Directional bottom roughness associated with waves, currents, and ripples
Christopher R. Sherwood
Julie D. Rosati, Ping Wang, Tiffany M. Roberts, editor(s)
2011, Conference Paper, The proceedings of the Coastal Sediments 2011
Roughness lengths are used in wave-current bottom boundary layer models to parameterize drag associated with grain roughness, the effect of saltating grains during sediment transport, and small-scale bottom topography (ripples and biogenic features). We made field measurements of flow parameters and recorded sonar images of ripples at the boundary of...
A nearshore processes field experiment at Cape Hatteras, North Carolina, U.S.A.
Jeffrey H. List, John C. Warner, E. Robert Thieler, Kevin Haas, George Voulgaris, Jesse E. McNinch, Katherine L. Brodie
Julie D. Rosati, Ping Wang, Tiffany M. Roberts, editor(s)
2011, Conference Paper, The proceedings of the Coastal Sediments 2011
A month-long field experiment focused on the nearshore hydrodynamics of Diamond Shoals adjacent to Cape Hatteras Point, North Carolina, was conducted in February 2010. The objectives of this multi-institutional experiment were to test hypotheses related to Diamond Shoals as a sink in the regional sediment budget and to provide data...
The development of a probabilistic approach to forecast coastal change
Erika E. Lentz, Cheryl J. Hapke
Julie D. Rosati, Ping Wang, Tiffany M. Roberts, editor(s)
2011, Conference Paper, The proceedings of the Coastal Sediments 2011
This study demonstrates the applicability of a Bayesian probabilistic model as an effective tool in predicting post-storm beach changes along sandy coastlines. Volume change and net shoreline movement are modeled for two study sites at Fire Island, New York in response to two extratropical storms in 2007 and 2009. Both...
Cold-water coral distributions in the Drake Passage area from towed camera observations - Initial interpretations
Rhian G. Waller, Kathryn Scanlon Catanach, Laura F. Robinson
2011, PLoS ONE (6)
Seamounts are unique deep-sea features that create habitats thought to have high levels of endemic fauna, productive fisheries and benthic communities vulnerable to anthropogenic impacts. Many seamounts are isolated features, occurring in the high seas, where access is limited and thus biological data scarce. There are numerous seamounts within the...
Parallelization of GeoClaw code for modeling geophysical flows with adaptive mesh refinement on many-core systems
S. Zhang, D.A. Yuen, A. Zhu, S. Song, David L. George
2011, Conference Paper, 14th IEEE Int. Conf. on Computational Science and Engineering, CSE 2011 and 11th Int. Symp. on Pervasive Systems, Algorithms, and Networks, I-SPA 2011 and 10th IEEE Int. Conf. on IUCC 2011
We parallelized the GeoClaw code on one-level grid using OpenMP in March, 2011 to meet the urgent need of simulating tsunami waves at near-shore from Tohoku 2011 and achieved over 75% of the potential speed-up on an eight core Dell Precision T7500 workstation [1]. After submitting that work to SC11...
Evaluation of sewage source and fate on southeast Florida coastal reefs
Futch J. Carrie, Dale W. Griffin, K. Banks, E.K. Lipp
2011, Marine Pollution Bulletin (62) 2308-2316
Water, sponge and coral samples were collected from stations impacted by a variety of pollution sources and screened for human enteric viruses as conservative markers for human sewage. While human enteroviruses and adenoviruses were not detected, noroviruses (NoV; human genogroups I and II) were detected in 31% of samples (especially...
Simulating sterilization, vaccination, and test-and-remove as brucellosis control measures in bison
M. Ebinger, Paul C. Cross, Rick Wallen, P.J. White, John Treanor
2011, Ecological Applications (21) 2944-2959
Brucella abortus, the causative agent of bovine brucellosis, infects wildlife, cattle, and humans worldwide, but management of the disease is often hindered by the logistics of controlling its prevalence in wildlife reservoirs. We used an individually based epidemiological model to assess the relative efficacies of three management interventions (sterilization, vaccination,...
From agricultural intensification to conservation: Sediment transport in the Raccoon River, Iowa, 1916-2009
C.S. Jones, K. E. Schilling
2011, Journal of Environmental Quality (40) 1911-1923
Fluvial sediment is a ubiquitous pollutant that negatively aff ects surface water quality and municipal water supply treatment. As part of its routine water supply monitoring, the Des Moines Water Works (DMWW) has been measuring turbidity daily in the Raccoon River since 1916. For this study, we calibrated daily turbidity...
Chapter 6: Detectability adjusted count models of songbird abundance
Cameron L. Aldridge, Steve E. Hanser, Scott E. Nielsen, Matthias Leu, Brian S. Cade, D. Joanne Saher, Steven T. Knick
2011, Book chapter, Sagebrush ecosystem conservation and management: Ecoregional assessment tools and models for the Wyoming Basins
Sagebrush (Artemisia spp.) steppe ecosystems have experienced recent changes resulting not only in the loss of habitat but also fragmentation and degradation of remaining habitats. As a result, sagebrush-obligate and sagebrush associated songbird populations have experienced population declines over the past several decades. We examined landscape-scale responses in occupancy and...
The Sculptured Hills of the Taurus Highlands: Implications for the relative age of Serenitatis, basin chronologies and the cratering history of the Moon
P. D. Spudis, D.E. Wilhelms, M.S. Robinson
2011, Journal of Geophysical Research E: Planets (116)
New images from the Lunar Reconnaissance Orbiter Camera show the distribution and geological relations of the Sculptured Hills, a geological unit widespread in the highlands between the Serenitatis and Crisium basins. The Sculptured Hills shows knobby, undulating, radially textured, and plains-like morphologies and in many places is indistinguishable from the...
Historical perspective on seismic hazard to Hispaniola and the northeast Caribbean region
Uri S. ten Brink, W. H. Bakun, C.H. Flores
2011, Journal of Geophysical Research B: Solid Earth (116)
We evaluate the long-term seismic activity of the North-American/Caribbean plate boundary from 500 years of historical earthquake damage reports. The 2010 Haiti earthquakes and other earthquakes were used to derive regional attenuation relationships between earthquake intensity, magnitude, and distance from the reported damage to the epicenter, for Hispaniola and for...
Hydrothermal hexahydrite spherules erupted during the 2008-2010 summit eruption of Kīlauea Volcano, Hawai`i'
Ken Hon, Tim R. Orr
2011, Bulletin of Volcanology (73) 1369-1375
Small (1-3 mm), hollow spherules of hexahydrite have been collected falling out of the magmatic gas plume downwind of Kīlauea’s summit vent. The spherules were observed on eight separate occasions during 2009-2010 when a lake of actively spattering lava was present ~150-200 m below the rim of the vent. The...
Soil and periphyton indicators of anthropogenic water-quality changes in a rainfall-driven wetland
P.V. McCormick
2011, Wetlands Ecology and Management (19) 19-34
Surface soils and periphyton communities were sampled across an oligotrophic, soft-water wetland to document changes associated with pulsed inputs of nutrient- and mineral-rich canal drainage waters. A gradient of canal-water influence was indicated by the surface-water specific conductance, which ranged between 743 and 963 μS cm−1 in the canals to as low as...
Bounce Rock-A shergottite-like basalt encountered at Meridiani Planum, Mars
J. Zipfel, C. Schroder, B.L. Jolliff, Ralf Gellert, K. E. Herkenhoff, R. Rieder, R. Anderson, J.F. Bell III, J. Bruckner, J.A. Crisp, P. R. Christensen, B. C. Clark, P.A. de Souza, G. Dreibus, C. D'uston, T. Economou, S.P. Gorevan, B.C. Hahn, G. Klingelhofer, T.J. McCoy, H.Y. McSween, D. W. Ming, R.V. Morris, D.S. Rodionov, S. W. Squyres, H. Wanke, S.P. Wright, M.B. Wyatt, A. S. Yen
2011, Meteoritics and Planetary Science (46) 1-20
The Opportunity rover of the Mars Exploration Rover mission encountered an isolated rock fragment with textural, mineralogical, and chemical properties similar to basaltic shergottites. This finding was confirmed by all rover instruments, and a comprehensive study of these results is reported here. Spectra from the miniature thermal emission spectrometer and...
Effects of planting method and seed mix richness on the early stages of tallgrass prairie restoration
D.L. Larson, J.B. Bright, P. Drobney, J.L. Larson, N. Palaia, P.A. Rabie, S. Vacek, D. Wells
2011, Biological Conservation (144) 3127-3139
Tallgrass prairie restoration has been practiced for more than 75. years, yet few studies have systematically tested restoration methods over large geographic regions with the intent of refining methodology. In this study, we used three planting methods (dormant-season broadcast, growing-season broadcast and growing-season drill) fully crossed with three levels of...
Sarcocystis neurona retinochoroiditis in a sea otter (Enhydra lutris kenyoni)
J. P. Dubey, N. J. Thomas
2011, Veterinary Parasitology (183) 156-159
Sarcocystis neurona is an important cause of fatal disease in sea otters in the USA. Encephalitis is the predominant lesion and parasites are confined to the central nervous system and muscles. Here we report retinochoroiditis in a sea otter (Enhydra lutris kenyoni) found dead on Copalis Beach, WA, USA. Salient...
Simulating the potential effects of climate change in two Colorado basins and at two Colorado ski areas
William Battaglin, Lauren E. Hay, Steve Markstrom
2011, Earth Interactions (15) 1-23
The mountainous areas of Colorado are used for tourism and recreation, and they provide water storage and supply for municipalities, industries, and agriculture. Recent studies suggest that water supply and tourist industries such as skiing are at risk from climate change. In this study, a distributed-parameter watershed model, the Precipitation-Runoff...
Residence time and movements of postbreeding shorebirds on the northern coast of Alaska
Audrey R. Taylor, Richard B. Lanctot, Abby N. Powell, Steven J. Kendall, Debora A. Nigro
2011, The Condor (113) 779-794
Relatively little is known about shorebird movements across the coast of northern Alaska, yet postbreeding shorebirds use this coastline extensively prior to fall migration. We deployed 346 radio transmitters on 153 breeding and 193 postbreeding shorebirds of five species from 2005 to 2007.We examined two hypotheses regarding postbreeding shorebirds' movements:...
Geology and mammalian paleontology of the Horned Toad Hills, Mojave Desert, California, USA
S.R. May, M.O. Woodburne, E.H. Lindsay, L.B. Albright, A. Sarna-Wojcicki, E. Wan, D.B. Wahl
2011, Palaeontologia Electronica (14) 13
The Horned Toad Formation includes five lithostratigraphic members that record alluvial fan, fluvial, lake margin, and lacustrine deposition within a relatively small basin just south of the active Garlock fault during the late Miocene to early Pliocene. These sediments experienced northwest-southeast contractional deformation during the Pliocene-Pleistocene associated with basement-involved reverse...
Developing user-friendly habitat suitability tools from regional stream fish survey data
T.G. Zorn, P. Seelbach, M.J. Wiley
2011, North American Journal of Fisheries Management (31) 41-55
We developed user-friendly fish habitat suitability tools (plots) for fishery managers in Michigan; these tools are based on driving habitat variables and fish population estimates for several hundred stream sites throughout the state. We generated contour plots to show patterns in fish biomass for over 60 common species (and for...
Geochemical heterogeneity in a small, stratigraphically complex moraine aquifer system (Ontario, Canada): Interpretation of flow and recharge using multiple geochemical parameters
R.L. Stotler, S.K. Frape, H.T. El Mugammar, C. Johnston, I. Judd-Henrey, F.E. Harvey, R. Drimmie, J.P. Jones
2011, Hydrogeology Journal (19) 101-115
The Waterloo Moraine is a stratigraphically complex system and is the major water supply to the cities of Kitchener and Waterloo in Ontario, Canada. Despite over 30 years of investigation, no attempt has been made to unify existing geochemical data into a single database. A composite view of the moraine geochemistry...
An inexpensive instrument for measuring wave exposure and water velocity
J.D. Figurski, D. Malone, J.R. Lacy, M. Denny
2011, Limnology and Oceanography: Methods (9) 204-214
Ocean waves drive a wide variety of nearshore physical processes, structuring entire ecosystems through their direct and indirect effects on the settlement, behavior, and survivorship of marine organisms. However, wave exposure remains difficult and expensive to measure. Here, we report on an inexpensive and easily constructed instrument for measuring wave-induced...
Beach monitoring criteria: reading the fine print
Meredith B. Nevers, Richard L. Whitman
2011, Environmental Science & Technology (45) 10315-10321
Beach monitoring programs aim to decrease swimming-related illnesses resulting from exposure to harmful microbes in recreational waters, while providing maximum beach access. Managers are advised by the U.S. EPA to estimate microbiological water quality based on a 5-day geometric mean of fecal indicator bacteria (FIB) concentrations or on a jurisdiction-specific...
Identification and evaluation of shark bycatch in Georgia's commercial shrimp trawl fishery with implications for management
C.N. Belcher, Cecil A. Jennings
2011, Fisheries Management and Ecology (18) 104-112
Many US states have recreational and commercial fisheries that occur in nursery areas occupied by subadult sharks and can potentially affect their survival. Georgia is one of few US states without a directed commercial shark fishery, but the state has a large, nearshore penaeid shrimp trawl fishery in which small...
Hierarchical spatial capture-recapture models for estimating density from trapping arrays
J. Andrew Royle, B. Gardner
Allan F. O’Connell, James D. Nichols, K. Ullas Karanth, editor(s)
2011, Book chapter, Camera traps in animal ecology: Methods and analyses
No abstract available....
