Converting HAZUS capacity curves to seismic hazard-compatible building fragility functions: effect of hysteretic models
Hyeuk Ryu, Nicolas Luco, Jack W. Baker, Erdem Karaca
2008, Conference Paper, The 14th world conference on earthquake engineering: innovation, practice, safety: October 12-17, 2008, Beijing, China
A methodology was recently proposed for the development of hazard-compatible building fragility models using parameters of capacity curves and damage state thresholds from HAZUS (Karaca and Luco, 2008). In the methodology, HAZUS curvilinear capacity curves were used to define nonlinear dynamic SDOF models that were subjected to the nonlinear time...
Metals fate and transport modelling in streams and watersheds: state of the science and USEPA workshop review
B.S. Caruso, T.J. Cox, Robert L. Runkel, M.L. Velleux, Kenneth E. Bencala, D. Kirk Nordstrom, P.Y. Julien, B. A. Butler, Charles N. Alpers, A. Marion, Kathleen S. Smith
2008, Hydrological Processes (22) 4011-4021
Metals pollution in surface waters from point and non-point sources (NPS) is a widespread problem in the United States and worldwide (Lofts et al., 2007; USEPA, 2007). In the western United States, metals associated with acid mine drainage (AMD) from hardrock mines in mountainous areas impact aquatic ecosystems and human...
Top 10 principles for designing healthy coastal ecosystems like the Salish Sea
Joseph K. Gaydos, Leslie Dierauf, Grant Kirby, Deborah Brosnan, Kirsten Gilardi, Gary E. Davis
2008, EcoHealth (5) 460-471
Like other coastal zones around the world, the inland sea ecosystem of Washington (USA) and British Columbia (Canada), an area known as the Salish Sea, is changing under pressure from a growing human population, conversion of native forest and shoreline habitat to urban development, toxic contamination of sediments and species,...
Long-term dynamics of leafy spurge (Euphorbia esula) and its biocontrol agent, flea beetles in the genus Aphthona
Diane L. Larson, James B. Grace, Jennifer L. Larson
2008, Biological Control (47) 250-256
Three flea beetle species (Aphthona spp.), first introduced into North America in 1988, have come to be regarded as effective biological control organisms for leafy spurge (Euphorbia esula). The black flea beetles (Aphthona lacertosa and A. czwalinae) in particular have been shown to cause reductions in leafy spurge stem counts...
Hematite spherules at Meridiani: results from MI, Mini-TES, and Pancam
W. M. Calvin, J.D. Shoffner, J. R. Johnson, A.H. Knoll, J.M. Pocock, S. W. Squyres, C.M. Weitz, R. E. Arvidson, J.F. Bell III, P. R. Christensen, P. A. de Souza Jr., W. H. Farrand, T.D. Glotch, Kenneth E. Herkenhoff, B.L. Jolliff, A.T. Knudson, S. M. McLennan, A.D. Rogers, S.D. Thompson
2008, Journal of Geophysical Research (113)
We report on observations of hematite‐bearing spherules at Meridiani Planum made using the Microscopic Imager (MI), Mini‐Thermal Emission Spectrometer (Mini‐TES), and Panoramic Camera (Pancam) instruments on the Mars Exploration Rover Opportunity. Spherules were observed on soil surfaces and in outcrop rocks, both on undisturbed surfaces and in abraded surfaces ground...
Releases of whooping cranes to the Florida nonmigratory flock: a structured decision-making approach: report to the International Whooping Crane Recovery Team, September 22, 2008
Clinton T. Moore, Sarah J. Converse, Martin J. Folk, Robin Boughton, Bill Brooks, John B. French, Timothy O’Meara, Michael Putnam, James Rodgers, Marilyn Spalding
2008, FWRI Inhouse Report 2008-009
We used a structured decision-making approach to inform the decision of whether the Florida Fish and Wildlife Conservation Commission should request of the International Whooping Crane Recovery Team that additional whooping crane chicks be released into the Florida Non-Migratory Population (FNMP). Structured decision-making is an application of decision science that...
Origin and paleoclimatic significance of late Quaternary loess in Nebraska: Evidence from stratigraphy, chronology, sedimentology, and geochemistry
Daniel R. Muhs, E. Arthur Bettis III, John N. Aleinikoff, John P. McGeehin, Jossh Beann, Gary Skipp, Brian D. Marshall, Helen M. Roberts, William C. Johnson, Rachel Benton
2008, GSA Bulletin (120) 1378-1407
Loess is one of the most extensive surficial geologic deposits in midcontinental North America, particularly in the central Great Plains region of Nebraska. Last-glacial-age loess (Peoria Loess) reaches its greatest known thickness in the world in this area. New stratigraphic, geochronologic, mineralogic, and geochemical data yield information about the age...
Isotopic evidence for the diversity of late Quaternary loess in Nebraska: Glaciogenic and nonglaciogenic sources
John N. Aleinikoff, Daniel R. Muhs, E. Arthur Bettis III, William C. Johnson, C. Mark Fanning, Rachel Benton
2008, GSA Bulletin (120) 1362-1377
Pb isotope compositions of detrital K-feldspars and U-Pb ages of detrital zircons are used as indicators for determining the sources of Peoria Loess deposited during the last glacial period (late Wisconsin, ca. 25–14 ka) in Nebraska and western Iowa. Our new data indicate that only loess adjacent to the Platte...
Age, distribution, and stratigraphic relationship of rock units in the San Joaquin Basin Province, California: Chapter 5 in Petroleum systems and geologic assessment of oil and gas in the San Joaquin Basin Province, California
Allegra Hosford Scheirer, Leslie B. Magoon
2008, Professional Paper 1713-5
The San Joaquin Basin is a major petroleum province that forms the southern half of California’s Great Valley, a 700-km-long, asymmetrical basin that originated between a subduction zone to the west and the Sierra Nevada to the east. Sedimentary fill and tectonic structures of the San Joaquin Basin record the...
Co-precipitation of dissolved organic matter by calcium carbonate in Pyramid Lake, Nevada
Jerry A. Leenheer, Michael M. Reddy
2008, Annals of Environmental Science (2) 11-25
Our previous research has demonstrated that dissolved organic matter (DOM) influences calcium carbonate mineral formation in surface and ground water. To better understand DOM mediation of carbonate precipitation and DOM co-precipitation and/or incorporation with carbonate minerals, we characterized the content and speciation of DOM in carbonate minerals and in the...
Modeling landslide recurrence in Seattle, Washington, USA
Diana Salciarini, Jonathan W. Godt, William Z. Savage, Rex L. Baum, Pietro Conversini
2008, Engineering Geology (102) 227-237
To manage the hazard associated with shallow landslides, decision makers need an understanding of where and when landslides may occur. A variety of approaches have been used to estimate the hazard from shallow, rainfall-triggered landslides, such as empirical rainfall threshold methods or probabilistic methods based on historical records. The wide...
Radargrammetry on three planets
Randolph L. Kirk, Elpitha Howington-Kraus
Jun Chen, Jie Jiang, Shailesh Nayak, editor(s)
2008, Conference Paper, Proceedings: XXIst ISPRS Congress, Technical Commission IV
Synthetic Aperture Radar (SAR) can provide useful images in situations where passive optical imaging cannot, either because the microwaves used can penetrate atmospheric clouds, because active imaging can "see in the dark," or both. We have participated in the NASA Magellan mission to Venus in the 1990s and the current...
Assessing contribution of DOC from sediments to a drinking-water reservoir using optical profiling
Bryan D. Downing, Brian A. Bergamaschi, David G. Evans, Emmanuel Boss
2008, Lake and Reservoir Management (24) 381-391
Understanding the sources of dissolved organic carbon (DOC) in drinking-water reservoirs is an important management issue because DOC may form disinfection by-products, interfere with disinfection, or increase treatment costs. DOC may be derived from a host of sources-algal production of DOC in the reservoir, marginal production of DOC from mucks...
Anatomy of a shoreface sand ridge revisted using foraminifera: False Cape Shoals, Virginia/North Carolina inner shelf
Marci M. Robinson, Randolph A. McBride
2008, Continental Shelf Research (17) 2428-2441
Certain details regarding the origin and evolution of shelf sand ridges remain elusive. Knowledge of their internal stratigraphy and microfossil distribution is necessary to define the origin and to determine the processes that modify sand ridges. Fourteen vibracores from False Cape Shoal A, a well-developed shoreface-attached sand ridge on the...
Columbia Hills, Mars: aeolian features seen from the ground and orbit
Ronald Greeley, Patrick L. Whelley, Lynn Neakrase, Raymond E. Arvidson, Nathan T. Bridges, Nathalie A. Cabrol, Phillip R. Christensen, Kaichang Di, Daniel J. Foley, Matthew P. Golombek, Kenneth E. Herkenhoff, Amy Knudson, Ruslan O. Kuzmin, Ron Li, Timothy Michaels, Steven W. Squyres, Robert Sullivan, Shane D. Thompson
2008, Journal of Geophysical Research E: Planets (113)
Abundant wind-related features occur along Spirit's traverse into the Columbia Hills over the basaltic plains of Gusev Crater. Most of the windblown sands are probably derived from weathering of rocks within the crater, and possibly from deposits associated with Ma'adim Vallis. Windblown particles act as agents of abrasion, forming ventifacts,...
Cartography for lunar exploration: 2008 status and mission plans
Randolph L. Kirk, Brent A. Archinal, Lisa R. Gaddis, Mark R. Rosiek
Jun Chen, Jie Jiang, Shailesh Nayak, editor(s)
2008, Conference Paper, Proceedings: XXIst ISPRS Congress, Technical Commission IV
The initial spacecraft exploration of the Moon in the 1960s-70s yielded extensive data, primarily in the form of film and television images, which were used to produce a large number of hardcopy maps by conventional techniques. A second era of exploration, beginning in the early 1990s, has produced digital data...
A 26 million year gap in the central Arctic record at the greenhouse-icehouse transition: Looking for clues
Francesca Sangiorgi, Hans-Juergen Brumsack, Debra A. Willard, Stefan Schouten, Catherine E. Stickley, Matthew O’Regan, Gert-Jan Reichart, Jaap S. Sinninghe Damste, Henk Brinkhuis
2008, Paleoceanography (23)
The Cenozoic record of the Lomonosov Ridge (central Arctic Ocean) recovered during Integrated Ocean Drilling Program (IODP) Expedition 302 revealed an unexpected 26 Ma hiatus, separating middle Eocene (∼44.4 Ma) from lower Miocene sediments (∼18.2 Ma). To elucidate the nature of this unconformity, we performed a multiproxy palynological (dinoflagellate cysts,...
Coupled semivariogram uncertainty of hydrogeological and geophysical data on capture zone uncertainty analysis
A. Rahman, F.T.-C. Tsai, C.D. White, C. S. Willson
2008, Journal of Hydrologic Engineering (13) 915-925
This study investigates capture zone uncertainty that relates to the coupled semivariogram uncertainty of hydrogeological and geophysical data. Semivariogram uncertainty is represented by the uncertainty in structural parameters (range, sill, and nugget). We used the beta distribution function to derive the prior distributions of structural parameters. The probability distributions of...
Vertical tectonic deformation associated with the San Andreas fault zone offshore of San Francisco, California
H. F. Ryan, T. Parsons, R. W. Sliter
2008, Tectonophysics (457) 209-223
A new fault map of the shelf offshore of San Francisco, California shows that faulting occurs as a distributed shear zone that involves many fault strands with the principal displacement taken up by the San Andreas fault and the eastern strand of the San Gregorio fault zone. Structures associated with...
Estimated home ranges can misrepresent habitat relationships on patchy landscapes
M.S. Mitchell, R. A. Powell
2008, Ecological Modelling (216) 409-414
Home ranges of animals are generally structured by the selective use of resource-bearing patches that comprise habitat. Based on this concept, home ranges of animals estimated from location data are commonly used to infer habitat relationships. Because home ranges estimated from animal locations are largely continuous in space, the resource-bearing...
Fluvial erosion and post-erosional processes on Titan
R. Jaumann, R. H. Brown, K. Stephan, J. W. Barnes, L.A. Soderblom, Christophe Sotin, S. Le Mouelic, R. N. Clark, J. Soderblom, B. J. Buratti, R. Wagner, T. B. McCord, S. Rodriguez, K. H. Baines, D. P. Cruikshank, P. D. Nicholson, C.A. Griffith, M. Langhans, R. D. Lorenz
2008, Icarus (197) 526-538
The surface of Titan has been revealed by Cassini observations in the infrared and radar wavelength ranges as well as locally by the Huygens lander instruments. Sand seas, recently discovered lakes, distinct landscapes and dendritic erosion patterns indicate dynamic surface processes. This study focus on erosional and depositional features that...
Nodal failure index approach to groundwater remediation design
J. Lee, H. W. Reeves, C.H. Dowding
2008, Journal of Geotechnical and Geoenvironmental Engineering (134) 1554-1557
Computer simulations often are used to design and to optimize groundwater remediation systems. We present a new computationally efficient approach that calculates the reliability of remedial design at every location in a model domain with a single simulation. The estimated reliability and other model information are used to select a...
Variability of community interaction networks in marine reserves and adjacent exploited areas
G. Montano-Moctezuma, H.W. Li, P.A. Rossignol
2008, Fisheries Research (94) 99-108
Regional and small-scale local oceanographic conditions can lead to high variability in community structure even among similar habitats. Communities with identical species composition can depict distinct networks due to different levels of disturbance as well as physical and biological processes. In this study we reconstruct community networks in four different...
Bioassay for estimating the biogenic methane-generating potential of coal samples
Elizabeth Jones, Mary A. Voytek, Peter D. Warwick, M.D. Corum, Alexander G. Cohn, Joseph E. Bunnell, Arthur C. Clark, William H. Orem
2008, International Journal of Coal Geology (76) 138-150
Generation of secondary biogenic methane in coal beds is likely controlled by a combination of factors such as the bioavailability of coal carbon, the presence of a microbial community to convert coal carbon to methane, and an environment supporting microbial growth and methanogenesis. A set...
Directivity in NGA earthquake ground motions: Analysis using isochrone theory
P. Spudich, B.S.J. Chiou
2008, Earthquake Spectra (24) 279-298
We present correction factors that may be applied to the ground motion prediction relations of Abrahamson and Silva, Boore and Atkinson, Campbell and Bozorgnia, and Chiou and Youngs (all in this volume) to model the azimuthally varying distribution of the GMRotI50 component of ground motion (commonly called 'directivity') around earthquakes....
