Improving PAGER's real-time earthquake casualty and loss estimation toolkit: a challenge
K. S. Jaiswal, D.J. Wald
2012, Conference Paper, The 15th World Conference on Earthquake Engineering: September 24-28, 2012, Lisbon, Portugal
We describe the on-going developments of PAGER’s loss estimation models, and discuss value-added web content that can be generated related to exposure, damage and loss outputs for a variety of PAGER users. These developments include identifying vulnerable building types in any given area, estimating earthquake-induced damage and loss statistics by...
Effects of climate change and population growth on the transboundary Santa Cruz aquifer
Christopher A. Scott, Sharon Megdal, Lucas Antonio Oroz, James Callegary, Prescott Vandervoet
2012, Climate Research (51) 159-170
The USA and Mexico have initiated comprehensive assessment of 4 of the 18 aquifers underlying their 3000 km border. Binational management of groundwater is not currently proposed. University and agency researchers plus USA and Mexican federal, state, and local agency staff have collaboratively identified key challenges facing the Santa Cruz...
John B. "Jack" Townshend (1927-2012)
Jeffrey J. Love, Carol A. Finn
2012, Eos, Transactions, American Geophysical Union (93) 524-525
Jack Townshend, geophysicist and dedicated public servant, died on 13 August 2012 in Fairbanks, Alaska. He was 85. Jack's career with the federal government, most of it with the national magnetic observatory program, spanned more than six solar cycles of time, and he retired only days before his death. The...
Estimating discharge measurement uncertainty using the interpolated variance estimator
T. Cohn, J. Kiang, R. Mason Jr.
2012, Journal of Hydraulic Engineering (139) 502-510
Methods for quantifying the uncertainty in discharge measurements typically identify various sources of uncertainty and then estimate the uncertainty from each of these sources by applying the results of empirical or laboratory studies. If actual measurement conditions are not consistent with those encountered in the empirical or laboratory studies, these...
Changing restoration rules: exotic bivalves interact with residence time and depth to control phytoplankton productivity
Lisa V. Lucas, Janet K. Thompson
2012, Ecosphere (3)
Non-native species are a prevalent ecosystem stressor that can interact with other stressors to confound resource management and restoration. We examine how interactions between physical habitat attributes and a particular category of non-native species (invasive bivalves) influence primary production in aquatic ecosystems. Using mathematical models, we show how intuitive relationships...
From Caprio's lilacs to the USA National Phenology Network
Mark D. Schwartz, Julio L. Betancourt, Jake F. Weltzin
2012, Frontiers in Ecology and the Environment (10) 324-327
Continental-scale monitoring is vital for understanding and adapting to temporal changes in seasonal climate and associated phenological responses. The success of monitoring programs will depend on recruiting, retaining, and managing members of the public to routinely collect phenological observations according to standardized protocols. Here, we trace the development of infrastructure...
A tale of two land uses in the American West: rural residential growth and energy development
Timothy J. Assal, Jessica M. Montag
2012, Journal of Maps (8) 327-333
This paper describes a spatiotemporal land use map for a rural county in the western United States. Sublette County, Wyoming has undergone recent land use change in the form of heightened rural residential development on private land and increased energy development on both public and private land. In this study...
Invertebrate assemblages in the lower Klamath River, with reference to Manayunkia speciosa
David M. Malakauskas, Margaret A. Wilzbach
2012, California Fish and Game (98) 214-235
The freshwater polychaete, Manayunkia speciosa Leidy (Canalipalpata Sabellidae), is the intermediate host for two myxozoan pathogens (Ceratomyxa shasta and Parvicapsula minibicornis) that cause substantial mortalities of juvenile salmon in the Pacific Northwest, particularly in the Klamath River below Iron Gate Dam in California. Information on the distribution of M. speciosa...
Application of radiotelemetry to wildlife conservation in mountainous Asian landscapes
M.S. Mitchell, L.N. Rich, L. S. Mills
2012, Book chapter, Wildlife Research Techniques in Rugged Mountainous Asian Landscapes
Heat flow in vapor dominated areas of the Yellowstone Plateau volcanic field: implications for the thermal budget of the Yellowstone Caldera
Shaul Hurwitz, Robert Harris, Cynthia Anne Werner, Fred Murphy
2012, Journal of Geophysical Research B: Solid Earth (117)
Characterizing the vigor of magmatic activity in Yellowstone requires knowledge of the mechanisms and rates of heat transport between magma and the ground surface. We present results from a heat flow study in two vapor dominated, acid-sulfate thermal areas in the Yellowstone Caldera, the 0.11 km2 Obsidian Pool Thermal Area...
A meeting of the waters: interdisciplinary challenges and opportunities in tidal rivers
Scott H. Ensign, Gregory B. Noe, Cliff R. Hupp, Sergio Fagherazzi
2012, Eos, Transactions, American Geophysical Union (95) 455-456
At the interface of estuarine tides and freshwater rivers lie wetland and aquatic ecosystems, which experience dramatic effects of sea level rise. There, nontidal channels and riparian floodplains are transforming into tidal ecosystems, and tidal freshwater ecosystems are receiving increasing salinity. These river-floodplain systems have both fluvial characteristics, including meandering...
A terrestrial lidar-based workflow for determining three-dimensional slip vectors and associated uncertainties
Peter O. Gold, Eric Cowgill, Oliver Kreylos, Ryan D. Gold
2012, Geosphere (8) 431-442
Three-dimensional (3D) slip vectors recorded by displaced landforms are difficult to constrain across complex fault zones, and the uncertainties associated with such measurements become increasingly challenging to assess as landforms degrade over time. We approach this problem from a remote sensing perspective by using terrestrial laser scanning (TLS) and 3D...
Radiometric calibration of the Landsat MSS sensor series
Dennis L. Helder, Sadhana Karki, Rajendra Bhatt, Esad Micijevik, David Aaron, Benjamin Jasinski
2012, IEEE Transactions on Geoscience and Remote Sensing (50) 2380-2399
Multispectral remote sensing of the Earth using Landsat sensors was ushered on July 23, 1972, with the launch of Landsat-1. Following that success, four more Landsat satellites were launched, and each of these carried the Multispectral Scanner System (MSS). These five sensors provided the only consistent multispectral space-based imagery of...
Bioenergetic response by steelhead to variation in diet, thermal habitat, and climate in the north Pacific Ocean
Margaret E. Atcheson, Katherine W. Myers, David A. Beauchamp, Nathan J. Mantua
2012, Transactions of the American Fisheries Society (141) 1081-1096
Energetic responses of steelhead Oncorhynchus mykiss to climate-driven changes in marine conditions are expected to affect the species’ ocean distribution, feeding, growth, and survival. With a unique 18-year data series (1991–2008) for steelhead sampled in the open ocean, we simulated interannual variation in prey consumption and growth efficiency of steelhead...
Morphological evidence for discrete stocks of yellow perch in Lake Erie
Patrick M. Kocovsky, Carey T. Knight
2012, Journal of Great Lakes Research (38) 534-539
Identification and management of unique stocks of exploited fish species are high-priority management goals in the Laurentian Great Lakes. We analyzed whole-body morphometrics of 1430 yellow perch Perca flavescens captured during 2007–2009 from seven known spawning areas in Lake Erie to determine if morphometrics vary among sites and management units...
Multiple functions of a multi-component mating pheromone in sea lamprey Petromyzon marinus
N.S. Johnson, S.-S. Yun, T.J. Buchinger, W. Li
2012, Journal of Fish Biology (80) 538-554
The role of the C24 sulphate in the mating pheromone component, 7α,12α,24-trihydroxy-5α-cholan-3-one 24-sulphate (3kPZS), to specifically induce upstream movement in ovulated female sea lampreys Petromyzon marinus was investigated. 7α,12α-dihydroxy-5α-cholan-3-one 24-oic acid (3kACA), a structurally similar bile acid released by spermiated males, but lacking the C24 sulphate ester, was tested in...
Estimating risks to aquatic life using quantile regression
Travis S. Schmidt, William H. Clements, Brian S. Cade
2012, Freshwater Science (31) 709-723
One of the primary goals of biological assessment is to assess whether contaminants or other stressors limit the ecological potential of running waters. It is important to interpret responses to contaminants relative to other environmental factors, but necessity or convenience limit quantification of all factors that influence ecological potential. In...
Gypsum
R.D. Crangle Jr.
2012, Mining Engineering (64) 59-59
The United States is the world's fourth leading producer and consumer of gypsum. Production of gypsum in the U.S. during 2011 was estimated to be 9.4 Mt (103 million st), an increase of 6 percent compared with 2010 production. The average price of mined crude gypsum was $7/t ($6.35/st). Synthetic...
Rare earths, the lanthanides, yttrium and scandium
G. Bedinger, D. Bleiwas
2012, Mining Engineering (64) 86-88
In 2011, rare earths were recovered from bastnasite concentrates at the Mountain Pass Mine in California. Consumption of refined rare-earth products decreased in 2011 from 2010. U.S. rare-earth imports originated primarily from China, with lesser amounts from Austria, Estonia, France and Japan. The United States imported all of its demand...
Borates
R.D. Crangle Jr.
2012, Mining Engineering (64) 39-40
Four minerals represent 90 percent of the borates used by industry worldwide — the sodium borates, tincal and kernite; the calcium borate, colemanite; and the sodium-calcium borate, ulexite....
Relationship between mid-water trawling effort and catch composition uncertainty in two large lakes (Huron and Michigan) dominated by alosines, osmerids, and coregonines
David M. Warner, Randall M. Claramunt, Jeffrey S. Schaeffer, Daniel L. Yule, Tom R. Hrabik, Bernie Peintka, Lars G. Rudstam, Jeffrey D. Holuszko, Timothy P. O’Brien
2012, Fisheries Research (123-124) 62-69
Because it is not possible to identify species with echosounders alone, trawling is widely used as a method for collecting species and size composition data for allocating acoustic fish density estimates to species or size groups. In the Laurentian Great Lakes, data from midwater trawls are commonly used for such...
Geologic processes influence the effects of mining on aquatic ecosystems
Travis S. Schmidt, William H. Clements, Richard B. Wanty, Philip L. Verplanck, Stan E. Church, Carma A. San Juan, David L. Fey, Barnaby W. Rockwell, Ed H. DeWitt, Terry L. Klein
2012, Ecological Applications (22) 870-879
Geologic processes strongly influence water and sediment quality in aquatic ecosystems but rarely are geologic principles incorporated into routine biomonitoring studies. We test if elevated concentrations of metals in water and sediment are restricted to streams downstream of mines or areas that may discharge mine wastes. We surveyed 198 catchments...
The resilience and functional role of moss in boreal and arctic ecosystems
M. Turetsky, B. Bond-Lamberty, E.S. Euskirchen, J. J. Talbot, S. Frolking, A. D. McGuire, E.S. Tuittila
2012, New Phytologist (196) 49-67
Mosses in northern ecosystems are ubiquitous components of plant communities, and strongly influence nutrient, carbon and water cycling. We use literature review, synthesis and model simulations to explore the role of mosses in ecological stability and resilience. Moss community responses to disturbance showed all possible responses (increases, decreases, no change)...
Geologic setting, sedimentary architecture, and paragenesis of the Mesoproterozoic sediment-hosted Sheep Creek Cu-Co-Ag deposit, Helena embayment, Montana
Garth E. Graham, Murray W. Hitzman, Jerry Zieg
2012, Economic Geology (107) 1115-1141
The northern margin of the Helena Embayment contains extensive syngenetic to diagenetic massive pyrite horizons that extend over 25 km along the Volcano Valley-Buttress fault zone and extend up to 8 km basinward (south) within the Mesoproterozoic Newland Formation. The Sheep Creek Cu-Co deposit occurs within a structural block along...
Fluid‐driven seismicity response of the Rinconada fault near Paso Robles, California, to the 2003 M 6.5 San Simeon earthquake
Jeanne L. Hardebeck
2012, Bulletin of the Seismological Society of America (102) 377-390
The 2003 M 6.5 San Simeon, California, earthquake caused significant damage in the city of Paso Robles and a persistent cluster of aftershocks close to Paso Robles near the Rinconada fault. Given the importance of secondary aftershock triggering in sequences of large events, a concern is whether this cluster of...
