Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16782
Quantifying viruses and bacteria in wastewater—Results, interpretation methods, and quality control
Membrane bioreactors (MBR), used for wastewater treatment in Ohio and elsewhere in the United States, have pore sizes small enough to theoretically reduce concentrations of protozoa and bacteria, but not viruses. Sampling for viruses in wastewater is seldom done and not required. Instead, the bacterial indicators Escherichia coli (E. coli) and fecal coliforms are the required microbial measures of
Authors
Donna S. Francy, Erin A. Stelzer, Rebecca N. Bushon, Amie M. G. Brady, Brian E. Mailot, Susan K. Spencer, Mark A. Borchardt, Ashley G. Elber, Kimberly R. Riddell, Terry M. Gellner
Simulations of flow and prediction of sediment movement in Wymans Run, Cochranton Borough, Crawford County, Pennsylvania
In small watersheds, runoff entering local waterways from large storms can cause rapid and profound changes in the streambed that can contribute to flooding. Wymans Run, a small stream in Cochranton Borough, Crawford County, experienced a large rain event in June 2008 that caused sediment to be deposited at a bridge. A hydrodynamic model, Flow and Sediment Transport and Morphological Evolution of
Authors
Elizabeth Hittle
Analysis of the transport of sediment by the Suncook River in Epsom, Pembroke, and Allenstown, New Hampshire, after the May 2006 flood
During May 13-16, 2006, rainfall in excess of 8.8 inches flooded central and southern New Hampshire. On May 15, 2006, a breach in a bank of the Suncook River in Epsom, New Hampshire, caused the river to follow a new path. In order to assess and predict the effect of the sediment in, and the subsequent flooding on, the river and flood plain, a study by the U.S. Geological Survey (USGS) characterizi
Authors
Robert H. Flynn
Overview of flow studies for recycling metal commodities in the United States
Metal supply consists of primary material from a mining operation and secondary material, which is composed of new and old scrap. Recycling, which is the use of secondary material, can contribute significantly to metal production, sometimes accounting for more than 50 percent of raw material supply. From 2001 to 2011, U.S. Geological Survey (USGS) scientists studied 26 metals to ascertain the stat
Authors
Scott F. Sibley
Elevation trends and shrink-swell response of wetland soils to flooding and drying
Given the potential for a projected acceleration in sea-level rise to impact wetland sustainability over the next century, a better understanding is needed of climate-related drivers that influence the processes controlling wetland elevation. Changes in local hydrology and groundwater conditions can cause short-term perturbations to marsh elevation trends through shrink–swell of marsh soils. To be
Authors
Donald R. Cahoon, Brian C. Perez, Bradley D. Segura, James C. Lynch
Augmenting superpopulation capture-recapture models with population assignment data
Ecologists applying capture-recapture models to animal populations sometimes have access to additional information about individuals' populations of origin (e.g., information about genetics, stable isotopes, etc.). Tests that assign an individual's genotype to its most likely source population are increasingly used. Here we show how to augment a superpopulation capture-recapture model with such in
Authors
Zhi Wen, Kenneth Pollock, James Nichols, Peter Waser
Population densities of painted buntings in the southeastern United States
The eastern population trend of Passerina ciris (Painted Bunting) declined 3.5% annually during the first 30 yrs of the Breeding Bird Survey (BBS, 1966–1996). Recently, the US Fish and Wildlife Service listed Painted Buntings as a focal species. Surveys for this focal species for the next 10 yrs (BBS, 1997–2007), however, are too low (
Authors
J. Michael Meyers
Physical properties of sediment from the Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope
This study characterizes cored and logged sedimentary strata from the February 2007 BP Exploration Alaska, Department of Energy, U.S. Geological Survey (BPXA-DOE-USGS) Mount Elbert Gas Hydrate Stratigraphic Test Well on the Alaska North Slope (ANS). The physical-properties program analyzed core samples recovered from the well, and in conjunction with downhole geophysical logs, produced an extensiv
Authors
William J. Winters, Michael Walker, Robert Hunter, Timothy S. Collett, Ray M. Boswell, Kelly K. Rose, William F. Waite, Marta Torres, Shirish Patil, Abhijit Dandekar
Continuous resistivity profiling data from the Corsica River Estuary, Maryland
Submarine groundwater discharge (SGD) into Maryland's Corsica River Estuary was investigated as part of a larger study to determine its importance in nutrient delivery to the Chesapeake Bay. The Corsica River Estuary represents a coastal lowland setting typical of much of the eastern bay. An interdisciplinary U.S. Geological Survey (USGS) science team conducted field operations in the lower estuar
Authors
V.A. Cross, J.F. Bratton, C.R. Worley, John Crusius, K.D. Kroeger
Informal trail monitoring protocols: Denali National Park and Preserve
The National Park Service (NPS) accommodates nearly 300 million visitors per year, visitation that presents managers with substantial challenges at some 394 park units across some 83.6 million acres of protected lands. An increasing number of visitors inevitably contribute negative effects to fragile natural and cultural resources. Such visitation - related resource impacts can degrade natural con
Authors
Jeffrey L. Marion, Jeremy Wimpey
Pb-concentrations and Pb-isotope ratios in soils collected along an east-west transect across the United States
Analytical results for Pb-concentrations and isotopic ratios from ca. 150 samples of soil A horizon and ca. 145 samples of soil C horizon collected along a 4000-km east–west transect across the USA are presented. Lead concentrations along the transect show: (1) generally higher values in the soil A-horizon than the C-horizon (median 21 vs. 16.5 mg/kg), (2) an increase in the median value of the so
Authors
Clemens Reimann, David B. Smith, Laurel G. Woodruff, Belinda Flem