Publications
Dive into our publications and explore the science from the Environmental Health Program (Toxic Substances Hydrology and Contaminant Biology).
GeoHEALTH-USGS Newsletter
GeoHEALTH-USGS Newsletter
The GeoHEALTH–USGS Newsletter—published since 2004—provides information on USGS science activities pertinent to safeguarding the health of fish, wildlife, domesticated animals, and people from environmental exposures to contaminants and pathogens.
Featured Science Activities
Featured Science Activities
Learn about our Featured Science Activities through our pages that highlight studies, publications, and results.
Filter Total Items: 4095
Associations between benthic flora and diel changes in dissolved arsenic, phosphorus, and related physico-chemical parameters Associations between benthic flora and diel changes in dissolved arsenic, phosphorus, and related physico-chemical parameters
Diel relationships between physical and chemical parameters and biomass were examined along a 57-km reach of Whitewood Creek, South Dakota, between 29 August and 2 September 1988. A time lag of ∼3-6 h for fluctuations in soluble reactive phosphorus (SRP) concentrations (ranging from 0.1 to 0.5 μM at the downstream sites) relative to dissolved arsenic (ranging from 0.3 to 1.2 μM as...
Authors
James S. Kuwabara
Reply to Dr. Stoesselfs comment on “Reaction paths and equilibrium end-points in solid-solution aqueous-solution systems” Reply to Dr. Stoesselfs comment on “Reaction paths and equilibrium end-points in solid-solution aqueous-solution systems”
In reply to the Critical Comment of R. K. Stoessell (this issue), limiting activity coefficients of bromide in halite (γNaBr) have been calculated by least-squares fitting of Simons et al.'s (1952) bromide distribution coefficient data for the Na(Cl,Br)-NaOH-H2O system at 35°C. Regular and subregular solidsolution model fits give γNaBr = 7.4 and γNaBr = 8.8, respectively. The Br contents...
Authors
Pierre D. Glynn, Eric J. Reardon, Niel Plummer, Eurybiades Busenberg
A spatial length scale analysis of turbulent temperature and velocity fluctuations within and above an orchard canopy A spatial length scale analysis of turbulent temperature and velocity fluctuations within and above an orchard canopy
Turbulent flow within and above an almond orchard was measured with three-dimensional wind sensors and fine-wire thermocouple sensors arranged in a horizontal array. The data showed organized turbulent structures as indicated by coherent asymmetric ramp patterns in the time series traces across the sensor array. Space-time correlation analysis indicated that velocity and temperature...
Authors
Y.S. Wang, D.R. Miller, D.E. Anderson, R.M. Cionco, J.D. Lin
Reply to comment on "The surface area of soil organic matter" Reply to comment on "The surface area of soil organic matter"
No abstract available.
Authors
Cary T. Chiou, Jiunn Fwu Lee, Stephen A. Boyd
Acoustic waveform logging: Advances in theory and application Acoustic waveform logging: Advances in theory and application
Full-waveform acoustic logging has made significant advances in both theory and application in recent years, and these advances have greatly increased the capability of log analysts to measure the physical properties of formations. Advances in theory provide the analytical tools required to understand the properties of measured seismic waves, and to relate those properties to such...
Authors
F.L. Paillet, C.H. Cheng, W.D. Pennington
Response to comment on "Use of colloid filtration theory in modeling movement of bacteria through a contaminated sandy aquifer" Response to comment on "Use of colloid filtration theory in modeling movement of bacteria through a contaminated sandy aquifer"
No abstract available.
Authors
Ronald W. Harvey, Stephen P. Garabedian
Natural toxic waters of Poas Volcano, Costa Rica Natural toxic waters of Poas Volcano, Costa Rica
No abstract available.
Authors
Susan L. Brantley, Gary L. Rowe, Leonard F. Konikow, Ward E. Sanford
Microbial distributions, activities, and movement in the terrestial subsurface: Experimental and theoretical studies Microbial distributions, activities, and movement in the terrestial subsurface: Experimental and theoretical studies
No abstract available.
Authors
Ronald W. Harvey, M.A. Widdowson
Hierarchical analytical approach to evaluating the transport and biogeochemical fate of organic compounds in sewage-contaminated groundwater, Cape Cod, Massachusetts Hierarchical analytical approach to evaluating the transport and biogeochemical fate of organic compounds in sewage-contaminated groundwater, Cape Cod, Massachusetts
No abstract available.
Authors
L. B. Barber
Analytical applications of inductively coupled plasma-mass spectrometry Analytical applications of inductively coupled plasma-mass spectrometry
No abstract available.
Authors
H. E. Taylor, John R. Garbarino
Transport of pathogens through soils and aquifers Transport of pathogens through soils and aquifers
No abstract available.
Authors
G. Bitton, R.W. Harvey
Hydrous pyrolysis of crude oil in gold-plated reactors Hydrous pyrolysis of crude oil in gold-plated reactors
Crude oils from Iraq and California have been pyrolyzed under hydrous conditions at 200 and 300°C for time periods up to 210 days, in gold-plated reactors. Elemental (vanadium, nickel), stable isotopic (carbon), and molecular (n-alkanes, acyclic isoprenoids, steranes, terpanes and aromatic steroid hydrocarbons) analyses were made on the original and pyrolyzed oils. Various conventional...
Authors
J.A. Curiale, P.D. Lundegard, Y.K. Kharaka