Book Chapters
Science Quality and Integrity
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 5,500 book chapters authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
Filter Total Items: 6063
Analysis of gravity data in volcanic terrain and gravity anomalies and subvolcanic intrusions in the Cascade Range, U.S.A., and at other selected volcanoes
Gravity data were investigated to reveal the presence of subvolcanic intrusions. With few exceptions, these intrusions produce a detectable gravity anomaly. In the past, these gravity anomalies have often been overlooked or misinterpreted because the data reduction procedure was inadequate. A pragmatic method for reducing and interpreting reconnaissance gravity data from volcanoes as well as gravi
Authors
David L. Williams, Carol A. Finn
Application of NMR spectroscopy for determining functionality in humic substances
No abstract available.
Authors
Robert L. Wershaw
Geomorphologic evidence for ground ice on Mars
For ground ice to exist on Mars, two conditions have to be met. One is the presence of permafrost; the second is the availability of water. Because the mean temperature of Mars’surface is − 80 C., permafrost 1–3 km thick occurs over the entire planet. Remote-sensing measurements suggest that water presently exists in the atmosphere and in the polar caps; frost has been observed at the Viking landi
Authors
Baerbel K. Lucchitta
Molecular weight and size measurements of humic substances
No abstract available.
Authors
R. L. Wershaw, George R. Aiken
Stable isotope and amino acid composition of estuarine dissolved colloidal material
No abstract available.
Authors
A.C. Sigleo, S.A. Macko
Aspects of the biogeochemistry of Big Soda Lake, Nevada
No abstract available.
Authors
Ronald S. Oremland, R. L. Smith, Charles W. Culbertson
A method for estimating proportion of area occupied
No abstract available.
Authors
P.H. Geissler, M.R. Fuller, J. A. Mosher
A review of organochlorine pesticide residues in ferruginous hawk eggs
Ten Ferruginous Hawk nests in northeast Oregon were studied from 1978 to 1980. Pesticide residues, eggshell thickness, and reproductive success from these nests will be reviewed. In addition, egg residues from other published studies in the Pacific Northwest and elsewhere will be discussed.
Authors
C. J. Henny