The structure of subtidal currents within and around Lydonia Canyon: Evidence for enhanced cross-shelf fluctuations over the mouth of the canyon
M. Noble, B. Butman
1989, Journal of Geophysical Research - Oceans (94) 8091-8110
Between October 1980 and April 1981, currents were measured within Lydonia Canyon and on the adjacent shelf and slope. The amplitude of the subtidal currents over the shelf and slope ranged between 10 and 30 cm s−1, but within the canyon, they were typically smaller than 5 cm s−1. The...
Multiobjective sampling design for parameter estimation and model discrimination in groundwater solute transport
Debra S. Knopman, Clifford I. Voss
1989, Water Resources Research (25) 2245-2258
Sampling design for site characterization studies of solute transport in porous media is formulated as a multiobjective problem. Optimal design of a sampling network is a sequential process in which the next phase of sampling is designed on the basis of all available physical knowledge of the system. Three objectives...
Adaptive modeling, identification, and control of dynamic structural systems. I. Theory
Erdal Safak
1989, Journal of Engineering Mechanics (115) 2386-2405
A concise review of the fheory of adaptive modeling, identification, and control of dynamic structural systems based on discrete‐time recordings is presented. Adaptive methods have four major advantages over the classical methods: (1) Removal of the noise from the signal is done over the whole frequency band; (2) time‐varying characteristics...
A model of channel response in disturbed alluvial channels
A. Simon
1989, Earth Surface Processes and Landforms (14) 11-26
Dredging and straightening of alluvial channels between 1959 and 1978 in West Tennessee caused a series of morphologic changes along modified reaches and tributary streams. Degradation occurred for 10 to 15 years at sites upstream of the area of maximum disturbance and lowered bed-levels by as much as 6.1 m....
Statistical and simulation analysis of hydraulic-conductivity data for Bear Creek and Melton Valleys, Oak Ridge Reservation, Tennessee
J. F. Connell, Z. C. Bailey
1989, Water-Resources Investigations Report 89-4062
A total of 338 single-well aquifer tests from Bear Creek and Melton Valley, Tennessee were statistically grouped to estimate hydraulic conductivities for the geologic formations in the valleys. A cross-sectional simulation model linked to a regression model was used to further refine the statistical estimates for each of the formations...
Flow and hydraulic characteristics of the Knik-Matanuska River estuary, Cook Inlet, southcentral Alaska
S. W. Lipscomb
1989, Water-Resources Investigations Report 89-4064
A study of the riverine-estuarine reach of the Knik and Matanuska Rivers provided flow and hydraulic data for use in the design of additional bridges over the rivers. Hydraulic analysis is complicated because: (1) the lower reaches of the rivers merge in a complex system of interconnected channels; and (2)...
Paleomagnetism and tectonic rotation of the lower Miocene Peach Springs Tuff: Colorado Plateau, Arizona, to Barstow, California
Ray E. Wells, John W. Hillhouse
1989, GSA Bulletin (101) 846-863
We have determined remanent magnetization directions of the lower Miocene Peach Springs Tuff at 41 localities in western Arizona and southeastern California. An unusual northeast and shallow magnetization direction confirms the proposed geologic correlation of isolated outcrops of the tuff from the Colorado Plateau to Barstow, California, a distance of...
Modern sedimentary environments in a large tidal estuary, Delaware Bay
H.J. Knebel
1989, Marine Geology (86) 119-136
Data from an extensive grid of sidescan-sonar records reveal the distribution of sedimentary environments in the large, tidally dominated Delaware Bay estuary. Bathymetric features of the estuary include large tidal channels under the relatively deep (> 10 m water depth) central...
Mechanisms of Cenozoic tectonic rotation, Pacific Northwest Convergent Margin, U.S.A.
Ray E. Wells
1989, Book chapter, Paleomagnetic rotations and continental deformation. NATO ASI Series (C: Mathematical and Physical Sciences)
Large clockwise rotations (15–80°) are characteristic of Cenozoic volcanic and sedimentary rocks along the convergent margin of the northwestern United States. Abundant paleomagnetic data from 62–12 m.y. old rocks in forearc, arc, and backarc regions show that rotation increases with age and with proximity to the coast. Paleomagnetic and structural...
Strong correlation of major earthquakes with solid-earth tides in part of the eastern United States
R.E. Weems, W.H. Perry Jr.
1989, Geology (17) 661-664
East of the eastern American continental divide and south of fat 42.5°N, moderate to large historic earthquakes correlate strongly with times of high and low solid-earth tides. This effect is most pronounced when solar declination lies between 17°N and 17°S. Significant correlations also...
Obsolete English names of North American birds and their modern equivalents
Richard C. Banks
1988, Resource Publication 174
No abstract available....
Use of a portable electric barrier to estimate Chinook salmon escapement in a turbid Alaskan river
A. Palmisano, C. V. Burger
1988, North American Journal of Fisheries Management (8) 475-480
We developed a portable electric barrier to aid in the capture of adult chinook salmon Oncorhynchus tshawytscha undergoing spawning migrations up a turbid stream in south-central Alaska. In 1981, we tagged and released 157 chinook salmon after diverting them from the main-stem Killey River into a conventional trap with the aid...
Effects of variation in flow on distribution of northern squawfish (Ptychocheilus oregonensis) below McNary Dam on the Columbia River
M.P. Faler, L.M. Miller, K.I. Welke
1988, North American Journal of Fisheries Management (8) 30-35
The movements of 23 northern Squawfish Ptychocheilus oregonensis were monitored by radiotelemetry below a Columbia River hydroelectric dam during the out-migration of juvenile anadromous salmonids in 1984 and 1985. The work was done as part of a study to relate predator abundances and distribution to juvenile salmonid mortalities associated with...
Satellite image atlas of glaciers of the world
Richard S. Williams Jr., Jane G. Ferrigno, editor(s)
1988, Professional Paper 1386
U.S. Geological Survey Professional Paper 1386, Satellite Image Atlas of Glaciers of the World, contains 11 chapters designated by the letters A through K. Chapter A provides a comprehensive, yet concise, review of the "State of the Earth's Cryosphere at the Beginning of the 21st Century: Glaciers, Global Snow Cover,...
Geologic structure of the northern New Caledonia ridge, as inferred from magnetic and gravity anomalies
J.-Y. Collot, P. Rigolot, F. Missegue
1988, Tectonics (7) 991-1013
Bathymetric, gravity, and magnetic data collected in the southwest Pacific Ocean over the northern New Caledonia ridge show that the main geological units known from the island of New Caledonia extend northward from this island, beneath the Grand Lagon Nord, the Grand Passage, and the d'Entrecasteaux reefs. These data support...
The origin of summit basins on the Aleutian Ridge: Implications for block rotation of an arc massif
E.L. Geist, J.R. Childs, D.W. Scholl
1988, Tectonics (7) 327-341
It is proposed that many summit basins along the Aleutian Arc form from the clockwise rotation of blocks of the arc massif. Summit basins are arc-parallel grabens or half-grabens formed within the arc massif and are commonly located near or along the axis of late Cenozoic volcanism. Geomorphically, the Aleutian...
Effects of zinc smelter emissions on farms and gardens at Palmerton, PA
R. L. Chaney, W. N. Beyer, C.H. Gifford, L. Sileo
1988, Trace Substances in Environmental Health (22) 263-280
In 1979, before the primary Zn smelter at Palmerton was closed due to excessive Zn and Cd emissions and change in the price of Zn, we were contacted by a local veterinarian regarding death of foals (young horses) on farms near the smelter. To examine whether Zn or Cd contamination...
Organochlorine pesticides, polychlorinated biphenyls, and mercury in osprey eggs – 1970-79 – And their relationships to shell thinning and productivity
Stanley N. Wiemeyer, Christine M. Bunck, Alexander J. Krynitsky
1988, Archives of Environmental Contamination and Toxicology (17) 767-787
Osprey (Pandion haliaetus) eggs were collected in 14 states in 1970–79 and analyzed for organochlorine pesticides, polychlorinated biphenyls (PCBs), and mercury. Moderate shell thinning occurred in eggs from several areas. DDE was detected in all eggs, PCBs in 99%, DDD in 96%, dieldrin in 52%, and other compounds less frequently....
MARKOV: A methodology for the solution of infinite time horizon MARKOV decision processes
B. Kenneth Williams
1988, Applied Stochastic Models and Data Analysis (4) 253-271
Algorithms are described for determining optimal policies for finite state, finite action, infinite discrete time horizon Markov decision processes. Both value-improvement and policy-improvement techniques are used in the algorithms. Computing procedures are also described. The algorithms are appropriate for processes that are either finite or infinite, deterministic or stochastic, discounted...
Demographic Characteristics of a Maine Woodcock Population and Effects of Habitat Management
T.J. Dwyer, G.F. Sepik, E.L. Derleth, D.G. McAuley
1988, Fish and Wildlife Research No. 4
A population of American woodcock (Scolopax minor) was studied on a 3,401-ha area of the Moosehorn National Wildlife Refuge in northeastern Maine from 1976 through 1985. During 1976-83, from 4 to 64 clearcuts were created each year, opening up large contiguous blocks of forest. A combination of mist nets, ground...
Raptors and aircraft
D.G. Smith, D. H. Ellis, T.H. Johnson
Richard L. Glinski, Beth Giron Pendleton, Mary Beth Moss, Maurice N.= LeFranc Jr., Brian A. Millsap, Stephen W. Hoffman, editor(s)
1988, Book chapter, Proceedings of the Southwest Raptor Management Symposium and Workshop
Less than 5% of all bird strikes of aircraft are by raptor species, but damage to airframe structure or jet engine dysfunction are likely consequences. Beneficial aircraft-raptor interactions include the use of raptor species to frighten unwanted birds from airport areas and the use of aircraft to census raptor species....
Crested caracara
D. H. Ellis, D.G. Smith, W.H. Whaley, Catherine H. Ellis
Richard L. Glinski, Beth Giron Pendleton, Mary Beth Moss, Maurice N.= LeFranc Jr., Brian A. Millsap, Stephen W. Hoffman, editor(s)
1988, Book chapter, Proceedings of the Southwest Raptor Management Symposium and Workshop.
The crested caracara's range extends from the southern United States south to Tierra del Fuego. Although the caracara has been recorded in all of the southwestern states, it occurs regularly only in southern Arizona and central, southern and coastal Texas. Its distribution is closely linked to the availability of carrion....
An identifiable model for informative censoring
W.A. Link
E.J. Wegman, D.T. Gantz, J. J. Miller, editor(s)
1988, Book chapter, Computing Science and Statistics: Proceedings of the 20th Symposium on the Interface
The usual model for censored survival analysis requires the assumption that censoring of observations arises only due to causes unrelated to the lifetime under consideration. It is easy to envision situations in which this assumption is unwarranted, and in which use of the Kaplan-Meier estimator and associated techniques will...
Some considerations in modeling the mallard life cycle
Douglas H. Johnson, J.D. Nichols, M.J. Conroy, L.M. Cowardin
Milton W. Weller, editor(s)
1988, Book chapter, Waterfowl in Winter
We outline a population model proposed to accommodate the full life cycle of the mallard (Anas platyrhynchos}. Events during the breeding season are better understood than events at other times of the year, but recent findings suggest the importance of phenomena away from the breeding grounds. Several processes are discussed...
Habitat Suitability Index Models: Red king crab
Stephen C. Jewett, Christopher P. Onuf
1988, FWS/OBS 82/10.153
A review and synthesis of existing information were used to develop a Habitat Suitability Index (HSI) model for evaluating habitat of different life stages of red king crab (Paralithodes camtschatica). A model consolidates habitat use information into a framework appropriate for field application, and is scaled to produce an index...
