Wave energy saturation on a natural beach of variable slope
A. H. Sallenger Jr., R.A. Holman
1985, Journal of Geophysical Research - Oceans (90) 11939-11944
Time series of flow were measured across the inner surf zone during a storm. These data were used to quantify the dependence of wave height (transformed from measured flow) and velocity on local slope and depth. Similar to previous studies, as incident waves broke and propagated into the surf zone,...
Airfall tuff in the Browns Park Formation, northwestern Colorado and northeastern Utah.
S. J. Luft
1985, Mountain Geologist (22) 110-127
Bedded airfall tuffs, mainly rhyolitic in composition and locally very thick, occur throughout the Browns Park Formation (upper Oligocene to upper Miocene) in northwestern Colorado and northeasternmost Utah. They have received only cursory attention other than for the purpose of radiometric dating. The present writer began study of the tuffs...
Geochemical mass-balance relationships for selected ions in precipitation and stream water, Catoctin Mountains, Maryland
B. G. Katz, O.P. Bricker, M.M. Kennedy
1985, American Journal of Science (285) 951-962
Results of a study of input/output mass balances for major ions based on the chemical composition of precipitation and stream-water, geochemical reactions with different loading rates of hydrogen ion, and watershed processes influencing the chemical character of stream-waters in two small watershed areas are reported with a view to predicting...
Terrestrial vs. marine depositional model—A new assessment of subsurface Lower Pennsylvanian rocks of southwestern Virginia
C. L. Rice
1985, Geology (13) 786-789
A reinterpretation of the origin of subsurface rocks in southwestern Virginia and southeastern Kentucky suggests that, contrary to commonly accepted ideas, the Mississippian-Pennsylvanian Systemic boundary is an unconformity and the Lower Pennsylvanian quartz arenite sequences were deposited in a fluvial environment. Because Pennsylvanian...
Latest Mississippian (Namurian A) nonmarine ostracodes from West Virginia and Virginia
I. G. Sohn
1985, Journal of Paleontology (59) 446-460
Nonmarine ostracodes occur as partly exfoliated carapaces and internal molds at the base of the Bramwell Member of the Bluestone Formation, which represents the uppermost Mississippian (Namurian A), stratigraphic subdivision in West Virginia and Virginia. These specimens are important in that they permit the determination of a variety of adductor-muscle-attachment...
Uranium-series dating of fossil corals from marine sediments of southeastern United States Atlantic Coastal Plain
Barney J. Szabo
1985, Geological Society of America Bulletin (96) 398-406
Extensive low-lying marine deposits border the southeastern United States Atlantic Coastal Plain. Some units are fossiliferous and contain corals as isolated fragments in sediments of a detrital character. These corals are subject to alteration processes such that suites of related samples must be...
Trondhjemite and metamorphosed quartz keratophyre tuff of the Ammonoosuc volcanics (Ordovician), western New Hampshire and adjacent Vermont and Massachusetts
G. W. Leo
1985, Geological Society of America Bulletin (96) 1493-1507
The Ammonoosuc Volcanics and equivalent rocks of Ordovician age are exposed in the Oliverian domes along the Bronson Hill anti-clinorium (BHA) between northern New Hampshire and southern Connecticut. In western New Hampshire and adjacent Vermont and Massachusetts, the Ammonoosuc lithology consists of a...
Digital image transformation and rectification of spacecraft and radar images
S.S.C. Wu
1985, Photogrammetria (40) 119-134
Digital image transformation and rectification can be described in three categories: (1) digital rectification of spacecraft pictures on workable stereoplotters; (2) digital correction of radar image geometry; and (3) digital reconstruction of shaded relief maps and perspective views including stereograms. Digital rectification can make high-oblique pictures workable on stereoplotters that...
Subdivision of thick sedimentary units into layers for simulation of groundwater flow
J. S. Weiss, A. K. Williamson
1985, Groundwater (23) 767-774
Subdividing thick sedimentary units into model layers based solely on stratigraphy can lead to serious violation of groundwater flow modeling restraints and produce erroneous results. Borehole geophysical data can be used to suggest relative permeabilities and delineate model layers that are more likely to have uniform hydraulic properties than layers...
Simulation of ground-water flow in southeastern Oahu, Hawaii
P. R. Eyre
1985, Groundwater (23) 325-330
On the leeward side of southeastern Oahu, Hawaii, near-vertical dikes have intruded the gently dipping and highly permeable lava flows of the Koolau mountain. These dikes bound the study area on the north and west and internally divide it into the Waialae and Wailupe-Hawaii Kai...
A quantitative analysis of the Lassen hydrothermal system, north central California
S. E. Ingebritsen, M.L. Sorey
1985, Water Resources Research (21) 853-868
Our conceptual model of the Lassen system is termed a liquid-dominated hydrothermal system with a parasitic vapor-dominated zone. The essential feature of this model is that steam and steam-heated discharge at relatively high altitudes in Lassen Volcanic National Park (LVNP) and liquid discharge with high chloride concentrations at relatively low...
Maceral distributions in Illinois coals and their paleoenvironmental implications
R.D. Harvey, J.W. Dillon
1985, International Journal of Coal Geology (5) 141-165
For purposes of assessing the maceral distribution of Illinois (U.S.A.) coals analyses were assembled for 326 face channel and drill core samples from 24 coal members of the Pennsylvanian System. The inertinite content of coals from the Missourian and Virgilian Series...
Interpretation with a Donnan-based concept of the influence of simple salt concentration on the apparent binding of divalent ions to the polyelectrolytes polystyrenesulfonate and dextran sulfate
J.A. Marinsky, Robert F. Baldwin, M.M. Reddy
1985, Journal of Physical Chemistry (89) 5303-5307
It has been shown that the apparent enhancement of divalent metal ion binding to polyions such as polystyrenesulfonate (PSS) and dextran sulfate (DS) by decreasing the ionic strength of these mixed counterion systems (M2+, M+, X-, polyion) can be anticipated with the Donnan-based model developed by one of us (J.A.M.)....
Thickness of ice on perennially frozen lakes
C.P. McKay, G.D. Clow, R.A. Wharton Jr., S. W. Squyres
1985, Nature (313) 561-562
The dry valleys of southern Victoria Land, constituting the largest ice-free expanse in the Antarctic, contain numerous lakes whose perennial ice cover is the cause of some unique physical and biological properties 1-3. Although the depth, temperature and salinity of the liquid water varies considerably from lake to lake, the...
NATIONAL WATER INFORMATION SYSTEM OF THE U. S. GEOLOGICAL SURVEY.
Melvin D. Edwards
1985, Conference Paper
National Water Information System (NWIS) has been designed as an interactive, distributed data system. It will integrate the existing, diverse data-processing systems into a common system. It will also provide easier, more flexible use as well as more convenient access and expanded computing, dissemination, and data-analysis capabilities. The NWIS is...
Nitrogen and phosphorus speciation and flux in a large Florida river wetland System
John F. Elder
1985, Water Resources Research (21) 724-732
Hydrologic measurements and analyses of various nitrogen and phosphorus species were made on the Apalachicola River system in northern Florida in 1979 and 1980. Annual outflows of total nitrogen (TN) and total phosphorus (TP) were not substantially different from annual inflows. However, there was significant net import of ammonia and...
Carboniferous U-Pb age of the Sebago batholith, southwestern Maine: Metamorphic and tectonic implications
J.H. Aleinikoff, R. H. Moench, J.B. Lyons
1985, Geological Society of America Bulletin (96) 990-996
Two phases (pink and white granite) of the Sebago batholith of southwestern Maine have been dated by the U-Pb zircon method. Identical upper concordia intercepts of both rocks indicate an intrusive age of 325 ± 3 m.y. for the batholith. The lower intercept...
A general earthquake-observation system (GEOS)
R. D. Borcherdt, Joe B. Fletcher, E.G. Jensen, G.L. Maxwell, J.R. VanSchaack, R.E. Warrick, E. Cranswick, M.J.S. Johnston, R. McClearn
1985, Bulletin of the Seismological Society of America (75) 1783-1825
Microprocessor technology has permitted the development of a General Earthquake-Observation System (GEOS) useful for most seismic applications. Central-processing-unit control via robust software of system functions that are isolated on hardware modules permits field adaptability of the system to a wide variety of active and passive seismic experiments and straightforward modification...
Chesterian davidsoniacean and orthotetacean brachiopods, Ozark region of Arkansas and Oklahoma
T. W. Henry, M. Gordon Jr.
1985, Journal of Paleontology (59) 32-59
Three species of orthotetaceans and one species of davidsoniacean are among the strophomenid brachiopods from Chesterian (Upper Mississippian) rocks of northern Arkansas and northeastern Oklahoma. Type material from the Fayetteville Shale, Orthotetes subglobosus and O. subglobosus var. protensus, is figured for the first time. We regard these species, and O....
Time budgets of northern pintails wintering in the Sacramento Valley, California
M. R. Miller
1985, Wildfowl (36) 53-64
No abstract available....
Comparison of methods for measuring surface area of submersed aquatic macrophytes
Charles L. Brown, Bruce A. Manny
1985, Journal of Freshwater Ecology (3) 61-68
The surface area of submersed macrophytes is often viewed from different perspectives such as substrate for colonization by periphyton, or protective cover for fishes. Consequently, several different methods have been used to measure it. We describe a method for measuring that area with an electronic surface area meter, a device...
Use of den excavations, decoys, and barrier tunnels to capture mink
Thomas C. Eagle, Alan B. Sargeant
1985, Journal of Wildlife Management (49) 40-42
No abstract available. ...
Lake Michigan's capacity to support lake trout (Salvelinus namaycush) and other salmonines: an estimate based on the status of prey populations in the 1970s
Gary W. Eck, Edward H. Brown
1985, Canadian Journal of Fisheries and Aquatic Sciences (42) 449-454
We used a mass balance equation relating total mortality of age II and older alewives (Alosa pseudoharengus) to their removals by predatory fish and other sources of mortality as the basis for estimating that the forage base in Lake Michigan could support an additional 13 000 to 21 000 t of lake trout (Salvelinus...
Mallard recruitment in the agricultural environment of North Dakota
L.M. Cowardin, D.S. Gilmer, Charles W. Shaiffer
1985, Wildlife Monographs (92) 3-37
Recruitment of a mallard (Anas platyrhynchos) population was assessed on a 10,041-km2 study area in central North Dakota during 1977-80. We equipped 338 hens with radio transmitters and monitored them during the breeding season. Two hundred thirty-five of these hens furnished data reported here. Habitat use, nest site selection, fate...
Disturbance of diving ducks by boaters on a migrational staging area
C. E. Korschgen, L. S. George, W. L. Green
1985, Wildlife Society Bulletin (13) 290-296
No abstract available....
