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...
Development of a quantitative assay to measure expression of transforming growth factor ß (TGF-ß) in Lost River sucker (Deltistes luxatus) and shortnose sucker (Chasmistes brevirostris) and evaluation of potential pitfalls in use with field-collected samples
Laura S. Robertson, Christopher A. Ottinger, Summer M. Burdick, Scott P. VanderKooi
2012, Fish and Shellfish Immunology (32) 890-898
The Nature Conservancy is in the process of restoring the Williamson River Delta in an attempt to recreate important juvenile habitat for the endangered shortnose sucker Chasmistes brevirostris and the endangered Lost River sucker Deltistes luxatus. Measurement of TGF-β mRNA expression level was one of the indicators chosen to evaluate...
Development of polysomic microsatellite markers for characterization of population structuring and phylogeography in the shortnose sturgeon (Acipenser brevirostrum)
Anne P. Henderson, Tim L. King
2012, Conservation Genetics Resources (4) 853-859
Shortnose sturgeon Acipenser brevirostrum is an endangered polyploid fish species for which no nuclear DNA markers previously existed. To address this need, 86 polysomic loci were developed and characterized in 20 A. brevirostrum from five river systems and eight members (parents and six progeny) of a captive-bred family. All markers...
Industrial garnet
D.W. Olson
2012, Mining Engineering (64) 64-64
Garnet has been used as a gemstone since the Bronze Age. However, garnet's angular fractures, relatively high hardness and specific gravity, chemical inertness, and nontoxicity make it ideal for many industrial applications. It is also free of crystalline silica and can be recycled....
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...
Glass wool filters for concentrating waterborne viruses and agricultural zoonotic pathogens
Hana T. Millen, Jordan C. Gonnering, Ryan K. Berg, Susan K. Spencer, William E. Jokela, John M. Pearce, Jackson S. Borchardt, Mark A. Borchardt
2012, Journal of Visualized Experiments (61)
The key first step in evaluating pathogen levels in suspected contaminated water is concentration. Concentration methods tend to be specific for a particular pathogen group, for example US Environmental Protection Agency Method 1623 for Giardia and Cryptosporidium1, which means multiple methods are required if the sampling program is targeting more...
Geomagnetic detection of the sectorial solar magnetic field and the historical peculiarity of minimum 23-24
Jeffrey J. Love, J. Rigler
2012, Geophysical Research Letters (39)
[1] Analysis is made of the geomagnetic-activityaaindex covering solar cycle 11 to the beginning of 24, 1868–2011. Autocorrelation shows 27.0-d recurrent geomagnetic activity that is well-known to be prominent during solar-cycle minima; some minima also exhibit a smaller amount of 13.5-d recurrence. Previous work has shown that the recent solar...
Habitat use and movement patterns of Northern Pintails during spring in northern Japan: the importance of agricultural lands
Noriyuki M. Yamaguchi, Jerry W. Hupp, Paul L. Flint, John M. Pearce, Yusuke Shigeta, Tetsuo Shimada, Emiko N. Hiraoka, Hiroyoshi Higuchi
2012, Journal of Field Ornithology (83) 141-153
From 2006 to 2009, we marked 198 Northern Pintails (Anas acuta) with satellite transmitters on their wintering areas in Japan to study their migration routes and habitat use in spring staging areas. We hypothesized that the distribution of pintails during spring staging was influenced by patterns of land use and...
Demand surge following earthquakes
Anna H. Olsen
2012, Conference Paper, Proceedings of the 15th World Conference on Earthquake Engineering (15WCEE), Lisbon, Portugal, September 24-28
Demand surge is understood to be a socio-economic phenomenon where repair costs for the same damage are higher after large- versus small-scale natural disasters. It has reportedly increased monetary losses by 20 to 50%. In previous work, a model for the increased costs of reconstruction labor and materials was developed...
Dwarf char, a new form of chars (the genus Salvelinus) in Lake Kronotskoe
S.D. Pavlov, E.A. Pivovarov, Carl O. Ostberg
2012, Doklady Biological Sciences (442) 20-23
Lake Kronotskoe is situated in the Kronotskii State Nature Reserve and is a unique natural heritage of Kamchatka. The lake–river system of the reserve includes numerous springs and small streams and three large inflowing rivers, Listvennichnaya, Unana, and Uzon, which form the main bays of...
Assessing California groundwater susceptibility using trace concentrations of halogenated volatile organic compounds
Daniel A. Deeds, Justin T. Kulongoski, Kenneth Belitz
2012, Environmental Science & Technology (46) 13128-13135
Twenty-four halogenated volatile organic compounds (hVOCs) and SF6 were measured in groundwater samples collected from 312 wells across California at concentrations as low as 10–12 grams per kilogram groundwater. The hVOCs detected are predominately anthropogenic (i.e., “ahVOCs”) and as such their distribution delineates where groundwaters are impacted and susceptible to...
Hillslope hydrology and stability
Ning Lu, Jonathan Godt
2012, Book
Landslides are caused by a failure of the mechanical balance within hillslopes. This balance is governed by two coupled physical processes: hydrological or subsurface flow and stress. The stabilizing strength of hillslope materials depends on effective stress, which is diminished by rainfall. This book presents a cutting-edge quantitative approach to...
Allowable levels of take for the trade in Nearctic songbirds
Fred A. Johnson, Matthew A.H. Walters, G. Scott Boomer
2012, Ecological Applications (22) 1114-1130
The take of Nearctic songbirds for the caged-bird trade is an important cultural and economic activity in Mexico, but its sustainability has been questioned. We relied on the theta-logistic population model to explore options for setting allowable levels of take for 11 species of passerines that were subject to legal...
Holocene behavior of the Brigham City segment: implications for forecasting the next large-magnitude earthquake on the Wasatch fault zone, Utah
Stephen F. Personius, Christopher B. DuRoss, Anthony J. Crone
2012, Bulletin of the Seismological Society of America (102) 2265-2281
The Brigham City segment (BCS), the northernmost Holocene‐active segment of the Wasatch fault zone (WFZ), is considered a likely location for the next big earthquake in northern Utah. We refine the timing of the last four surface‐rupturing (~Mw 7) earthquakes at several sites near Brigham City (BE1, 2430±250; BE2, 3490±180;...
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...
Assessing the validity of station location assumptions made in the calculation of the geomagnetic disturbance index, Dst
Jennifer Gannon
2012, Space Weather (10)
In this paper, the effects of the assumptions made in the calculation of the Dst index with regard to longitude sampling, hemisphere bias, and latitude correction are explored. The insights gained from this study will allow operational users to better understand the local implications of the Dst index and will...
Extraordinary distance limits of landslides triggered by the 2011 Mineral, Virginia, earthquake
Randall W. Jibson, Edwin L. Harp
2012, Bulletin of the Seismological Society of America (102) 2368-2377
The 23 August 2011 Mineral, Virginia, earthquake (Mw 5.8) was the largest to strike the eastern U.S. since 1897 and was felt over an extraordinarily large area. Although no large landslides occurred, the shaking did trigger many rock and soil falls from steep river banks and natural cliffs in the...
2014 Update of the United States National Seismic Hazard Maps
M.D. Petersen, C.S. Mueller, K. M. Haller, M. Moschetti, S. C. Harmsen, E. H. Field, K.S. Rukstales, Y. Zeng, D. M. Perkins, P. Powers, S. Rezaeian, N. Luco, A. Olsen, R. Williams
2012, Conference Paper, Proceedings of the 15th World Conference on Earthquake Engineering (15WCEE), Lisbon, Portugal, September 24-28
The U.S. National Seismic Hazard Maps are revised every six years, corresponding with the update cycle of the International Building Code. These maps cover the conterminous U.S. and will be updated in 2014 using the best-available science that is obtained from colleagues at regional and topical workshops, which are convened...
Resolving hyporheic and groundwater components of streambed water flux
Aditi S. Bhaskar, Judson W. Harvey, Eric J. Henry
2012, Water Resources Research (48)
Hyporheic and groundwater fluxes typically occur together in permeable sediments beneath flowing stream water. However, streambed water fluxes quantified using the thermal method are usually interpreted as representing either groundwater or hyporheic fluxes. Our purpose was to improve understanding of co-occurring groundwater and hyporheic fluxes using streambed temperature measurements and...
Demographics, diet, movements, and survival of an isolated, unmanaged raccoon Procyon lotor (Procyonidae, Carnivora) population on the Outer Banks of North Carolina
Arielle Waldstein Parsons, Theodore R. Simons, Allan F. O’Connell, Michael K. Stoskopf
2012, Mammalia (77) 21-30
Raccoons (Procyon lotor) are highly adaptable meso-carnivores that inhabit many environments, including the Atlantic barrier islands, where their role as predators of declining, beach-nesting bird and turtle species is of particular interest. Population models that improve our understanding of predator-prey dynamics are receiving increasing attention in the literature; however, their...
Abiotic and biotic controls of cryptobenthic fish assemblages across a Caribbean seascape
A.R. Harborne, H.L. Jelks, W. F. Smith-Vaniz, L.A. Rocha
2012, Coral Reefs (31) 977-990
The majority of fish studies on coral reefs consider only non-cryptic species and, despite their functional importance, data on cryptic species are scarce. This study investigates inter-habitat variation in Caribbean cryptobenthic fishes by re-analysing a comprehensive data set from 58 rotenone stations around Buck Island, U.S. Virgin Islands. Boosted regression...
Assessing confidence in Pliocene sea surface temperatures to evaluate predictive models
Harry J. Dowsett, Marci M. Robinson, Alan M. Haywood, Daniel J. Hill, Aisling M. Dolan, Danielle K. Stoll, Wing-Le Chan, Ayako Abe-Ouchi, Mark A. Chandler, Nan A. Rosenbloom, Bette L. Otto-Bliesner, Fran J. Bragg, Daniel J. Lunt, Kevin M. Foley, Christina R. Riesselman
2012, Nature Climate Change (2) 365-371
In light of mounting empirical evidence that planetary warming is well underway, the climate research community looks to palaeoclimate research for a ground-truthing measure with which to test the accuracy of future climate simulations. Model experiments that attempt to simulate climates of the past serve to identify both similarities and...
Temporal evolution of stable water isotopologues in cloud droplets in a hill cap cloud in central Europe (HCCT-2010)
J.K. Spiegel, F. Aemisegger, M. Scholl, F.G. Wienhold, J.L. Collett Jr., T. Lee, D. van Pinxteren, S. Mertes, A. Tilgner, H. Herrmann, Roland A. Werner, N. Buchmann, W. Eugster
2012, Atmospheric Chemistry and Physics (12) 11679-11694
In this work, we present the first study resolving the temporal evolution of δ2H and δ18O values in cloud droplets during 13 different cloud events. The cloud events were probed on a 937 m high mountain chain in Germany in the framework of the Hill Cap Cloud Thuringia 2010 campaign...
Effects of low-density feeding on elk–fetus contact rates on Wyoming feedgrounds
Tyler G. Creech, Paul C. Cross, Brandon M. Scurlock, Eric Maichak, Jared D. Rogerson, John C. Henningsen, Scott Creel
2012, Journal of Wildlife Management (76) 877-886
High seroprevalance for Brucella abortus among elk on Wyoming feedgrounds suggests that supplemental feeding may influence parasite transmission and disease dynamics by altering the rate at which elk contact infectious materials in their environment. We used proximity loggers and video cameras to estimate rates of elk-to-fetus contact (the primary source...
Physical controls and predictability of stream hyporheic flow evaluated with a multiscale model
Susa H. Stonedahl, Judson W. Harvey, Joel Detty, Antoine Aubeneau, Aaron I. Packman
2012, Water Resources Research (48)
Improved predictions of hyporheic exchange based on easily measured physical variables are needed to improve assessment of solute transport and reaction processes in watersheds. Here we compare physically based model predictions for an Indiana stream with stream tracer results interpreted using the Transient Storage Model (TSM). We parameterized the physically...
