Thomas C. Winter
1984, Water Resources Research (20) 1166-1166
No abstract available....
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Publication Extents
Not all publications have extents, not all extents are completely accurateR.Y. Anderson, E.B. Nuhfer, W.E. Dean
1984, Science (225) 505-508
Volcanic ash from the eruption of Mount St. Helens on 18 May 1980 fell into Williams Lake in eastern Washington and was temporarily suspended at the sediment-water interface. After several months of compaction, the ash layer broke up and sank into lower density uncompacted lake sediment. Stratigraphic time displacements of...
R.Z. Poore, R.K. Matthews
1984, Marine Micropaleontology (9) 111-134
Oxygen isotope analyses of late Eocene and Oligocene planktonic foraminifers from low and middle latitude sites in the Atlantic Basin show that different species from the same samples can yield significantly different isotopic values. The range of isotopic values observed between species is greatest at low-latitudes and declines poleward. Many...
H. Edward Clifton, John R. Dingler
1984, Marine Geology (60) 165-198
Wave-formed sedimentary structures can be powerful interpretive tools because they reflect not only the velocity and direction of the oscillatory currents, but also the length of the horizontal component of orbital motion and the presence of velocity asymmetry within the flow. Several of these aspects can be related through standard...
J.R. Dingler, H.E. Clifton
1984, Marine Geology (60) 219-233
Oscillation ripples form on subaqueous sand beds when wave-generated, near-bottom water motions are strong enough to move sand grains. The threshold of grain motion is the lower bound of the regime of oscillation ripples and the onset of sheet flow is the upper bound. Based on the relation between ripple...
Duncan M. FitzGerald, S. Penland, D. Nummedal
1984, Marine Geology (60) 355-376
A study of the East Frisian Islands has shown that the plan form of these islands can be explained by processes of inlet sediment bypassing. This island chain is located on a high wave energy, high tide range shoreline where the average deep-water significant wave height exceeds 1.0 m and...
1984, Water-Resources Investigations Report 84-4188-A
The U.S. Geological Survey has begun a research project to improve understanding of the mobilization, transport, and fate of petroleum contaminants in the shallow subsurface and to use this understanding to develop predictive models of contaminant behavior. The project site is near Bemidji in northern Minnesota where an accidental spill...
Water Resources Division, U.S. Geological Survey
1984, Report
The National Cartographic Information Center (NCIC) exists to help you find maps of all kinds and much of the data and materials used to compile and to print them. NCIC collects, sorts and describes all types of cartographic information from Federal, State and local government agencies and, where possible, from...
Richard L. Knight, Susan K. Knight
1984, Journal of Wildlife Management (48) 999-1004
Wintering populations of bald eagles show a close association with open water (Spencer 1976, Steenhof 1978). With the dramatic increase in the use of waterways for recreational activity in recent decades (Brockman and Merriam 1973, Jensen 1973), concern has arisen regarding the effects of boating activity on wintering eagles...
Harry M. Ohlendorf, Michael R. Miller
1984, Journal of Wildlife Management (48) 867-877
Concern has been expressed that the extensive use of organochlorine pesticides in California may be exposing waterfowl to hazardous contaminant levels. The objectives of our study were to: (1) determine concentrations of organochlorines in northern pintails (Anas acuta) from five important waterfowl wintering areas in California; (2) compare concentrations of...
J. A. Powell, G. B. Rathbun
1984, Northeast Gulf Science (7) 1-28
A review of historical and recent records of manatee (Trichechus manatus) sightings along the coast of the northern Gulf of Mexico indicates that their numbers have declined in Texas, but increased in Louisiana and Mississippi. This is due to their extirpation in Mexico and dramatic increase along the southern Big...
W. James Fleming, J.A. Rodgers Jr., C. J. Stafford
1984, Colonial Waterbirds (7) 88-93
One egg was removed from five Wood Stork (Mycteria americana) nests at each of eight colonies in central and northern Florida in 1982. DDE and mercury were present in all eggs with concentrations ranging up to 9.4 and 0.73 ppm wet weight, respectively. PCBs were detected in 25 eggs (63%)...
D. G. Woodward
1984, Conference Paper
Sedimentary rocks of Paleozoic age in the Hollandale embayment in southeastern Minnesota are as much as 2,000 feet thick and, with the underlying Hinckley sandstone of Proterozoic age, comprise the following five layered aquifers (beginning with the oldest): the Mount Simon-Hinckley, Ironton-Galesville, Prairie du Chien-Jordan, St. Peter and Upper Carbonate....
D. G. Woodward
1984, Report
Buried-drift aquifers are stratified sand and (or) gravel aquifers in glacial deposits that cannot be seen or inferred at the land surface. During the Pleistocene Epoch, four continental glaciations advanced and retreated across Minnesota, blanketing the bedrock surface with drift as much as 700 feet thick (fig. 1). Most of...
R. G. Brown
1984, Conference Paper, Understanding Watershed and Lake Management Conference, Bloomington, Minnesota, March 23, 1984 [Proceedings]
No abstract available....
L. C. Shaw
1984, Water Resources Bulletin 16
No abstract available....
Steven M. Gorelick, Barbara Evans, Irwin Remson
1984, Water Resources Research (20) 745-745
No abstract available....
F.N. Dalton, W.N. Herkelrath, D.S. Rawlins, J.D. Rhoades
1984, Science (224) 989-990
Two parallel metallic rods were used as a wave guide to measure the dielectric constant and electrical conductivity of soils having different electrical conductivities but the same water content. Measurements showed that the two parameters were sufficiently independent to permit simultaneous determinations of water content and bulk electrical conductivity....
G.A. Miller, John R. Dyni, D.R. Dietz
1984, Conference Paper, 17th oil shale symposium proceedings
Comparison of several aspects of surface and underground methods of mining for large-scale oil shale extraction in the Piceance Creek Basin suggests that surface mining techniques may have several advantages over underground methods. For a production level of one million barrels of shale oil per day,...
R. G. Brown
1984, Wetlands (4) 147-158
An urban wetland in the Minneapolis-St. Paul Metropolitan Area was found to retain sediment and nutrient loads in runoff routed through the wetland. Sediment and nutrient loads in runoff were measured during 1982 at the inlet and outlet of the 6.4-bectare urban wetland. Comparison of annual loads entering and...
Brian E. Cole, James E. Cloern
1984, Marine Ecology Progress Series (17) 15-24
Primary productivity was measured monthly at 6 sites within San Francisco Bay, USA, throughout 1980. The 6 sites were chosen to represent a range of estuarine environments with respect to salinity, phytoplankton community composition, turbidity, and water depth. Annual net production over the photic zone ranged from 95 to 150...
S. H. Hurlbert, Cecily C.Y. Chang
1984, Science (224) 299-302
Massive blocks of freshwater ice and frozen sediments protrude from shallow, saline lakes in the Andes of southwestern Bolivia and northeastern Chile. These ice islands range up to 1.5 kilometers long, stand up to 7 meters above the water surface, and may extend out tens of meters and more beneath...
1984, Water-Resources Investigations Report 84-4188-D
Recent investigations suggest that dispersion in aquifers is scale dependent and a function of the heterogeneity of aquifer materials. Theoretical stochastic studies indicate that determining hydraulic-conductivity variability in three dimensions is important in analyzing the dispersion process. Even though field methods are available to approximate hydraulic conductivity in three dimensions,...
John T. Lokemoen, Harold F. Duebbert, David E. Sharp
1984, Journal of Wildlife Management (48) 309-321
The nesting behavior of a concentration of nesting mallards (Anas platyrhynchos) and gadwalls (A. strepera) was studied on a 4.5-ha island in Miller Lake, North Dakota, in 1977. A single 0.59-ha clump of thick shrub contained 225 simultaneously active mallard nests on 10 May. During the peak nesting period, mallard...
Christopher J. Brand
1984, Journal of Wildlife Management (48) 399-406
Waterfowl mortality from avian cholera during July 1979-May 1980 was widespread in the Central and Mississippi flyways, occurring in a wide variety of species and locations from nesting grounds of snow geese (Chen caerulescens) on Hudson Bay south to waterfowl wintering areas on the Texas coast and playa lakes region....