Objective procedures for lineament enhancement and extraction
G. K. Moore, F. A. Waltz
1983, Photogrammetric Engineering and Remote Sensing (49) 641-647
A longterm research goal at EROS Data Center is to develop automated, objective procedures for lineament mapping. In support of this goal, a five-step digital convolution procedure has been used to produce directionally enhanced images, which contain few artifacts and little noise. The main limitation of this procedure is that...
A method for estimating ground-water return flow to the lower Colorado River in the Yuma area, Arizona and California
Omar J. Loeltz, S. A. Leake
1983, Water-Resources Investigations Report 83-4220
No abstract available....
Altitude of the top of the Matawan Group-Magothy Formation, Suffolk County, Long Island, New York
Richard K. Krulikas, E. J. Koszalka, Thomas P. Doriski
1983, Open-File Report 83-137
The Magothy aquifer, with its irregular surface and deeply eroded buried valleys, has become the major source of fresh water in most of Suffolk Country. With the availability of recent data from deep wells and test holes, refinement of the surface-altitude contours has been possible and resulted in substantial revision...
The Exclusive Economic Zone: an exciting new frontier
Bonnie A. McGregor, Terry W. Offield
1983, Report
Seismological programs in Costa Rica
W. Montero
Henry Spall, editor(s)
1983, Earthquake Information Bulletin (USGS) (15) 11-15
At the beginning of the 1970's, a series of programs in seismology were initiated by different Costa Rican institutions, and some of these programs are still in the process of development. The institutions are Insituto Costaricense de Electricidad (ICE)- The Costa Rica Institute of Electricity La Universidad Nacional Autonoma (UNA)- The National...
Seismology in Chile
E. Kausel
1983, Earthquake Information Bulletin (USGS) (15) 16-22
The Department of Geology and Geophysics, which is under the faculties of Mathematics and Physical Sciences of the University of Chile, is the organization that is responsible for the Seismological Service of Chile and for installing,operating, and maintaining the seismological stations as well as all the strong-motion stations in Chile....
Atlantic Flyway review: Region V: Laurel, Prince Georges County, MD (390-0765)
Chandler S. Robbins
1983, North American Bird Bander (8) 32-32
Nets were operated at this suburban backyard station before and after work during the week, and all day on as many weekends as possible, from 23 August to 30 November. A trip to Spain interrupted banding in mid-September and accounted for the drop in both species and individuals banded. This also...
Earthquakes; May-June 1983
W. J. Person
1983, Earthquake Information Bulletin (USGS) (15) 233-235
Yellow birds stand out in a crowd
Colleen M. Handel, Robert E. Gill Jr.
1983, North American Bird Bander (8) 6-9
Highly visible auxiliary markers, such as neck collars, nasal saddles, patagial tags, and leg streamers, are used regularly and effectively with banding in studying migration and distribution of large birds (e.g. waterfowl, birds of prey, wading birds). Simply stated, a large bird can accommodate a marker that is large enough...
Nesting biology of laughing gulls in relation to agricultural chemicals in south Texas USA 1978-1981
Donald H. White, C. A. Mitchell, R. M. Prouty
1983, The Wilson Bulletin (95) 540-551
Various aspects of the breeding biology of Laughing Gulls (Larus atricilla) have been studied extensively in Florida (Dinsmore and Schreiber 1974, Schreiber et al. 1979, Schreiber and Schreiber 1980), New Jersey (Bongiorno 1970, Burger and Beer 1976, Burger 1976, Montevecchi 1978), and Massachusetts (Noble and Wurm 1943), but little is...
Ground water in the northeast part of Twentynine Palms Marine Corps Base, Bagdad area, California
J. H. Koehler
1983, Water-Resources Investigations Report 83-4053
The hydrologic characteristics of the Bagdad area, in the northeast part of Twentynine Palms Marine Corps Base, were investigated to determine the feasibility of obtaining a supply of ground water. Five test holes were drilled and three of these were completed with 6-inch casings. Ground water in the eastern part...
Land-use planning: One geologist's viewpoint
E-An Zen
1983, Environmental Conservation (10) 97-104
Planning for the best use of land and its resources should take fully into consideration the long-term consequences of each type of use in order to stretch out most beneficially the well-being of society in the future, and to protect the integrity of the land and its...
Use of reflectance spectra of native plant species for interpreting airborne multispectral scanner data in the East Tintic Mountains, Utah
N.M. Milton
1983, Economic Geology (78) 761-769
Representative spectra from three plant species were used to interpret the color components on a color ratio composite image. Most of the vegetation unit coincided with an altered rock unit, but many altered areas were not within the vegetation unit....
Lead-isotopic compositions of diverse igneous rocks and ore deposits from southwestern New Mexico and their implications for early Proterozoic crustal evolution in the western United States
J. S. Stacey, D. C. Hedlund
1983, Geological Society of America Bulletin (94) 43-57
U-Pb zircon measurements from some of the basement rocks in southwestern New Mexico have ages that range from 1,650 to 1,450 m.y.The largest ore deposits occur near Silver City in the southwest part of the region studied. They are associated with Laramide alkali...
Automated determination of bromide in waters by ion chromatography with an amperometric detector
G. S. Pyen, D. E. Erdmann
1983, Analytica Chimica Acta (149) 355-358
An automated ion chromatograph, including a program controller, an automatic sampler, an integrator, and an amperometric detector, was used to develop a procedure for the determination of bromide in rain water and many ground waters. Approximately 10 min is required to obtain a chromatogram. The detection limit for bromide is...
Preliminary analysis of shuttle multispectral radiometer data for Southern Egypt
L. C. Rowan, Alexander F.H. Goetz, M.J. Kingston
1983, Advances in Space Research (3) 125-132
The Shuttle Multispectral Infrared Radiometer (SMIRR) is a spectroradiometer covering the region from 0.5 to 2.5 ??m in 10 channels that acquired data from spots 100 m in diameter along the subspacecraft ground track. It was flown aboard the second flight of the space shuttle Columbia, November 12-14, 1981. Data...
Euler-Lagrangian computation for estuarine hydrodynamics
Ralph T. Cheng
1983, Conference Paper, Numerical Methods in Laminar and Turbulent Flow, Proceedings of the International Conference
The transport of conservative and suspended matter in fluid flows is a phenomenon of Lagrangian nature because the process is usually convection dominant. Nearly all numerical investigations of such problems use an Eulerian formulation for the convenience that the computational grids are fixed in space and because the vast majority...
Seasonal food of juvenile lake trout in U.S. waters of Lake Ontario
Joseph H. Elrod
1983, Journal of Great Lakes Research (9) 396-402
Stomach contents of 3,554 lake trout (Salvelinus namaycush), 100 to 449 mm in total length, captured with bottom trawls during April through October 1978–81 along the south shore of Lake Ontario were examined. Invertebrates appeared to be an important food of lake trout less than 200 mm long but were...
Volcanoes of the Cascade Range in North America
B. L. Foxworthy, M. Hile
1983, Earthquake Information Bulletin (USGS) (15) 60-71
Distribution and abundance of larval fish in the nearshore waters of western Lake Huron
Robert O’Gorman
1983, Journal of Great Lakes Research (9) 14-22
Ichthyoplankton was collected at 17 nearshore (bottom depth ≥5 m but ≤10 m) sites in western Lake Huron during 1973–75 with a 0.5-m net of 351-micron mesh towed at 99 m/min. Larvae of rainbow smelt (Osmerus mordax) dominated late spring and early summer catches and larvae of alewives (Alosa pseudoharengus)...
Water storage capacity of natural wetland depressions in the Devils Lake basin of North Dakota
A.P. Ludden, D.L. Frink, Douglas H. Johnson
1983, Journal of Soil and Water Conservation (38) 45-48
Photogrammetric mapping techniques were used to derive the water storage capacities of natural wetland depressions other than lakes in the Devils Lake Basin of North Dakota. Results from sample quarter-section areas were expanded to the entire basin. Depressions in the Devils Lake Basin have a maximum storage capacity of nearly...
Earthquake engineering in Peru
N.J Vargas
1983, Earthquake Information Bulletin (USGS) (15) 28-31
During the last decade, earthquake engineering research in Peru has been carried out at the Catholic University of Peru and at the Universidad Nacional de Ingeniera (UNI). The Geophysical Institute (IGP) under the auspices of the Organization of American States (OAS) has initiated in Peru other efforts in regional seismic...
Earthquakes; November-December 1982
W. J. Person
1983, Earthquake Information Bulletin (USGS) (15) 108-112
The months of November and December were quite active, seismically speaking, compared to the preceding months. The most devastating earthquake of the year occurred in Yemen on December 13 and killed hundreds of people. the largest earthquake of the year, a magnitude 7.7, occurred in the Pacific Tonga Islands on...
Squamous cell carcinoma in a free-ranging white-tailed deer (Odocoileus virginianus)
R. K. Stroud, Terry E. Amundson
1983, Journal of Wildlife Diseases (19) 162-164
No abstract available....
Outbreak of avian cholera on the wintering grounds of the Mississippi Valley Canada goose flock
R. M. Windingstad, R. M. Duncan, D. Thornburg
1983, Journal of Wildlife Diseases (19) 95-97
Avian cholera is reported for the first time in Canada geese, Branta canadensis, of the Mississippi Valley population. The disease was detected in weekly surveillance transects and was responsible to the loss of about 850 geese during the winter of 1978–1979 at localized areas in southern Illinois. Necropsies performed on 480...
