Satellites monitor Atlanta regional development
William J. Todd, C.C. Blackmon, R.G. Rudasill Jr.
1979, Practicing Planner (9) 6-10
Since the adoption of a Regional Development Plan in 1975, the Atlanta Regional Commission has investigated methods for monitoring regional development patterns in a periodic, efficient manner. A promising approach appears to be the use of Landsat satellite data. In cooperation with the Earth Resources Observation Systems (EROS) Data Center,...
A two-dimensional hydrodynamic model of a tidal estuary
Roy A. Walters, Ralph T. Cheng
1979, Advances in Water Resources (2) 177-184
A finite element model is described which is used in the computation of tidal currents in an estuary. This numerical model is patterned after an existing algorithm and has been carefully tested in rectangular and curve-sided channels with constant and variable depth. One of the common uncertainties in this class...
Geodolite measurements of deformation near Hollister, California, 1971-1978
James C. Savage, W.H. Prescott, Michael Lisowski, N. King
1979, Journal of Geophysical Research B: Solid Earth (84) 7599-7615
A 24‐station trilateration network spanning the San Andreas and Calaveras faults near Hollister, California, has been surveyed each year between 1971 and 1978, inclusive. Two moderate (ML = 5) earthquakes have occurred within the network during the interval. No convincing preseismic or coseismic anomalies associated with those earthquakes have been identified....
Deformation across the Salton Trough, California, 1973-1977
James C. Savage, W.H. Prescott, Michael Lisowski, N. King
1979, Journal of Geophysical Research B: Solid Earth (84) 3069-3079
A trilateration network extending across the San Andreas, San Jacinto, and Elsinore faults in the vicinity of the Salton Sea, California, has been surveyed to very high precision several times in the 5‐year interval 1973–1977. The average strain across the entire network is essentially a uniaxial north‐south contraction at the...
Managing the rippling stream: decisionmaking in natural resource administration
Harvey R. Doerksen, Berton L. Lamb
1979, Journal of the American Water Resources Association (15) 1707-1715
This article addresses the conflict which exists within the water resources decisionmaking arena over the allocation of water for instream uses. The discussion reviews the literature on public administration regarding decisionmaking, and is based on research performed by the authors which synthesizes a model of decisionmaking. This model can be...
Robust estimation of population size when capture probabilities vary among animals
K.P. Burnham, W.S. Overton
1979, Ecology (60) 927-936
A model is given for multiple recapture studies on closed populations which allows capture probabilities to vary among individuals. The capture probability of each individual is assumed to be constant over time. Based on this model we give a nonparametric estimation procedure for population size. The estimator...
Contribution of groundwater modeling to planning
J.E. Moore
1979, Journal of Hydrology (43) 121-128
The consideration of groundwater in water-resource planning frequently has been neglected because many planners believed that groundwater could not be adequately evaluated in terms of availability, quality, cost of development, or effect of development on the surface-water supply. The development of predictive groundwater models now provides the water planner with...
Simulated changes in potentiometric levels resulting from groundwater development for phosphate mines, west-central Florida
W.E. Wilson, J. M. Gerhart
1979, Journal of Hydrology (43) 491-515
A digital model of two-dimensional groundwater flow was used to predict changes in the potentiometric surface of the Floridan aquifer resulting from groundwater development for proposed and existing phosphate mines during 1976-2000. The modeled area covers 15,379 km2in west-central Florida.In 1975, groundwater withdrawn from the Floridan aquifer for irrigation, phosphate...
Distributary channels, sand lobes, and mesotopography of Navy Submarine Fan, California Borderland, with applications to ancient fan sediments
William Normark, D.J.W. Piper, Gordon R. Hess
1979, Sedimentology (26) 749-774
The deep-tow instrument package of Scripps Institution of Oceanography provides a unique opportunity to delineate small-scale features of a size comparable to those features usually described from ancient deep-sea fan deposits. On Navy Fan, the deep-tow side-scanning sonar readily detected steep channel walls and steps and terraces within channels. The...
Earthquakes near Parkfield, California: Comparing the 1934 and 1966 sequences
W. H. Bakun, T.V. McEvilly
1979, Science (205) 1375-1377
Moderate-sized earthquakes (Richter magnitude ML 5 1/2) have occurred four times this century (1901, 1922, 1934, and 1966) on the San Andreas fault near Parkfield in central California. In many respects the June 1966 sequence was a remarkably detailed repetition of the June 1934 sequence, suggesting a recurring recognizable pattern...
A parametric generalization of the Hayne estimator for line transect sampling
Kenneth P. Burnham
1979, Biometrics (35) 587-595
The Hayne model for line transect sampling is generalized by using an elliptical (rather than circular) flushing model for animal detection. By assuming the ration of major and minor axes lengths is constant for all animals, a model results which allows estimation of population density based directly upon sighting...
Nonparametric estimation of plant density by the distance method
S.A. Patil, K.P. Burnham, J.L. Kovner
1979, Biometrics (35) 597-604
A relation between the plant density and the probability density function of the nearest neighbor distance (squared) from a random point is established under fairly broad conditions. Based upon this relationship, a nonparametric estimator for the plant density is developed and presented in terms of order statistics. Consistency...
Oil and gas in offshore tracts: Estimates before and after drilling
M.F. Uman, W.R. James, H.R. Tomlinson
1979, Science (205) 489-491
Estimates of volumes of recoverable hydrocarbons underlying offshore tracts are made by the U.S. Geological Survey prior to the sale of leases and after drilling on those leases. Comparisons of these estimates show a moderate positive correlation and no evidence for relative bias, although the precision of the predictions is...
Risk preferences and flood insurance
Emil D. Attanasi, Michael R. Karlinger
1979, American Journal of Agricultural Economics (61) 490-495
A detailed theoretical model characterizing the individual's decision to purchase flood insurance is specified and the magnitude of the risk parameter is estimated using data based on transactions of flood insurance purchases. Empirical results for several samples of this subset of the general population indicated that consumers exhibited a relatively...
Nature of firm expectations in petroleum exploration
Emil D. Attanasi
1979, Land Economics (55) 299-312
Recent interest in the state of the United States domestic petroleum industry has resulted in an increased concern regarding the ability of current large- scale econometric models to provide useful predictions about supply price sensitivity and about the effects of differing policy options on future supply. The petroleum industry's exploration...
Uptake of methoxychlor from food and water by the American toad (Bufo americanus)
R.J. Hall, D. Swineford
1979, Bulletin of Environmental Contamination and Toxicology (23) 335-337
Various studies (Mulla et al. 1963; Ferguson and Gilbert 1967; Cooke 1973) have examined the effects of pesticides on anuran amphibians, but the routes of contaminant uptake by transformed amphibians have not been evaluated. The need of frogs and toads to imbibe water from natural surface water would seem to...
Human related mortality of birds in the United States
R.C. Banks
1979, Special Scientific Report - Wildlife 215
Modern man serves as both a direct and an indirect cause of the death of birds. In the early 1970's, human activity was responsible for the death of approximately 196 million birds per year, or about 1.9% of the wild birds of the continental United States that died each...
Marine magnetic anomalies
Richard J. Blakely, S.C. Cande
1979, Reviews of Geophysics (17) 204-214
Marine magnetic data have been available for many years from all of the world's oceans, and their contribution to marine geophysics and geology is profound. These data, for example, have allowed charting the age of the ocean floor, reconstruction of the geologic history of the major ocean basins, development of...
Characterization of EV-2, a virus isolated from European eels (Anguilla anguilla) with stomatopapilloma
T. Nagabayashi, K. Wolf
1979, Journal of Virology (30) 358-364
A virus designated EV-2 has been isolated from external tumor tissue and internal organs of European eels (Anguilla anguilla) with stomatopapilloma. It contains RNA and is ether, acid, and temperature labile above 4°C, and concentrated preparations agglutinate chicken and sheep erythrocytes. The addition of actinomycin D during the first 2.75...
Altitude-age relationships of the lunar maria
Baerbel K. Lucchitta, J. M. Boyce
1979, Conference Paper
Altitudes and relative ages of mare surface units were compared to test if a systematic correlation in height of lava eruption surfaces and age might reflect a corresponding increase in depth of the magma chamber with time; in addition the altitudes were studied to shed light on the time and...
Strain-softening instability model for the San Fernando earthquake
W.D. Stuart
1979, Science (203) 907-910
Changes in the ground elevation observed before and immediately after the 1971 San Fernando, California, earthquake are consistent with a theoretical model in which fault zone rocks are strain-softening after peak stress. The model implies that the slip rate of the fault increased to about 0.1 meter per year near...
Modern biogenic gas-generated craters (sea-floor “pockmarks”) on the Bering Shelf, Alaska
Nelson C. Hans, D.R. Thor, Mark W. Sandstrom, Keith A. Kvenvolden
1979, GSA Bulletin (90) 1144-1152
As many as 1,340 small craters per square kilometre cover the sea floor of Norton Sound in the northeastern Bering Sea. The craters are circular pits, 1 to 10 m in diameter and less than 1 m deep, observed on sonographs over 20,000 km2 of northern Norton Sound sea floor. Craters...
Digital image processing system For Landsat 3
George Harris Jr.
1979, Conference Paper, Proceedings volume 0183, Space Optics II
The Department of Interior (DOI) and the National Aeronautics and Space Administration (NASA) have entered into a joint program to provide a digital image processing system in support of the Landsat 3 mission. NASA will provide the data reception and pre-processing facilities, while the DOI provides the production image processing...
Modeling sandhill crane population dynamics
Douglas H. Johnson
1979, Special Scientific Report - Wildlife 222
The impact of sport hunting on the Central Flyway population of sandhill cranes (Grus canadensis) has been a subject of controversy for several years. A recent study (Buller 1979) presented new and important information on sandhill crane population dynamics. The present report is intended to incorporate that and other information...
Mathematics and mallard management
L.M. Cowardin, Douglas H. Johnson
1979, Journal of Wildlife Management (43) 18-35
Waterfowl managers can effectively use simple population models to aid in making management decisions. We present a basic model of the change in population size as related to survival and recruitment. A management technique designed to increase survival of mallards (Anas platyrhynchos) by limiting harvest on the Chippewa National Forest,...
