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Not all publications have extents, not all extents are completely accurate
Discrepancies between ages determined from scales and otoliths for alewives from the Great Lakes
Robert O’Gorman, D. Hugh Barwick, Charles A. Bowen
R.D. Summerfelt, G.E. Hall, editor(s)
1987, Book chapter, Age and growth of fish
Discrepancies between ages determined from otoliths and those determined from scales were common and, sometimes, quite large in alewives Alosa pseudoharengus collected in fall 1983 from Lakes Ontario, Huron, and Michigan. Among fish with 'otolith ages' of 4 or more, the percentages having identical 'scale ages' were 1% in Lake...
Seismicity map of the state of Pennsylvania
C. W. Stover, B.G. Reagor, S. T. Algermissen
1987, Miscellaneous Field Studies Map 1280
This map is one of a series of seismicity maps produced by the U. S. Geological Survey that show earthquake data of individual states or groups of states at the scale of 1:1,000,000. This map shows only those earthquakes with epicenters located within the boundaries of Pennsylvania, even though earthquakes...
Behavior of sensitivities in the one-dimensional advection-dispersion equation: Implications for parameter estimation and sampling design
Debra S. Knopman, Clifford I. Voss
1987, Water Resources Research (23) 253-272
The spatial and temporal variability of sensitivities has a significant impact on parameter estimation and sampling design for studies of solute transport in porous media. Physical insight into the behavior of sensitivities is offered through an analysis of analytically derived sensitivities for the one-dimensional form of the advection-dispersion equation. When...
On the functional optimization of a certain class of nonstationary spatial functions
G. Christakos, P.N. Paraskevopoulos
1987, Journal of Optimization Theory and Applications (52) 191-208
Procedures are developed in order to obtain optimal estimates of linear functionals for a wide class of nonstationary spatial functions. These procedures rely on well-established constrained minimum-norm criteria, and are applicable to multidimensional phenomena which are characterized by the so-called hypothesis of inherentity. The latter requires elimination of the polynomial,...
Oxidation of pyrite in an anoxic atmosphere
A. N. Thorpe, F. E. Senftle, Corrine Alexander, F.T. Dulong, R.B. LaCount, S. Friedman
1987, Fuel (66) 147-153
Pyrite (FeS2) inclusions in coal, when heated in an oxygen deficient atmosphere (approximately 1% oxygen), become coated with magnetic Fe3O4 due to oxidation. Most of the FeS2 can thus be removed from the coal by magnetic separation to reduce the sulphur concentration. The oxidation products have been studied in greater detail by...
Vibriosis in fish
G. L. Bullock
1987, Fish Disease Leaflet 77
Vvibriosis is a systemic bacterial infection of primarily marine and estuarine fishes, caused by bacteria of the genus Vibrio (Ross et al. 1968, Ghittino et al. 1972); it is a major cause of mortality in maricultur operations. It sometimes also occurs in freshwater species.Vibriosis has been known for centuries; outbreaks were recorded as...
Effects of contaminants on naiad mollusks (Unionidae): A review
M.E. Havlik, L. L. Marking
1987, Resource Publication 164
Although the uptake, storage, and elimination of contaminants by naiad mollusks has been studied, relatively little information is available on toxicity. Contaminants appear to have destroyed some populations directly by exerting toxic effects, or indirectly by causing or contributing to the elimination of essential food organisms or host fish. The...
Notes on sedimentation activities calendar year 1986
U.S. Interagency Advisory Committee on Water Data- Subcommittee on Sedimentation
1987, Report
This report is a digest of information furnished by Federal agencies conducting sedimentation investigations. The decision to publish the report was made in 1946, from a proposal by the Chairman of the Federal Interagency River Basin Committee, Subcommittee on Ground Water. The subcommittee approved the proposal and agreed to issue...
Formation of scalloped cross-bedding without unsteady flows
D. M. Rubin
1987, Journal of Sedimentary Petrology (57) 39-45
Scalloped cross-bedding --compound cross-bedding with internal bounding surfaces that cyclically scoop into the previously deposited foresets and into the sediment below the set--is a common and distinctive structure in eolian, fluvial, tidal, and nearshore-marine sands. Scalloped cross-bedding in shallow-marine deposits previously has been...
Crescentic dunes on the inner continental shelf off northern California
D.A. Cacchione, M.E. Field, D.E. Drake, G. B. Tate
1987, Geology (15) 1134-1137
Large crescentic dunes that resemble barchans have been discovered within elongate scour depressions on the northern California inner continental shelf by using side-scan sonar. These dunes appear to be migrating obliquely to the regional shelf gradient; a preferred offshore direction of transport is...