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68489 results.

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Page 2740, results 68476 - 68489

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Not all publications have extents, not all extents are completely accurate
Relationship between remotely-sensed vegetation indices, canopy attributes and plant physiological processes: What vegetation indices can and cannot tell us about the landscape
Edward P. Glenn, Alfredo R Huete, Pamela L. Nagler, Stephen G. Nelson
None, Sensors (8) 2136-2160
Vegetation indices (VIs) are among the oldest tools in remote sensing studies. Although many variations exist, most of them ratio the reflection of light in the red and NIR sections of the spectrum to separate the landscape into water, soil, and vegetation. Theoretical analyses and field studies have shown that...
Reconciling environmental and flood control goals on an arid-zone river: Case study of the Limitrophe Region of the lower Colorado River in the United States and Mexico
Edward P. Glenn, Kate Hucklebridge, Osvel Hinojosa-Huerta, Pamela L. Nagler, Jennifer Pitt
None, Environmental Management (41) 322-335
Arid zone rivers have highly variable flow rates, and flood control projects are needed to protect adjacent property from flood damage. On the other hand, riparian corridors provide important wildlife habitat, especially for birds, and riparian vegetation is adapted to the natural variability in flows on these rivers. While environmental...
Cross-borehole flow tests and insights into hydraulic connections in fractured mudstone and sandstone
John Williams, Pierre Lacombe, Carole D. Johnson, Frederick L. Paillet
None, Conference Paper, Symposium on the Application of Geophysics to Engineering and Environmental Problems
Cross-borehole flow tests provided insights into hydraulic connections in fractured and dipping mudstone and sandstone that were consistent with the lithostratigraphic and structural framework of a VOCcontaminated bedrock research site in west-central New Jersey. Two cross-borehole flow tests were completed. Each test involved measurement and analysis of transient flow in...
Characterizing the two-dimensional thermal conductivity distribution in a sand and gravel aquifer
Jeff M. Markle, Robert A. Schincariol, J.H. Sass, John W. Molson
None, Soil Science Society of America Journal (70) 1281-1294
Both hydrologic and thermal transport properties play a significant role in the movement of heat through permeable sedimentary material; however, the thermal conductivity is rarely characterized in detailed spatial resolution. As part of a study of the movement of thermal plumes through a sand and gravel aquifer, we have constructed...
Integrated geophysical characterization of the Winthrop Landfill Southern Flow Path, Winthrop, Maine
Cian B. Dawson, John W. Lane Jr., Eric A. White, Marcel Belaval
None, Conference Paper, Proceedings: Symposium on the application of geophysics to engineering and environmental problems
The U.S. Geological Survey (USGS), in cooperation with United Technologies Corporation, used an integrated suite of borehole, surface, and water-borne geophysical methods near the site of the former Winthrop Landfill, Winthrop, Maine, to investigate the hydrogeology controlling the transport of leachate from the landfill to nearby Annabessacook Lake. During the...
Perspectives on the diagnosis, epizootiology, and control of the 1973 duck plague epizootic in wild waterfowl at Lake Andes, South Dakota
Gary L. Pearson, Delmar R. Cassidy
None, Journal of Wildlife Diseases (33 ) 681-705
An epizootic of duck plague occurred in early 1973 in a population of 163,500 wild waterfowl, primarily mallards (Anas platyrhynchos), wintering on Lake Andes and the nearby Missouri River in southeastern South Dakota (USA). The diagnosis was based on pathologic lesions and confirmed by virus isolation. Control measures included quarantine, attempts...
Storm‐dominated bottom boundary layer dynamics on the Northern California Continental Shelf: Measurements and predictions
D.A. Cacchione, W.D. Grant, D.E. Drake, S.M. Glenn
None, Journal of Geophysical Research C: Oceans (92) 1817-1827
Measurements of near‐bottom velocity profiles in 85 m water depth during a storm on the continental shelf off northern California using the GEOPROBE tripod in December 1979 provided estimates of shear velocities, , and roughness lengths, , when the near‐bottom velocity profiles were logarithmic. These estimates agree within 90% confidence...
PIERRE PERRAULT: THE MAN AND HIS CONTRIBUTION TO MODERN HYDROLOGY
R. L. Nace
None, JAWRA (10) 633-647
ABSTRACT: Pierre Perrault, member of a bourgeois provincial family whose roots were in the Touraine region of France, grew up in Paris. One of six illustrious Brothers, all characterized by brilliance and diversity, he was educated as a lawyer but turned to finance and rose to a high position under...
Effect on evaporation of releases from reservoirs on Salt River, Arizona
G.E. Koberg
None, International Association of Scientific Hydrology - Bulletin (5) 37-44
By means of the energy-budget method, measurements of evaporation losses from four reservoirs on Salt River, Ariz., were determined to range from 57.5 to 69.9 inches for the 12-month period April 1958 to March 1959. Water is withdrawn from Roosevelt Lake at considerable depth and released through three run-of-the-river reservoirs. Because...
Sand and gravel resources of Puerto Rico
Rafael W. Rodriguez
None, Report
Many of Puerto Rico's beaches are eroding, and though rates of erosion vary, it is a major concern for the tourism and residential development industries. More than 85 percent of the population lives within 7 kilometers of the coast and they are heavily dependent on tourists that are attracted by...