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Page 4703, results 117551 - 117575

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Publication Extents

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Hydrogeologic evaluation of selected stratified-drift deposits in Connecticut
S. J. Grady, E. H. Handman
1983, Water-Resources Investigations Report 83-4010
Test borings at 28 sites and seismic-refraction profiles at 16 sites provide data on the saturated thickness and grain-size characteristics of stratified-drift deposits in five areas of Connecticut. These data, together with information on the areal extent of the deposits and their proximity to sources of induced recharge, can be...
Analysis of the world distribution of metal-rich subsea manganese nodules
Vincent Ellis McKelvey, Nancy A. Wright, Roger W. Bowen
1983, Circular 886
Publicly available data on the composition of subsea manganese nodules extend previous reports of differences in average metal contents from ocean to ocean and of variations related to latitude and depth. Pacific Ocean nodules have the highest average manganese, nickel, and copper contents, and Atlantic Ocean nodules have the highest...
Reclamation of mined lands in the western coal region
Perry F. Narten, S.F. Litner, J.W. Allingham, Lee Foster, D.M. Larsen, H.C. McWreath
1983, Circular 872
In 1978, a group of scientists from several Federal agencies examined reclamation work at 22 coal mines in seven western States. The results of these examinations were not used to derive quantitative predictions of the outcome of reclamation work but rather to determine the general requirements for revegetation success. Locally,...
Measurement of bedload discharge in nine Illinois streams with the Helley-Smith sampler
Julia B. Graf
1983, Water-Resources Investigations Report 83-4136
Samples collected with the Helley-Smith bedload sampler provide useful information about transport of sand-size sediment in Illinois streams. Samples provide the basis for bedload-discharge rating curves for the Rock and Kaskaskie Rivers and Henderson Creek. Comparison of measured bedload discharge with bedload discharge computed for selected flow conditions from channel...
Front-tracking model for convective transport in flowing ground water
S. P. Garabedian, Leonard F. Konikow
1983, Water-Resources Investigations Report 83-4034
A finite-difference numerical model that simulates the convective transport of water or tracer particles through porous media is described. It can be applied to one- or two-dimensional problems involving either steady-state or transient flow. The model tracks representative water or tracer particles, initially located along specified lines, as they move...
Late Proterozoic island-arc complexes and tectonic belts in the southern part of the Arabian Shield, Kingdom of Saudi Arabia
William R. Greenwood, D. B. Stoeser, R.J. Fleck, J. S. Stacey
1983, Open-File Report 83-296
Two main subdivisions of layered rocks are recognized in the southern Arabian Shield south of lat 22? N. These are an older ensimatic-arc complex, which formed 1100-800 m.y. ago, and a younger marginal-arc complex, which formed 800-690 m.y. ago. The older ensimatic-arc complex, located in the southwestern part of the...
A statistical analysis of the quality of surface water in Nebraska
Richard A. Engberg
1983, Water Supply Paper 2179
This report provides descriptive statistics for 29 chemical or biological constituents for 109 stream sites in Nebraska sampled by the U.S. Geological Survey beginning in 1946. Also provided for each site are regression equations relating specific conductance to each of 12 chemical constituents and a regression equation relating specific conductance...
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: March 1983
John B. Townshend, J.E. Papp, E.A. Sauter, L.Y. Torrence, T.K. Cunningham
1983, Open-File Report 83-300-C
The preliminary geomagnetic data included here is made available to scientific personnel and organizations, as part of a cooperative effort and on a data exchange basis because of the early need by some users. To avoid delay, all of the data is copied from original forms processed at the observatory;...
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: February 1983
John B. Townshend, J.E. Papp, E.A. Sauter, T.K. Cunningham, L.Y. Torrence
1983, Open-File Report 83-300-B
The preliminary geomagnetic data included here is made available to scientific personnel and organizations, as part of a cooperative effort and on a data exchange basis because of the early need by some users. To avoid delay, all of the data is copied from original forms processed at the observatory;...
Daily water and sediment discharges from selected rivers of the eastern United States; a time-series modeling approach
Michael G. Fitzgerald, Michael R. Karlinger
1983, Water Supply Paper 2216
Time-series models were constructed for analysis of daily runoff and sediment discharge data from selected rivers of the Eastern United States. Logarithmic transformation and first-order differencing of the data sets were necessary to produce second-order, stationary time series and remove seasonal trends. Cyclic models accounted for less than 42 percent...