead, he fervently advocated the use of permanent observatories to record and measure volcanic phenomena—at and below...
Chemistry and texture of the rocks at Rocknest, Gale Crater: Evidence for sedimentary origin and diagenetic alteration
Diana L. Blaney, R. C. Wiens, S. Maurice, S.M. Clegg, Ryan B. Anderson, L.C. Kah, S. Le Mouélic, A. Ollila, N. Bridges, R. Tokar, G. Berger, J.C. Bridges, A. Cousin, B. Clark, M.D. Dyar, P.L. King, N. Lanza, N. Mangold, P.-Y. Meslin, H. Newsom, S. Schroder, S. Rowland, J. Johnson, L. Edgar, O. Gasnault, O. Forni, M. Schmidt, W. Goetz, K. Stack, D. Sumner, M. Fisk, M.B. Madsen
2014, Journal of Geophysical Research E: Planets (119) 2109-2131
A suite of eight rocks analyzed by the Curiosity Rover while it was stopped at the Rocknest sand ripple shows the greatest chemical divergence of any potentially sedimentary rocks analyzed in the early part of the mission. Relative to average Martian soil and to the stratigraphically lower units encountered as...
The dynamics of Hawaiian-style eruptions: A century of study
Margaret T. Mangan, Katharine V. Cashman, Donald A. Swanson
Michael P. Poland, T. Jane Takahashi, Claire M. Landowski, editor(s)
2014, Professional Paper 1801-8
This chapter, prepared in celebration of the Hawaiian Volcano Observatoryʼs centennial, provides a historical lens through which to view modern paradigms of Hawaiian-style eruption dynamics. The models presented here draw heavily from observations, monitoring, and experiments conducted on Kīlauea Volcano, which, as the site of frequent and accessible eruptions, has...
The effects of harvest on waterfowl populations
Evan G. Cooch, Matthieu Guillemain, G Scott Boomer, Jean-Dominique Lebreton, James D. Nichols
2014, Wildfowl (Special Issue 4) 220-276
Change in the size of populations over space and time is, arguably, the motivation for much of pure and applied ecological research. The fundamental model for the dynamics of any population is straightforward: the net change in the abundance is the simple difference between the number of individuals entering the population and the number...
A multi-scaled approach to evaluating the fish assemblage structure within southern Appalachian streams USA.
Joseph Kirsch, James T. Peterson
2014, Transactions of the American Fisheries Society (143) 1358-1371
There is considerable uncertainty about the relative roles of stream habitat and landscape characteristics in structuring stream-fish assemblages. We evaluated the relative importance of environmental characteristics on fish occupancy at the local and landscape scales within the upper Little Tennessee River basin of Georgia and North Carolina. Fishes were sampled...
Assessing the importance of terrain parameters on glide avalanche release
Erich H. Peitzsch, Jordy Hendrikx, Daniel B. Fagre
2014, Conference Paper, Proceedings of the International Snow Science Workshop
Glide snow avalanches are dangerous and difficult to predict. Despite recent research there is still a lack of understanding regarding the controls of glide avalanche release. Glide avalanches often occur in similar terrain or the same locations annually and observations suggest that topography may be critical. Thus, to gain an...
The critical role of islands for waterbird breeding and foraging habitat in managed ponds of the South Bay Salt Pond Restoration Project, South San Francisco Bay, California
Joshua T. Ackerman, C. Alex Hartman, Mark P. Herzog, Lacy M. Smith, Stacy M. Moskal, Susan E.W. De La Cruz, Julie L. Yee, John Y. Takekawa
2014, Open-File Report 2014-1263
The South Bay Salt Pond Restoration Project aims to restore 50–90 percent of former salt evaporation ponds into tidal marsh in South San Francisco Bay, California. However, large numbers of waterbirds use these ponds annually as nesting and foraging habitat. Islands within ponds are particularly important habitat for nesting, foraging,...
Maximizing the social and ecological value of Cape Romain National Wildlife Refuge, South Carolina as the effects of global change processes increase.
Raye Nilius, Sarah Dawsey, Mitchell J. Eaton, Julien Martin, Stephanie S. Romanach, Suzanne Baird, Michael Bryant, David J. Case, Fred A. Johnson, Gerard McMahon, Nancy Pau, Elizabeth Pienaar, Mary Ratnaswamy, Steven Seibert, Pamela Wingrove, Nathan J. Wood
2014, Conference Paper, Structured decision making workshop - Report
Coastal ecosystems in the eastern U.S. have been severely altered by processes associated with human development, including drainage of coastal wetlands, changes in hydrology that alter sediment and freshwater delivery to the coast, land clearing, agricultural and forestry activity, and the construction of seawalls and other structures that “harden” the...
Northwest
Philip W. Mote, Amy K. Snover, Susan M. Capalbo, Sanford D. Eigenbrode, Patricia Glick, Jeremy S. Littell, Richard Raymondi, Spencer Reeder
2014, Book chapter, National Climate Assessment
Key Messages 1. Changes in the timing of streamflow related to changing snowmelt are already observed and will continue, reducing the supply of water for many competing demands and causing far-reaching ecological and socioeconomic consequences. 2. In the coastal zone, the effects of sea level rise, erosion, inundation, threats to...
Yellowstone River Compact Commission sixty-third annual report, 2014
Wayne R. Berkas
2014, Report
No abstract available....
Sharp increase in central Oklahoma seismicity 2009-2014 induced by massive wastewater injection
Kathleen M. Keranen, Geoffrey A. Abers, Matthew Weingarten, Barbara A. Bekins, Shemin Ge
2014, Science (345) 448-451
Unconventional oil and gas production provides a rapidly growing energy source; however high-producing states in the United States, such as Oklahoma, face sharply rising numbers of earthquakes. Subsurface pressure data required to unequivocally link earthquakes to injection are rarely accessible. Here we use seismicity and hydrogeological models to show that...
Land-use and land-cover change
Daniel G. Brown, Colin Polsky, Paul V. Bolstad, Samuel D. Brody, David Hulse, Roger Kroh, Thomas Loveland, Allison Thompson
J. M. Melillo, Terese Richmond, G.W. Yohe, editor(s)
2014, Report, Climate change impacts in the United States: The third national climate assessment
No abstract available....
Paleoclimate
Patrick J. Bartlein, Steven W. Hostetler, Jay R. Alder
G. Ohring, editor(s)
2014, Book chapter, Climate Change in North America
As host to one of the major continental-scale ice sheets, and with considerable spatial variability of climate related to its physiography and location, North America has experienced a wide range of climates over time. The aim of this chapter is to review the history of those climate variations, focusing in...
Call broadcasting and automated recorders as tools for anuran surveys in a subarctic tundra landscape
R. Nicholas Mannan, Gad Perry, David E. Andersen, Clint W. Boal
2014, The Journal of North American Herpetology (1) 47-52
Relatively little is known about population ecology of anurans in arctic and subarctic tundra regions, in part because it is difficult to survey anurans in these landscapes. Anuran survey protocols developed for temperate regions have limited applicability in arctic and subarctic tundra landscapes, which may lack roads and vehicle access,...
A review of pipe and bamboo artificial refugia as sampling tools in anuran studies
Brad M. Glorioso, J. Hardin Waddle
2014, Herpetological Conservation and Biology (9) 609-625
Artificial pipe-like refugia have been used for more than 40 years in anuran studies, and have captured 28 species, primarily (82%) hylid treefrogs. Early pipe-like refugia were made using cut pieces of bamboo in the tropical forests of Puerto Rico, but most recent studies have used synthetic pipes and have...
Optimally managing water resources in large river basins for an uncertain future
Jr. Edwin A. Roehl, Paul Conrads
2014, Book
Managers of large river basins face conflicting needs for water resources such as wildlife habitat, water supply, wastewater assimilative capacity, flood control, hydroelectricity, and recreation. The Savannah River Basin for example, has experienced three major droughts since 2000 that resulted in record low water levels in its reservoirs, impacting local...
Introduction: Hazard mapping
Rex L. Baum, Toyohiko Miyagi, Saro Lee, Oleksandr M Trofymchuk
2014, Book chapter, Landslide science for a safer geoenvironment
Twenty papers were accepted into the session on landslide hazard mapping for oral presentation. The papers presented susceptibility and hazard analysis based on approaches ranging from field-based assessments to statistically based models to assessments that combined hydromechanical and probabilistic components. Many of the studies have taken advantage of increasing availability...
Volcanoes of the passive margin: The youngest magmatic event in eastern North America
Sarah E Mazza, Esteban Gazel, Elizabeth A Johnson, Michael J. Kunk, Ryan J. McAleer, James A Spotila, Michael Bizimis, Drew S Coleman
2014, Geology (42) 483-486
The rifted eastern North American margin (ENAM) provides important clues to the long-term evolution of continental margins. An Eocene volcanic swarm exposed in the Appalachian Valley and Ridge Province of Virginia and West Virginia (USA) contains the youngest known igneous rocks in the ENAM. These magmas provide the only window...
