Probabilistic seismic hazard estimates incorporating site effects - An example from Indiana, U.S.A
J.S. Hasse, C.H. Park, R.L. Nowack, J.R. Hill
2010, Environmental & Engineering Geoscience (16) 369-388
The U.S. Geological Survey (USGS) has published probabilistic earthquake hazard maps for the United States based on current knowledge of past earthquake activity and geological constraints on earthquake potential. These maps for the central and eastern United States assume standard site conditions with Swave velocities of 760 m/s in the...
Variable-period surface-wave magnitudes: A rapid and robust estimator of seismic moments
J. Bonner, R. Herrmann, H. Benz
2010, Bulletin of the Seismological Society of America (100) 2301-2309
We demonstrate that surface-wave magnitudes (Ms), measured at local, regional, and teleseismic distances, can be used as a rapid and robust estimator of seismic moment magnitude (Mw). We used the Russell (2006) variable-period surface-wave magnitude formula, henceforth called Ms(VMAX), to estimate the Ms for 165 North American events with 3.2...
Historical arroyo formation: documentation of magnitude and timing of historical changes using repeat photography
Robert H. Webb, Richard Hereford
Robert H. Webb, Diane E. Boyer, Raymond M. Turner, editor(s)
2010, Book chapter, Repeat photography: methods and applications in the natural sciences
Erratum to Observation and prediction of dynamic ground strains, tilts, and torsions caused by the Mw 6.0 2004 Parkfield, California, earthquake and aftershocks, derived from upsar array observations
P. Spudich, Joe B. Fletcher
2010, Bulletin of the Seismological Society of America (100) 2348-2352
[No abstract available]...
Ecoregions and stream morphology in eastern Oklahoma
D. K. Splinter, D.C. Dauwalter, R. A. Marston, W.L. Fisher
2010, Geomorphology (122) 117-128
Broad-scale variables (i.e., geology, topography, climate, land use, vegetation, and soils) influence channel morphology. How and to what extent the longitudinal pattern of channel morphology is influenced by broad-scale variables is important to fluvial geomorphologists and stream ecologists. In the last couple of decades, there has been an increase in...
Correlation of aptian-albian carbon isotope excursions in continental strata of the cretaceous Foreland Basin, Eastern Utah, U.S.A.
Greg A. Ludvigson, R. M. Joeckel, Luis A. Gonzalez, E.L. Gulbranson, E.T. Rasbury, G.J. Hunt, J.I. Kirkland, S. Madsen
2010, Journal of Sedimentary Research (80) 955-974
Nodular carbonates ("calcretes") in continental foreland-basin strata of the Early Cretaceous Cedar Mountain Formation (CMF) in eastern Utah yield ??13C and ??O records of changes in the exogenic carbon cycle related to oceanic anoxic events (OAEs), and terrestrial paleoclimate. Chemostratigraphic profiles of both forebulge and foredeep sections show two prominent...
Predicting species distributions from checklist data using site-occupancy models
M. Kery, B. Gardner, C. Monnerat
2010, Journal of Biogeography (37) 1851-1862
Aim: (1) To increase awareness of the challenges induced by imperfect detection, which is a fundamental issue in species distribution modelling; (2) to emphasize the value of replicate observations for species distribution modelling; and (3) to show how 'cheap' checklist data in faunal/floral databases may be used for the rigorous...
Shell anomalies observed in a population of Archaias angulatus (Foraminifera) from the Florida Keys (USA) sampled in 1982-83 and 2006-07
H.C. Souder, B. McCloskey, P. Hallock, R. Byrne
2010, Marine Micropaleontology (77) 71-81
Archived specimens of Archaias angulatus collected live at a depth of < 2. m in John Pennekamp Coral Reef State Park, Key Largo, Florida, in June, September and December 1982, and March 1983, were compared to specimens collected live from the same site and months in 2006-07. Shells were examined...
Debris flows resulting from glacial-lake outburst floods in tibet, China
P. Cui, C. Dang, Z. Cheng, K. Scott
2010, Physical Geography (31) 508-527
During the last 70 years of general climatic amelioration, 18 glacial-lake outburst floods (GLOFs) and related debris flows have occurred from 15 moraine-dammed lakes in Tibet, China. Catastrophic loss of life and property has occurred because of the following factors: the large volumes of water discharged, the steep gradients of...
A 15 000-year record of climate change in northern New Mexico, USA, inferred from isotopic and elemental contents of bog sediments
L. M. Cisneros-Dozal, J.M. Heikoop, J. Fessenden, R. Scott Anderson, P.A. Meyers, Craig D. Allen, M. Hess, T. Larson, G. Perkins, M. Rearick
2010, Journal of Quaternary Science (25) 1001-1007
Elemental (C, N, Pb) and isotopic (δ13C, δ15N) measurements of cored sediment from a small bog in northern New Mexico reveal changes in climate during the Late Pleistocene and Holocene. Abrupt increases in Pb concentration and δ13C values ca. 14 420 cal. YBP indicate significant runoff to the shallow lake that...
Potential environmental influences on variation in body size and sexual size dimorphism among Arizona populations of the western diamond-backed rattlesnake (Crotalus atrox)
Melissa Amarello, Erica M. Nowak, Emily N. Taylor, Gordon W. Schuett, Roger A. Repp, Philip C. Rosen, David L. Hardy Sr.
2010, Journal of Arid Environments (74) 1443-1449
Differences in resource availability and quality along environmental gradients are important influences contributing to intraspecific variation in body size, which influences numerous life-history traits. Here, we examined variation in body size and sexual size dimorphism (SSD) in relation to temperature, seasonality, and precipitation among 10 populations located throughout Arizona of...
Comment on "analysis of pumping test data for determining unconfined-aquifer parameters: Composite analysis or not?": Paper published in Hydrogeology Journal (2009) 17:1133-1147, by Hund-Der Yeh and Yen-Chen Huang
Allen F. Moench
2010, Hydrogeology Journal (18) 1975-1977
No abstract available....
Detrital zircon analysis of Mesoproterozoic and neoproterozoic metasedimentary rocks of northcentral idaho: Implications for development of the Belt-Purcell basin
R. S. Lewis, J.D. Vervoort, R. F. Burmester, P.J. Oswald
2010, Canadian Journal of Earth Sciences (47) 1383-1404
The authors analyzed detrital zircon grains from 10 metasedimentary rock samples of the Priest River complex and three other amphibolite-facies metamorphic sequences in north-central Idaho to test the previous assignment of these rocks to the Mesoproterozoic Belt-Purcell Supergroup. Zircon grains from two samples of the Prichard Formation (lower Belt) and...
Effect of imperfect detectability on adaptive and conventional sampling: Simulated sampling of freshwater mussels in the upper Mississippi River
D. R. Smith, B. R. Gray, T.J. Newton, D. Nichols
2010, Environmental Monitoring and Assessment (170) 499-507
Adaptive sampling designs are recommended where, as is typical with freshwater mussels, the outcome of interest is rare and clustered. However, the performance of adaptive designs has not been investigated when outcomes are not only rare and clustered but also imperfectly detected. We address this combination of challenges using data...
Depositional setting, petrology and chemistry of Permian coals from the Paraná Basin: 2. South Santa Catarina Coalfield, Brazil
W. Kalkreuth, M. Holz, A. Mexias, M. Balbinot, J. Levandowski, J. Willett, R. Finkelman, H. Burger
2010, International Journal of Coal Geology (84) 213-236
In Brazil economically important coal deposits occur in the southern part of the Paraná Basin, where coal seams occur in the <a title="Learn more about Permian from ScienceDirect's AI-generated Topic...
Influence of sea level rise on iron diagenesis in an east Florida subterranean estuary
M. Roy, J.B. Martin, J. Cherrier, J.E. Cable, Christopher G. Smith
2010, Geochimica et Cosmochimica Acta (74) 5560-5573
Subterranean estuary occupies the transition zone between hypoxic fresh groundwater and oxic seawater, and between terrestrial and marine sediment deposits. Consequently, we hypothesize, in a subterranean estuary, biogeochemical reactions of Fe respond to submarine groundwater discharge (SGD) and sea level rise. Porewater and sediment samples...
A trade-off solution between model resolution and covariance in surface-wave inversion
J. Xia, Y. Xu, R. D. Miller, C. Zeng
2010, Pure and Applied Geophysics (167) 1537-1547
Regularization is necessary for inversion of ill-posed geophysical problems. Appraisal of inverse models is essential for meaningful interpretation of these models. Because uncertainties are associated with regularization parameters, extra conditions are usually required to determine proper parameters for assessing inverse models. Commonly used techniques for assessment of a geophysical inverse...
High tsunami frequency as a result of combined strike-slip faulting and coastal landslides
M.J. Hornbach, N. Braudy, R.W. Briggs, M.-H. Cormier, M.B. Davis, J.B. Diebold, N. Dieudonne, R. Douilly, C. Frohlich, S.P.S. Gulick, H. E. Johnson III, P. Mann, C. McHugh, K. Ryan-Mishkin, C.S. Prentice, L. Seeber, C.C. Sorlien, M.S. Steckler, S.J. Symithe, F. W. Taylor, J. Templeton
2010, Nature Geoscience (3) 783-788
Earthquakes on strike-slip faults can produce devastating natural hazards. However, because they consist predominantly of lateral motion, these faults are rarely associated with significant uplift or tsunami generation. And although submarine slides can generate tsunami, only a few per cent of all tsunami are believed to be triggered in this...
High resolution near-bed observations in winter near Cape Hatteras, North Carolina
Marinna A. Martini, Brandy N. Armstrong, John C. Warner
2010, Conference Paper, OCEANS 2009, MTS/IEEE Biloxi - Marine Technology for Our Future: Global and Local Challenges
The U.S. Geological Survey (USGS) Coastal and Marine Science Center in Woods Hole, Massachusetts, is leading an effort to understand the regional sediment dynamics along the coastline of North and South Carolina. As part of the Carolinas Coastal Change Processes Project, a geologic framework study in June of 2008 by...
Geochemical and mineralogical evidence for Sahara and Sahel dust additions to Quaternary soils on Lanzarote, eastern Canary Islands, Spain
D.R. Muhs, J. Budahn, G. Skipp, J.M. Prospero, D. Patterson, E. Arthur Bettis III
2010, Terra Nova (22) 399-410
Africa is the most important source of dust in the world today, and dust storms are frequent on the nearby Canary Islands. Previous workers have inferred that the Sahara is the most important source of dust to Canary Islands soils, with little contribution from the Sahel region. Soils overlying a...
Locating non-volcanic tremor along the San Andreas Fault using a multiple array source imaging technique
T. Ryberg, C.H. Haberland, G. S. Fuis, W.L. Ellsworth, D.R. Shelly
2010, Geophysical Journal International (183) 1485-1500
Non-volcanic tremor (NVT) has been observed at several subduction zones and at the San Andreas Fault (SAF). Tremor locations are commonly derived by cross-correlating envelope-transformed seismic traces in combination with source-scanning techniques. Recently, they have also been located by using relative relocations with master events, that is low-frequency earthquakes that...
Patterns of ancestry and genetic diversity in reintroduced populations of the slimy sculpin: Implications for conservation
D.D. Huff, L.M. Miller, B. Vondracek
2010, Conservation Genetics (11) 2379-2391
Reintroductions are a common approach for preserving intraspecific biodiversity in fragmented landscapes. However, they may exacerbate the reduction in genetic diversity initially caused by population fragmentation because the effective population size of reintroduced populations is often smaller and reintroduced populations also tend to be more geographically isolated than native populations....
Holocene aggradation of the Dry Tortugas coral reef ecosystem
J. C. Brock, M. Palaseanu-Lovejoy, R.Z. Poore, A. Nayegandhi, C. W. Wright
2010, Coral Reefs (29) 857-868
Radiometric age dating of reef cores acquired at the Dry Tortugas coral reef ecosystem (DTCRE) was merged with lidar topographic mapping to examine Holocene reef development linked to spatial variation in growth and erosion under the control of sea level. Analysis of variance of lidar topography confirmed the presence of...
An evaluation of the influence of substrate on the response of juvenile freshwater mussels (fatmucket, Lampsilis siliquoidea) in acute water exposures to ammonia
J. Miao, M.C. Barnhart, Eric L. Brunson, Douglas K. Hardesty, Christopher G. Ingersoll, Ning Wang
2010, Environmental Toxicology and Chemistry (29) 2112-2116
Acute 96-h ammonia toxicity to three-month-old juvenile mussels (Lampsilis siliquoidea) was evaluated in four treatments (water-only, water-only with feeding, water and soil, and water and sand) using an exposure unit designed to maintain consistent pH and ammonia concentrations in overlying water and in pore water surrounding the substrates. Median effect...
Determining sources of dissolved organic carbon and disinfection byproduct precursors to the McKenzie River, Oregon
Tamara E.C. Kraus, Chauncey W. Anderson, Karl Morgenstern, Bryan D. Downing, Brian A. Pellerin, Brian A. Bergamaschi
2010, Journal of Environmental Quality (39) 2100-2112
This study was conducted to determine the main sources of dissolved organic carbon (DOC) and disinfection byproduct (DBP) precursors to the McKenzie River, Oregon (USA). Water samples collected from the mainstem, tributaries, and reservoir outflows were analyzed for DOC concentration and DBP formation potentials (trihalomethanes [THMFPs] and haloacetic acids [HAAFPs])....
