Spatial, seasonal, and source variability in the stable oxygen and hydrogen isotopic composition of tap waters throughout the USA
Jurate M. Landwehr, Tyler B. Coplen, David W. Stewart
2013, Hydrological Processes
To assess spatial, seasonal, and source variability in stable isotopic composition of human drinking waters throughout the entire USA, we have constructed a database of δ18O and δ2H of US tap waters. An additional purpose was to create a publicly available dataset useful for evaluating the forensic applicability of these...
Factors controlling floc settling velocity along a longitudinal estuarine transect
A.J. Manning, David H. Schoellhamer
Patrick L. Barnard, Bruce E. Jaffe, David H. Schoellhamer, editor(s)
2013, Marine Geology (345) 266-280
A 147 km longitudinal transect of flocculated cohesive sediment properties in San Francisco Bay (SFB) was conducted on June 17th, 2008. Our aim was to determine the factors that control floc settling velocity along the longitudinal axis of the estuary. The INSSEV-LF video system was used to measure floc diameters...
Groundwater ages and mixing in the Piceance Basin natural gas province, Colorado
Peter B. McMahon, Judith C. Thomas, Andrew G. Hunt
2013, Environmental Science & Technology (47) 13250-13257
Reliably identifying the effects of energy development on groundwater quality can be difficult because baseline assessments of water quality completed before the onset of energy development are rare and because interactions between hydrocarbon reservoirs and aquifers can be complex, involving both natural and human processes. Groundwater age and mixing data...
A landscape-based assessment of climate change vulnerability for all native Hawaiian plants
Lucas B. Fortini, Jonathan Price, James Jacobi, Adam Vorsino, Jeff Burgett, Kevin W. Brinck, Fred Amidon, Steve Miller, Sam `Ohukani`ohi`a Gon III, Gregory Koob, Eben H. Paxton
2013, Report, Hawaii Cooperative Studies Unit Technical Report
In Hawaiʽi and elsewhere, research efforts have focused on two main approaches to determine the potential impacts of climate change on individual species: estimating species vulnerabilities and projecting responses of species to expected changes. We integrated these approaches by defining vulnerability as the inability of species to exhibit any of...
Comparison of sediment supply to San Francisco Bay from watersheds draining the Bay Area and the Central Valley of California
L.J. McKee, M. Lewicki, David H. Schoellhamer, Neil K. Ganju
Patrick L. Barnard, Bruce E. Jaffe, David H. Schoellhamer, editor(s)
2013, Marine Geology (345) 47-62
Quantifying suspended sediment loads is important for managing the world's estuaries in the context of navigation, pollutant transport, wetland restoration, and coastal erosion. To address these needs, a comprehensive analysis was completed on sediment supply to San Francisco Bay from fluvial sources. Suspended sediment, optical backscatter, velocity data near the...
Dredging and contaminant exposure to tree swallows nesting on the upper Mississippi River
Thomas W. Custer, Paul M. Dummer, Christine M. Custer, David Warburton
2013, Environmental Monitoring and Assessment (185) 9043-9053
n 2008 and 2009, dredge material from the Mississippi River in Pool 8 south of Brownsville, Minnesota was used to construct nearby islands. Chemical analysis of sediment in 2001 and 2002 in the area to be dredged indicated detectable concentrations of organic and inorganic contaminants. Tree swallows (Tachycineta bicolor), whose...
Identifying the dynamic characteristics of a dual core-wall and frame building in Chile using aftershocks of the 27 February 2010 (Mw=8.8) Maule, Chile, earthquake
Mehmet Çelebi, Mark Sereci, Ruben Boroschek, Rodrigo Carreno, Patricio Bonelli
2013, Earthquake Spectra (29) 1233-1254
Following the 27 February 2010 (Mw = 8.8) Offshore Maule, Chile earthquake, a temporary, 16-channel, real-time data streaming array was installed in a recently constructed building in Viña del Mar to capture its responses to aftershocks. The cast-in-place, reinforced concrete building is 16 stories high, with 3 additional basement levels,...
Changes in surfzone morphodynamics driven by multi-decadal contraction of a large ebb-tidal delta
Jeff E. Hansen, Edwin Elias, Patrick L. Barnard
P.L. Barnard, B.E. Jaffe, D. H. Schoellhamer, editor(s)
2013, Marine Geology (345) 221-234
The impact of multi-decadal, large-scale deflation (76 million m3 of sediment loss) and contraction (~ 1 km) of a 150 km2 ebb-tidal delta on hydrodynamics and sediment transport at adjacent Ocean Beach in San Francisco, CA (USA), is examined using a coupled wave and circulation model. The model is forced...
Atmospheric deposition and critical loads for nitrogen and metals in Arctic Alaska: Review and current status
Greg L. Linder, William G. Brumbaugh, Peter Neitlich, Edward Little
2013, Open Journal of Air Pollution (2) 76-99
To protect important resources under their bureau’s purview, the United States National Park Service’s (NPS) Arctic Network (ARCN) has developed a series of “vital signs” that are to be periodically monitored. One of these vital signs focuses on wet and dry deposition of atmospheric chemicals and further, the establishment of...
Research on pathogens at Great Lakes beaches: sampling, influential factors, and potential sources
Water Resources Division, U.S. Geological Survey
2013, Fact Sheet 2013-3071
The overall mission of this work is to provide science-based information and methods that will allow beach managers to more accurately make beach closure and advisory decisions, understand the sources and physical processes affecting beach contaminants, and understand how science-based information can be used to mitigate and restore beaches and...
Tools for beach health data management, data processing, and predictive model implementation
Water Resources Division, U.S. Geological Survey
2013, Fact Sheet 2013-3068
This fact sheet describes utilities created for management of recreational waters to provide efficient data management, data aggregation, and predictive modeling as well as a prototype geographic information system (GIS)-based tool for data visualization and summary. All of these utilities were developed to assist beach managers in making decisions to...
Scientific results of the Second Gas Hydrate Drilling Expedition in the Ulleung Basin (UBGH2)
Byong-Jae Ryu, Timothy S. Collett, Michael Riedel, Gil-Young Kim, Jong-Hwa Chun, Jang-Jun Bahk, Joo Yong Lee, Ji-Hoon Kim, Dong-Geun Yoo
2013, Marine and Petroleum Geology (47) 1-20
As a part of Korean National Gas Hydrate Program, the Second Ulleung Basin Gas Hydrate Drilling Expedition (UBGH2) was conducted from 9 July to 30 September, 2010 in the Ulleung Basin, East Sea, offshore Korea using the D/V Fugro Synergy. The UBGH2 was performed to understand the distribution of gas...
Scale-dependent gas hydrate saturation estimates in sand reservoirs in the Ulleung Basin, East Sea of Korea
Myung Woong Lee, Timothy S. Collett
2013, Marine and Petroleum Geology (47) 195-203
Through the use of 2-D and 3-D seismic data, several gas hydrate prospects were identified in the Ulleung Basin, East Sea of Korea and thirteen drill sites were established and logging-while-drilling (LWD) data were acquired from each site in 2010. Sites UBGH2–6 and UBGH2–10 were selected to test a series...
Microbial source tracking as a tool for TMDL development, Little Blue River in Independence, Missouri
Eric D. Christensen, Rebecca N. Bushon, Amie M. G. Brady
2013, Book, Proceedings of the Water Environment Federation
The Little Blue River in Jackson County, Missouri has been listed by the Missouri Department of Natural Resources as impaired by bacteria for the protection of aquatic life and contact recreation from urban point and nonpoint sources. The Clean Water Act requires that a total maximum daily load (TMDL) for...
The use of modeling and suspended sediment concentration measurements for quantifying net suspended sediment transport through a large tidally dominated inlet
Li H. Erikson, Scott Wright, Edwin Elias, Daniel M. Hanes, David H. Schoellhamer, John Largier
Patrick L. Barnard, Bruce E. Jaffe, David H. Schoellhamer, editor(s)
2013, Marine Geology (345) 96-112
Sediment exchange at large energetic inlets is often difficult to quantify due complex flows, massive amounts of water and sediment exchange, and environmental conditions limiting long-term data collection. In an effort to better quantify such exchange this study investigated the use of suspended sediment concentrations (SSC) measured at an offsite...
Large-scale depositional characteristics of the Ulleung Basin and its impact on electrical resistivity and Archie-parameters for gas hydrate saturation estimates
Michael Riedel, Timothy S. Collett, H.-S. Kim, J.-J. Bahk, J.-H. Kim, B.-J. Ryu, G.-Y. Kim
2013, Marine and Petroleum Geology (47) 222-235
Gas hydrate saturation estimates were obtained from an Archie-analysis of the Logging-While-Drilling (LWD) electrical resistivity logs under consideration of the regional geological framework of sediment deposition in the Ulleung Basin, East Sea, of Korea. Porosity was determined from the LWD bulk density log and core-derived values of grain density. In...
Characterization of gas hydrate reservoirs by integration of core and log data in the Ulleung Basin, East Sea
J.-J. Bahk, G.-Y. Kim, J.-H. Chun, J.-H. Kim, J.Y. Lee, B.-J. Ryu, J.-H. Lee, B.-K. Son, Timothy S. Collett
2013, Marine and Petroleum Geology (47) 30-42
Examinations of core and well-log data from the Second Ulleung Basin Gas Hydrate Drilling Expedition (UBGH2) drill sites suggest that Sites UBGH2-2_2 and UBGH2-6 have relatively good gas hydrate reservoir quality in terms of individual and total cumulative thicknesses of gas-hydrate-bearing sand (HYBS) beds. In both of the sites, core...
Characteristics and interpretation of fracture-filled gas hydrate: an example from the Ulleung Basin, East Sea of Korea
Myung Woong Lee, Timothy S. Collett
2013, Marine and Petroleum Geology (47) 168-181
Through the use of 2-D and 3-D seismic data, a total of thirteen sites were selected and drilled in the East Sea of Korea in 2010. A suite of logging-while-drilling (LWD) logs was acquired at each site. LWD logs from the UBGH2-3A well indicate significant gas hydrate in clay-bearing sediments...
Measuring suspended sediment
J. R. Gray, M. N. Landers
2013, Book chapter, Comprehensive water quality and purification
Suspended sediment in streams and rivers can be measured using traditional instruments and techniques and (or) surrogate technologies. The former, as described herein, consists primarily of both manually deployed isokinetic samplers and their deployment protocols developed by the Federal Interagency Sedimentation Project. They are used on all continents other than...
The North American Breeding Bird Survey 1966–2011: Summary analysis and species accounts
John R. Sauer, William A. Link, Jane E. Fallon, Keith L. Pardieck, David J. Ziolkowski
2013, North American Fauna (79) 1-32
The North American Breeding Bird Survey is a roadside, count-based survey conducted by volunteer observers. Begun in 1966, it now is a primary source of information on spatial and temporal patterns of population change for North American birds. We analyze population change for states, provinces, Bird Conservation Regions, and the...
A hierarchical nest survival model integrating incomplete temporally varying covariates
Sarah J. Converse, J. Andrew Royle, Peter H. Adler, Richard P. Urbanek, Jeb A. Barzan
2013, Ecology and Evolution (3) 4439-4447
Nest success is a critical determinant of the dynamics of avian populations, and nest survival modeling has played a key role in advancing avian ecology and management. Beginning with the development of daily nest survival models, and proceeding through subsequent extensions, the capacity for modeling the effects of hypothesized factors...
Simulated tsunami inundation for a range of Cascadia megathrust earthquake scenarios at Bandon, Oregon, USA
Robert C. Witter, Yinglong J. Zhang, Kelin Wang, George R. Priest, Chris Goldfinger, Laura Stimely, John T. English, Paul A. Ferro
2013, Geosphere (9) 1783-1803
Characterizations of tsunami hazards along the Cascadia subduction zone hinge on uncertainties in megathrust rupture models used for simulating tsunami inundation. To explore these uncertainties, we constructed 15 megathrust earthquake scenarios using rupture models that supply the initial conditions for tsunami simulations at Bandon, Oregon. Tsunami inundation varies with the...
Woody debris volume depletion through decay: implications for biomass and carbon accounting
Shawn Fraver, Amy M. Milo, John B. Bradford, Anthony W. D’Amato, Laura Kenefic, Brian J. Palik, Christopher W. Woodall, John Brissette
2013, Ecosystems (16) 1262-1272
Woody debris decay rates have recently received much attention because of the need to quantify temporal changes in forest carbon stocks. Published decay rates, available for many species, are commonly used to characterize deadwood biomass and carbon depletion. However, decay rates are often derived from reductions in wood density through...
Spatial contexts for temporal variability in alpine vegetation under ongoing climate change
George P. Malanson, Daniel B. Fagre
2013, Plant Ecology (214) 1309-1319
A framework to monitor mountain summit vegetation (The Global Observation Research Initiative in Alpine Environments, GLORIA) was initiated in 1997. GLORIA results should be taken within a regional context of the spatial variability of alpine tundra. Changes observed at GLORIA sites in Glacier National Park, Montana, USA are quantified within...
A sediment budget for the southern reach in San Francisco Bay, CA: Implications for habitat restoration
Gregory Shellenbarger, Scott Wright, David H. Schoellhamer
2013, Marine Geology (345) 281-293
The South Bay Salt Pond Restoration Project is overseeing the restoration of about 6000 ha of former commercial salt-evaporation ponds to tidal marsh and managed wetlands in the southern reach of San Francisco Bay (SFB). As a result of regional groundwater overdrafts prior to the 1970s, parts of the project...
