Using geochemistry to identify the source of groundwater to Montezuma Well, a natural spring in Central Arizona, USA: Part 2
Raymond H. Johnson, Ed DeWitt, Laurie Wirt, Andrew H. Manning, Andrew G. Hunt
2012, Environmental Earth Sciences (67) 1837-1853
Montezuma Well is a unique natural spring located in a sinkhole surrounded by travertine. Montezuma Well is managed by the National Park Service, and groundwater development in the area is a potential threat to the water source for Montezuma Well. This research was undertaken to better understand the sources of...
Eruptive history of Mount Katmai, Alaska
Edward Hildreth, Judith Fierstein
2012, Geosphere (8) 1527-1567
Mount Katmai has long been recognized for its caldera collapse during the great pyroclastic eruption of 1912 (which vented 10 km away at Novarupta in the Valley of Ten Thousand Smokes), but little has previously been reported about the geology of the remote ice-clad stratovolcano itself. Over several seasons,...
Difference infiltrometer: a method to measure temporally variable infiltration rates during rainstorms
John A. Moody, Brian A. Ebel
2012, Hydrological Processes (26) 3312-3318
We developed a difference infiltrometer to measure time series of non-steady infiltration rates during rainstorms at the point scale. The infiltrometer uses two, tipping bucket rain gages. One gage measures rainfall onto, and the other measures runoff from, a small circular plot about 0.5-m in diameter. The small size allows...
The effect of nonylphenol on gene expression in Atlantic salmon smolts
Laura S. Robertson, Stephen D. McCormick
2012, Aquatic Toxicology (122-123) 36-43
The parr–smolt transformation in Atlantic salmon (Salmo salar) is a complex developmental process that culminates in the ability to migrate to and live in seawater. Exposure to environmental contaminants like nonylphenol can disrupt smolt development and may be a contributing factor in salmon population declines. We used GRASP 16K cDNA...
Uncertainty quantification for environmental models
Mary C. Hill, Dan Lu, Dmitri Kavetski, Martyn P. Clark, Ming Ye
2012, SIAM News (45)
Environmental models are used to evaluate the fate of fertilizers in agricultural settings (including soil denitrification), the degradation of hydrocarbons at spill sites, and water supply for people and ecosystems in small to large basins and cities—to mention but a few applications of these models. They also play a role...
Morphological and chemical evidence of stromatolitic deposits in the 2.75 Ga Carajás banded iron formation, Brazil
Beatriz Ribeiro da Luz, James K. Crowley
2012, Earth and Planetary Science Letters (355-356) 60-72
We describe evidence of biogenicity in the morphology and carbon content of well-preserved, Neoarchean samples of banded iron formation (BIF) from Carajás, Brazil. Silica-rich BIF layers contain translucent ellipsoidal or trapezoidal structures (∼5–10 μm diameter) composed of silica, hematite, and kerogen, which are arranged in larger ring-like forms (rosettes). Stable...
Externally triggered renewed bubble nucleation in basaltic magma: the 12 October 2008 eruption at Halema‘uma‘u Overlook vent, Kīlauea, Hawai‘i, USA
Rebecca J. Carey, Michael Manga, Wim Degruyter, Donald Swanson, Bruce F. Houghton, Tim R. Orr, Matthew R. Patrick
2012, Journal of Geophysical Research B: Solid Earth (117)
From October 2008 until present, dozens of small impulsive explosive eruptions occurred from the Overlook vent on the southeast side of Halema‘uma‘u Crater, at Kīlauea volcano, USA. These eruptions were triggered by rockfalls from the walls of the volcanic vent and conduit onto the top of the lava column. Here...
Atmospheric inputs to watersheds of the Luquillo Mountains in eastern Puerto Rico: Chapter D in Water quality and landscape processes of four watersheds in eastern Puerto Rico
Robert F. Stallard
Sheila F. Murphy, Robert F. Stallard, editor(s)
2012, Professional Paper 1789-D
Twenty years of precipitation-chemistry data from the National Atmospheric Deposition Program site at El Verde, Puerto Rico, demonstrate that three major sources control the composition of solutes in rain in eastern Puerto Rico. In order of importance, these sources are marine salts, temperate contamination from the Northern Hemisphere, and Sahara...
Landslides and sediment budgets in four watersheds in eastern Puerto Rico: Chapter F in Water quality and landscape processes of four watersheds in eastern Puerto Rico
Matthew C. Larsen
Sheila F. Murphy, Robert F. Stallard, editor(s)
2012, Professional Paper 1789-F
The low-latitude regions of the Earth are undergoing profound, rapid landscape change as forests are converted to agriculture to support growing population. Understanding the effects of these land-use changes requires analysis of watershed-scale geomorphic processes to better inform and manage this usually disorganized process. The investigation of hillslope erosion and...
Coastal wetlands of Chesapeake Bay
Andrew H. Baldwin, Patrick J. Kangas, J. Patrick Megonigal, Matthew C. Perry, Dennis F. Whigham, Darold P. Batzer
Darold P. Batzer, Andrew H. Baldwin, editor(s)
2012, Book chapter, Wetland habitats of North America: Ecology and conservation concerns
Wetlands are prominent landscapes throughout North America. The general characteristics of wetlands are controversial, thus there has not been a systematic assessment of different types of wetlands in different parts of North America, or a compendium of the threats to their conservation. Wetland Habitats of North America adopts a geographic...
Hydrology and climate of four watersheds in eastern Puerto Rico: Chapter C in Water quality and landscape processes of four watersheds in eastern Puerto Rico
Sheila F. Murphy, Robert F. Stallard
Sheila F. Murphy, Robert F. Stallard, editor(s)
2012, Professional Paper 1789-C
Puerto Rico lies directly in the path of the easterly trade winds, which deliver steady rainfall to the mountains and steer tropical wave systems toward the island. Hurricanes and tropical storms derived from these tropical waves differ in frequency and intensity, contributing to substantial interannual variation in precipitation and stream...
Demonstration optimization analyses of pumping from selected Arapahoe aquifer municipal wells in the west-central Denver Basin, Colorado, 2010–2109
Edward R. Banta, Suzanne S. Paschke
2012, Scientific Investigations Report 2012-5140
Declining water levels caused by withdrawals of water from wells in the west-central part of the Denver Basin bedrock-aquifer system have raised concerns with respect to the ability of the aquifer system to sustain production. The Arapahoe aquifer in particular is heavily used in this area. Two optimization analyses were...
Influence of the Amlia fracture zone on the evolution of the Aleutian Terrace forearc basin, central Aleutian subduction zone
Holly F. Ryan, Amy E. Draut, Katie M. Keranen, David W. Scholl
2012, Geosphere (8) 1254-1273
During Pliocene to Quaternary time, the central Aleutian forearc basin evolved in response to a combination of tectonic and climatic factors. Initially, along-trench transport of sediment and accretion of a frontal prism created the accommodation space to allow forearc basin deposition. Transport of sufficient sediment to overtop the bathymetrically high...
Effect of Feeding-Fasting Cycles on Oxygen Consumption and Bioenergetics of Yellow Perch
Steven R. Chipps, Travis W. Schaeffer, Daniel E. Spengler, Casey W. Schoenebeck, Michael L. Brown
2012, Transactions of the American Fisheries Society (141) 1480-1491
We measured growth and oxygen consumption of age-1 yellow perch Perca flavescenssubjected to ad libitum (control) or variable feeding cycles of 2 (i.e., 2 d of feed, 2 d of deprivation), 6, or 12 d for a 72-d period. Individual, female yellow perch (initial weight = 51.9 ± 0.9 g [mean...
Distribution, abundance and production of Hemimysis anomala in Lake Ontario
Ana Carolina Taraborelli, Nina Jakobi, Timothy B. Johnson, Kelly Bowen, Brent Boscarino
2012, Journal of Great Lakes Research (38) 73-78
Hemimysis anomala is one of the latest macroinvertebrates to invade the Laurentian Great Lakes. Since first reported in 2006, Hemimysis have been confirmed in several locations within the Great Lakes basin. However, little is known about the seasonal and spatial variation in demographics and dynamics of Hemimysis populations. We used a standardised pier-based methodology to describe...
Regional regression models of watershed suspended-sediment discharge for the eastern United States
David C. Roman, Richard M. Vogel, Gregory E. Schwarz
2012, Journal of Hydrologic Engineering (472-4723) 53-62
Estimates of mean annual watershed sediment discharge, derived from long-term measurements of suspended-sediment concentration and streamflow, often are not available at locations of interest. The goal of this study was to develop multivariate regression models to enable prediction of mean annual suspended-sediment discharge from available basin characteristics useful for most...
Water quality and mass transport in four watersheds in eastern Puerto Rico: Chapter E in Water quality and landscape processes of four watersheds in eastern Puerto Rico
Robert F. Stallard, Sheila F. Murphy
Sheila F. Murphy, Robert F. Stallard, editor(s)
2012, Professional Paper 1789-E
Water quality of four small watersheds in eastern Puerto Rico has been monitored since 1991 as part of the U.S. Geological Survey's Water, Energy, and Biogeochemical Budgets program. These watersheds represent a montane, humid-tropical environment and differ in geology and land cover. Two watersheds are located on granitic rocks, and...
A comparison among observations and earthquake simulator results for the allcal2 California fault model
Terry. E. Tullis, Keith B. Richards-Dinger, Michael Barall, James H. Dieterich, Edward H. Field, Eric M. Heien, Louise Kellogg, Fred F. Pollitz, John B. Rundle, Michael K. Sachs, Donald L. Turcotte, Steven N. Ward, M. Burak Yikilmaz
2012, Seismological Research Letters (83) 994-1006
In order to understand earthquake hazards we would ideally have a statistical description of earthquakes for tens of thousands of years. Unfortunately the ∼100‐year instrumental, several 100‐year historical, and few 1000‐year paleoseismological records are woefully inadequate to provide a statistically significant record. Physics‐based earthquake simulators can generate arbitrarily long...
Geologic framework for the national assessment of carbon dioxide storage resources: Powder River Basin, Wyoming, Montana, South Dakota, and Nebraska: Chapter B in Geologic framework for the national assessment of carbon dioxide storage resources
William H. Craddock, Ronald M. Drake II, John L. Mars, Matthew D. Merrill, Peter D. Warwick, Madalyn S. Blondes, Mayur A. Gosai, P.A. Freeman, Steven M. Cahan, Christina A. DeVera, Celeste D. Lohr
Peter D. Warwick, M.D. Corum, editor(s)
2012, Open-File Report 2012-1024-B
This report presents ten storage assessment units (SAUs) within the Powder River Basin of Wyoming, Montana, South Dakota, and Nebraska. The Powder River Basin contains a thick succession of sedimentary rocks that accumulated steadily throughout much of the Phanerozoic, and at least three stratigraphic packages contain strata that are suitable...
Simulating potential structural and operational changes for Detroit Dam on the North Santiam River, Oregon, for downstream temperature management
Norman L. Buccola, Stewart A. Rounds, Annett B. Sullivan, John C. Risley
2012, Scientific Investigations Report 2012-5231
Detroit Dam was constructed in 1953 on the North Santiam River in western Oregon and resulted in the formation of Detroit Lake. With a full-pool storage volume of 455,100 acre-feet and a dam height of 463 feet, Detroit Lake is one of the largest and most important reservoirs in the...
Space-time models for a panzootic in bats, with a focus on the endangered Indiana bat
Wayne E. Thogmartin, R. Andrew King, Jennifer A. Szymanski, Lori Pruitt
2012, Journal of Wildlife Diseases (48) 876-887
Knowledge of current trends of quickly spreading infectious wildlife diseases is vital to efficient and effective management. We developed space-time mixed-effects logistic regressions to characterize a disease, white-nose syndrome (WNS), quickly spreading among endangered Indiana bats (Myotis sodalis) in eastern North America. Our goal was to calculate and map the...
Assessment of undiscovered conventional oil and gas resources of six geologic provinces of China
Ronald R. Charpentier, Christopher J. Schenk, Michael E. Brownfield, Troy A. Cook, Timothy R. Klett, Janet K. Pitman, Richard M. Pollastro
2012, Fact Sheet 2012-3117
Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean volumes of undiscovered conventional petroleum resources in six geologic provinces of China at 14.9 billion barrels of oil, 87.6 trillion cubic feet of natural gas, and 1.4 billion barrels of natural-gas liquids....
Physiography, geology, and land cover of four watersheds in eastern Puerto Rico: Chapter A in Water quality and landscape processes of four watersheds in eastern Puerto Rico
Sheila F. Murphy, Robert F. Stallard, Matthew C. Larsen, William A. Gould
Sheila F. Murphy, editor(s)
2012, Professional Paper 1789-A
Four watersheds with differing geology and land cover in eastern Puerto Rico have been studied on a long-term basis by the U.S. Geological Survey to evaluate water, energy, and biogeochemical budgets. These watersheds are typical of tropical, island-arc settings found in many parts of the world. Two watersheds are located...
Flood of August 11–16, 2010, in the South Skunk River Basin, central and southeast Iowa
Kimberlee K. Barnes, David A. Eash
2012, Open-File Report 2012-1202
Severe thunderstorm activity during August 8–11, 2010 in central and southeast Iowa resulted in major flooding from August 11–16, 2010, in the South Skunk River Basin. Rain gages at Ames and Story City recorded 96-hour rainfall amounts of 9.61 and 8.70 inches, respectively. The majority of the rainfall occurred during...
Weathering, landscape equilibrium, and carbon in four watersheds in eastern Puerto Rico: Chapter H in Water quality and landscape processes of four watersheds in eastern Puerto Rico
Robert F. Stallard
Sheila F. Murphy, Robert F. Stallard, editor(s)
2012, Professional Paper 1789-H
The U.S. Geological Survey's Water, Energy, and Biogeochemical Budgets (WEBB) program research in eastern Puerto Rico involves a double pair-wise comparison of four montane river basins, two on granitic bedrock and two on fine-grained volcaniclastic bedrock; for each rock type, one is forested and the other is developed. A confounding...
