Conference Papers
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Reevaluation of large-scale dispersivities for a waste chloride plume: Effects of transient flow Reevaluation of large-scale dispersivities for a waste chloride plume: Effects of transient flow
This paper investigates the effects of transient groundwater flow on dispersion of a waste chloride plume in the basaltic aquifer beneath the Idaho (USA) National Engineering Laboratory. In an early application of numerical modeling techniques to the two-dimensional simulation of field-scale plumes, previous investigators identified longitudinal and transverse dispersivities using an...
Authors
Daniel J. Goode, Leonard F. Konikow
Selected geographic analysis projects: U. S. Fish and Wildlife Service's National Wetlands Research Center Selected geographic analysis projects: U. S. Fish and Wildlife Service's National Wetlands Research Center
No abstract available.
Authors
Floyd O. Stayner, James D. Scurry, James B. Johnston, Mary C. Watzin, Pasquale F. Roscigno
The New Ireland Basin; a frontier basin in Papua New Guinea The New Ireland Basin; a frontier basin in Papua New Guinea
No abstract available.
Authors
N.F. Exon, Michael S. Marlow
Development of an aquifer management model AQMAN3D Development of an aquifer management model AQMAN3D
A computer code that enables the use of the USGS Modular groundwater flow model for aquifermanagement modeling has been developed. Aquifermanagement techniques integrate groundwater flow modeling with linear quadratic optimization methods for the solution of various aquifer management problems. The model AQMAN3D, is a modified version of a previously developed two-dimensional AQMAN model...
Authors
Juan Carlos Puig, L. I. Rolon-Collazo, Ishmael Pagan-Trinidad
Field trip guide - American Water Resources Association Field trip guide - American Water Resources Association
No abstract available.
Authors
Matthew C. Larsen, Thalia D. Veve
Landslide processes in saprolitic soils of a tropical rain forest, Puerto Rico Landslide processes in saprolitic soils of a tropical rain forest, Puerto Rico
Shallow soil slips, earth and debris slides appear to be a primary mechanism of hillslope denudation in the rainforest of eastern Puerto Rico. Annual rainfall in excess of 4,000 mm, and thick sequences (up to 20 m) of residual soils (saprolite) combine to produce these landslides. Shear strength testing and observatons of tension cracks indicate that landslides may start as tensile...
Authors
Matthew C. Larsen, Andrew Simon
Rainfall-soil moisture relations in landslide-prone areas of a tropical rain forest, Puerto Rico Rainfall-soil moisture relations in landslide-prone areas of a tropical rain forest, Puerto Rico
Soil moisture conditions are not well documented in steep, tropical landslide-prone terrain. In the 11,330 ha Caribbean National Forest (CNF) in northeastern Puerto Rico more than 170 landslides that occurred from one to approximately 60 years ago have been mapped. Most of these landslides are shallow, with failure depths of 0.5 ot 7 m, and are associated with periods of intense...
Authors
Matthew C. Larsen, Angel J. Torres-Sanchez
On the rupture zone and effects of local geologic conditions on damages and ground motions for the Armenian earthquakes of December 7, 1988 On the rupture zone and effects of local geologic conditions on damages and ground motions for the Armenian earthquakes of December 7, 1988
No abstract available.
Authors
Roger D. Borcherdt, C. Langer, John R. Filson, D.W. Simpson, G. Glassmoyer, M. Andrews, E. Cranswick
A computer program for GEOphysical log data MANagement and plotting (GEOMAN) A computer program for GEOphysical log data MANagement and plotting (GEOMAN)
No abstract available.
Authors
I. E. Arroyo, Sigfredo Torres-Gonzalez, Ramon A. Carrasquillo
Introduction to stratigraphy and hydrocarbon occurrence in Oligocene and Miocene rocks of the Santa Barbara-Ventura and Santa Maria Basins of California Introduction to stratigraphy and hydrocarbon occurrence in Oligocene and Miocene rocks of the Santa Barbara-Ventura and Santa Maria Basins of California
The Santa Barbara-Ventura and Santa Maria basins of southern California have been of great interest to the oil industry because oil or gas has been produced from nearly all the sedimentary units ranging in age from the Cretaceous to the Pleistocene. In particular, the Neogene section of these basins is oil-rich, containing eight giant oil fields (greater than 100 million barrels) in the...
Authors
Margaret A. Keller