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,...
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...
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...
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...
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...
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....
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...
A comparison of coupled freshwater-saltwater sharp-interface and convective-dispersive models of saltwater intrusion in a layered aquifer system
Mary C. Hill
1988, Developments in Water Science 211-216
Simulated results of the coupled freshwater-saltwater sharp interface and convective-dispersive numerical models are compared by using steady-state cross-sectional simulations. The results indicate that in some aquifers the calculated sharp interface is located further landward than would be expected....
Wind directions predicted from global circulation models and wind directions determined from eolian sandstones of the western United States - A comparison
Judith T. Parrish, F. Peterson
1988, Sedimentary Geology (56) 261-282
Wind directions for Middle Pennsylvanian through Jurassic time are predicted from global circulation models for the western United States. These predictions are compared with paleowind directions interpreted from eolian sandstones of Middle Pennsylvanian through Jurassic age. Predicted regional wind directions correspond with at least three-quarters of the paleowind data from...
Suspended sediment transport under estuarine tidal channel conditions
R.W. Sternberg, K. Kranck, D.A. Cacchione, D.E. Drake
1988, Sedimentary Geology (57) 257-272
A modified version of the GEOPROBE tripod has been used to monitor flow conditions and suspended sediment distribution in the bottom boundary layer of a tidal channel within San Francisco Bay, California. Measurements were made every 15 minutes over three successive tidal cycles. They included mean velocity profiles from four...
Synthesis of late Paleozoic and Mesozoic eolian deposits of the Western Interior of the United States
R.C. Blakey, F. Peterson, G. Kocurek
1988, Sedimentary Geology (56) 3-125
Late Paleozoic and Mesozoic eolian deposits include rock units that were deposited in ergs (eolian sand seas), erg margins and dune fields. They form an important part of Middle Pennsylvanian through Upper Jurassic sedimentary rocks across the Western Interior of the United States. These sedimentary rock units comprise approximately three...
An isotopic study of a fluvial-lacustrine sequence: The Plio-Pleistocene koobi fora sequence, East Africa
T.E. Cerling, J. R. Bowman, J. R. O’Neil
1988, Palaeogeography, Palaeoclimatology, Palaeoecology (63) 335-356
Stable isotopic analyses of Plio-Pleistocene and modern sediments in the fluvial-lacustrine system occupying the Turkana Basin, East Africa provide constraints on the paleoenvironmental and diagenetic histories of the Pliocene through the Recent sediments in the basin. The δ13C values for carbonates in lacustrine sediments range from −15 to +22‰ relative to...
Aftershocks of the western Argentina (Caucete) earthquake of 23 November 1977: Some tectonic implications
C.J. Langer, G. A. Bollinger
1988, Tectonophysics (148) 131-146
An aftershock survey, using a network of eight portable and two permanent seismographs, was conducted for the western Argentina (Caucete) earthquake (MS 7.3) of November 23, 1977. Monitoring began December 6, almost 2 weeks after the main shock and continued for 11 days. The data set includes 185 aftershock hypocenters that...
Fossil diatoms and neogene paleolimnology
Bradbury J. Platt
1988, Palaeogeography, Palaeoclimatology, Palaeoecology (62) 299-316
Diatoms have played an important role in the development of Neogene continental biostratigraphy and paleolimnology since the mid-19th Century. The history of progress in Quaternary diatom biostratigraphy has developed as a result of improved coring techniques that enable sampling sediments beneath existing lakes coupled with improved chronological control (including radiometric...
Lacustrine varve formation through time
R.Y. Anderson, W.E. Dean
1988, Palaeogeography, Palaeoclimatology, Palaeoecology (62) 215-235
Studies using sediment traps in lakes reveal that the seasonal flux of sediment regulates both the composition and timing of deposition of materials that reach the bottoms of lakes. If the bottom waters of a lake are partly or totally anoxic, the seasonally deposited materials are preserved as annual groupings...
A proposed mechanism for the formation of spherical vivianite crystal aggregates in sediments
J.L. Zelibor Jr., F. E. Senftle, J.L. Reinhardt
1988, Sedimentary Geology (59) 125-142
Vivianite [Fe3(PO4)2·8H2O] is often found in the form of nodules composed of spherical aggregates of crystals. Crystallization of vivianite in agar gels of various concentrations yield crystal aggregates (nodules) that have spherical morphology and a bimodal size distribution. The aggregates were formed under both biotic and abiotic conditions. When special...
Pin stripe lamination: A distinctive feature of modern and ancient eolian sediments
S.G. Fryberger, Christopher J. Schenk
1988, Sedimentary Geology (55) 1-15
Pin stripe laminations are a distinctive feature of modern and ancient eolian sediments. In sets of eolian ripple (or translatent) strata they represent deposition of silt and very fine sand in the troughs of the advancing wind ripples. In sets of avalanche strata they probably result from the downward settling...
Use of airborne imaging spectrometer data to map minerals associated with hydrothermally altered rocks in the northern Grapevine Mountains, Nevada, and California
F.A. Kruse
1988, Remote Sensing of Environment (24) 31-51
Three flightlines of Airborne Imaging Spectrometer (AIS) data, acquired over the northern Grapevine Mountains, Nevada, and California, were used to map minerals associated with hydrothermally altered rocks. The data were processed to remove vertical striping, normalized using an equal area normalization, and reduced to reflectance relative to an average spectrum...
An improved dark-object subtraction technique for atmospheric scattering correction of multispectral data
Pat S. Chavez Jr.
1988, Remote Sensing of Environment (24) 459-479
Digital analysis of remotely sensed data has become an important component of many earth-science studies. These data are often processed through a set of preprocessing or “clean-up” routines that includes a correction for atmospheric scattering, often called haze. Various methods to correct or remove the additive haze component have been...
Precambrian ophiolites of Arabia: Geologic settings, U Pb geochronology, Pb-isotope characteristics, and implications for continental accretion
J.S. Pallister, J. S. Stacey, L. B. Fischer, W. R. Premo
1988, Precambrian Research (38) 1-54
Disrupted ophiolites occur in linear belts up to 900 km long between microplates that collided during the late Proterozoic to form the Arabian Shield. UPb zircon ages and Pb-isotope data from these ophiolitic rocks help constrain the history of accretion of the Arabian Shield and thereby contribute to the definition...
